+ Main Category
Biology: 18066
Agriculture: 7689
Horticulture: 3987
Forestry: 843
Geography: 5126
Environment: 5564
Research: 2417
Society: 448
+ Tell a Friend
Fill out the information below to email a friend a brief note about 'TropHort: Biology, Agriculture and Horticulture'
+ Top 10
+ Directory Statistics
Links: 41718
Categories: 7194
Registered Users: 656
Mailing List Subscribers: 133
+ Pagerank Statistics
+ Join Mailing List
Joining mailing list will entitle you to receive occasional emails informing you of news and updates to the site and any special offers that may be of interest to you.
Research > Chapter 14001
Bookmarks
Creation of constructional documentation of combustion equipment by using CA technologies
Creation of early varieties of cotton, season 1954-55
Creation of fuel-cum-fodder reserves in the plains of Chhattisgarh
Creation of immunity to brucellosis by means of bacterial protein.
Creation of mixed stands as a means of raising forest yields.
Creation of new varieties of winter hard wheat and special points in its seed production.
Creation of self pollinated lines with male sterility in maize.
Creation of shelterbelts in the S. Dobruja.
Creation of stands of trees with high resin yield, for tapping.
Creation of the Animal Products Safety Division in the Ministry of Agriculture, Forestry and Fisheries of Japan
Creation of the socialist sector in Cuba
Creation of winter wheat cultivars by directed change of spring into winter forms.
Creative application of the Micurinist principles in breeding new varieties of fruit trees and shrubs in the central zone of the Soviet Union.
Creative enrichment of materialist biology.
Creative gardens
Creatonotus (interruptus) gangis Linnaeus: a new pest on sugarcane in Andhra Pradesh
Creator of the Bukovina hybrids.
Creator of valuable varieties of vegetable crops.
Creciente importancia de los nematodes en el cultivo del algodonero en el Peru
Credente importancia de los nematodes en al cultivo del algodonero en el Peru
Credit aid for farm enterprises provided by the Federal Government and the 'Lander'. (Sonderausgabe der Zeitschr. f. d. ges. Kreditwesen.)
Credit and agriculture in Chile
Credit and cannery for horticultural products
Credit and social service
Credit capacity of Austrian agriculture
Credit development in Nigerian agriculture
Credit unions in Canada, 1961
Crediting the purchase and sale of agricultural products
Credits for capital investment in agriculture and the security therefore
Creep and stress relaxation in steamed Beech.
Creep feeding of lambs
Creep feeding studies with lambs
Creep feeds for suckling pigs. The effect of pat hull fiber, sugar and pelleting. (Ohio Agric. Exp. Stat. Res. Circular No. 46)
Creep in bending of insulating fiberboard roof deck
Creep in nailed joints
Creep of powdered substances.
Creep of small wood beams under constant bending load
Creep, relaxation and failure of wood
Creep-feeding fall calves
Creeping alfalfa
Creeping alfalfa being developed for Kentucky
Creeping bent, A. stolonifera
Creeping eruption
Creeping eruption, a non-patent, zoonotic helminthiasis in Singapore
Creeping thistle.
Cremona Damiano
Crenosoma vulpis (Dujardin, 1844, Railliet, 1915) u piesakow w woj. gdanskim
Crenosomiasi neti'Erinaeeus turopaeiu. Studio istopatologico
Creosote impregnation of Beech and Oak sleepers at 100 and 130 degrees C. I: Microscopical investigations on changes in structure and moisture content.
Creosote impregnation of Beech and Oak sleepers at 100 degrees and 130 degrees C. II. The effect of impregnation temperature on the mechanical properties of the wood.
Creosote penetration in ties.
Creosote treatment of Scots Pine stumps in Djursland.
Crepidostomum illinoiense (Trematoda)-its excretory system and miracidium
Crescentovitus biloculus gen.nov., sp.nov., a fish cestode (Caryophyllaeidae) from Nagpur, India
Crested wheatgrass
Crested wheatgrass and crested wheatgrass-alfalfa pastures for early-season grazing
Crested wheatgrass complex
Crested wheatgrass is best grass for seed production
Crests of feathers in birds. A study of the problem of parallel formations from the point of view of genetics and developmental physiology
Cretaceous pseudo-rendzinas in the Roztocze region.
Crevni paraziti kod Skolske dece u Kosovsko-Metohijskoj oblasti
Crevni paraziti kod rudara Zajace
Crib-biting and wind-sucking in the Thoroughbred
Cribwork and stone/brushwood dams for timber diversion on mountain rivers.
Cricket Bat Willows: sale and utilization of the Long Ashton trees
Cricket control
Cricket nutrition. 2. An unidentified factor in the nutrition of Acheta domesticus
Criconema celeturn n.sp. (Nematoda: Criconematidae) from African violets in Canada
Criconema kirjanovae n.sp. from soil in the Estonian S.S.R.
Criconema mangiferum n.sp. associated with roots of mango in India
Criconema palmatum n.sp. (Nematoda : Cricone-matidae) from North Devon, England
Criconema serratum n.sp. (Nematoda: Criconematidae), a parasite of peach trees in Almore, North India
Criconema simlaensis n. sp. (Nematoda: Criconematidae) from India
Criconemoides axeste n.sp. associated with roses in commercial greenhouses in New York State
Criconemoides deconincki n.sp. (Nematoda)
Criconemoides nainitalense n.sp. (Nematoda: Criconematidae)
Crimean-Congo hemorrhagic fever
Crimp as a new characteristic of cotton fibres
Crimped oats for dairy cattle
Crimson Clover, a new host for Potato virus X
Crimson Cone raspberry
Crimson Sweet, a new disease-resistant watermelon
Crimson Sweet. A new disease resistant watermelon
Crimson clover
Crimson clover (T. incarnatum L.)
Crimson clover in Alabama
Crimson clover matures earlier
Crimson sweet watermelon
Crimson-a new color of tomato fruits
Crinkle, a new Yirus disease of flax
Crinkle, a new virus disease of Flax
Crinkle-leaf and hot and cold symptoms of Coffee in Kenya
Crinkle-leaf and hot and cold symptoms of coffee in Kenya
Crinkle-leaf of Coffee in Tanganyika
Crinkle-leaf of coffee in Tanganyika
Crinkled leaflets in Pisum and their inheritance
Crinkly leaf psorosis: a virus disease observed on Lemon plants (C. limon) in Sicily
Crinkly-leaf psorosis, a virus disease observed on lemon trees in Sicily
Criodrilus lacuum as a second intermediate host of trematodes of the families Echinostomatidae and Strigeidae.
Crippled Plymouth Bock chickens. A sex-influenced congenital leg anomaly
Crippled Plymouth Rock chickens. A sex-influenced congenital leg anomaly
Crises in the history of life
Crisis in Indian agriculture
Crisis on the coffee market
Crisis or evolution of property rights? (Part VI)
Crisp cabbage lettuces
Crisscross breeding as a method of increasing production in pigs
Crisscross breeding increases production in sheep
Crisscross breeding with Pekin and Khaki Campbell ducks I. Growth and food consumption.
Crisscross breeding with fine-wooled sheep
Crisscross breeding-a reliable method of increasing the production of fine-wooled sheep in commercial flocks
Crisscross two- and three-breed crossing with pigs
Crisscross-breeding with pigs derived from Bulgarian White sows and boars of the Dermantsi Black Spotted breed group.
Cristobalino, a new technique for hastening the germination of certain seeds
Criteria for a classification of agrarian contracts
Criteria for aging pheasant embryos
Criteria for allocating investment resources among various fields of development in underdeveloped economies. (A bibliography and introductory note)
Criteria for analysis of the blood sugar curve after intravenous glucose loading in healthy and dystrophic infants.
Criteria for assessing the brewing quality of barley in plant breeding
Criteria for classifying and allocating agricultural labour reserves in the regions
Criteria for classifying tropical soils by age
Criteria for erosion control on logging roads
Criteria for establishing the validity of in vitro studies with rumen micro-organisms in so-called artificial rumen systems
Criteria for estimating a typical case of retroactive valuation
Criteria for estimation mathematical functions for measuring the trajectories of phenomena change
Criteria for evaluating dairy cooperatives. (FCS Bull. 14.)
Criteria for evaluating stone fruit trees as a source of seeds
Criteria for evaluating wheat varieties from the point of view of their suitability for mechanical harvesting
Criteria for expressing nutritional values of subtropical grasses
Criteria for fixation of water rates and selection of irrigation projects
Criteria for grading resistance of Sugarcane varieties to red rot (Glomerella tuoumanensis)
Criteria for grading resistance of sugarcane varieties to red rot (Glomerella tucumanensis)
Criteria for grading resistance of sugarcane varieties to red rot Glotnerella tucumanensis
Criteria for grading vegetables grown for the modern processing industries
Criteria for interpreting and applying article 34 of law No. 991 of 25th July 1912 in favour of the mountain zone
Criteria for judging the agronomic value of grasslands
Criteria for laboratory evaluation of stored butter.
Criteria for selecting elite trees for Larch breeding.
Criteria for sugar-cane selection in Hawaii
Criteria for the analytical evaluation of the variations in blood sugar of children after intravenous administration of a single dose of glucose
Criteria for the determination of the principal species of aerobic pathogenic actinomycetes
Criteria for the growth of contaminants and mutants in continuous culture
Criteria for the identification of Bacillus anthracis
Criteria for the selection of elite onions suitable for breeding
Criteria for timing the start of harvesting young oil palm plantings
Criteria in distinguishing the pollen of maize, teosinte, and Tripsacum
Criteria of classification of meat from cattle.
Criteria of profitability in relation to volume production
Criteria of the differentiation between silt and silt-like sediments.
Criteria of vitamin C requirement: studies on children.
Criterio de cura parasitologica e imunidade racial na esquistossomose mansoni
Criterion of the species in phytopathogenic bacteria
Criterion validity of the Healthy Eating Self-Monitoring Tool (HEST) for black adolescents
Critical Studies on Insecticides. II. Toxicity of Malathion under different Conditions of Temperature and Humidity
Critical analysis of the methods for determining the mutation frequency after seed treatment with mutagens
Critical assessment of the etiology of enzootic bovine paraplegia in Mysore State with particular refer-ence to cerebro-spinal nematodiasis
Critical assessment of the etiology of enzootic bovine paraplegia in Mysore State with particular reference to cerebrospinal nematodiasis
Critical attitude of a seventeenth century bishop on share tenancy
Critical buckling stresses in wood and ligneous materials in the inelastic region.
Critical comments on the study of wilt of Apricot
Critical comparison of some methods of determining wood moisture content.
Critical concentration of leaf potassium for pineapple in Taiwan
Critical consideration of mobile illumination
Critical considerations concerning the nomenclature of the Argentine wild potatoes. III. Series Cuneoalata
Critical considerations concerning the nomenclature of the Argentine wild potatoes. IV. Series Tuberosa
Critical considerations concerning the nomenclature of the Argentine wild potatoes. V. The series Acaulia
Critical considerations on stall-feeding with grass.
Critical considerations on the development of the starch value theory of Oscar Kellner
Critical considerations on the nomenclature of Argentine wild potatoes. VI. The series Alticola (= Megistacroloba)
Critical days and occurrence of Potato blight in England and Mecklenburg 1950-55
Critical discussion of the efficiency of nitrification.
Critical discussion of the yield, value and application cost of farmyard manures.
Critical evaluation of methods for estimating protein-bound I.
Critical evaluation of present and planned norms of nutrition in hospitals. 1. Studies in a district hospital
Critical evaluation of present and planned norms of nutrition in hospitals. 2. Studies on introducing the planned norms in a Warsaw hospital
Critical evaluation of quality control in dairies.
Critical evaluation of some indexes of fullness of body or nutritional status
Critical evaluation of the action of antimonial korystibin against lungworms in sheep.
Critical evaluation of the method of fat estimation recommended by the SanitaryEpidemiological Board in directives for the examination of meals in canteens
Critical examination of a method of counting Colorado beetles in the field
Critical examination of different methods for the determination of butterfat in the presence of coconut oil.
Critical examination of different methods of estimating butterfat in the presence of coconut fat
Critical examination of methods of analysing hops
Critical examination of quantitative results from biological experiments.
Critical examination of rose nomenclature.
Critical examination of the cultural arrangements in the Apennines with special regard to forage crops
Critical examination of the effect of different treatments of seed potatoes on development and yield
Critical examination of the method of investigating the effect on experimental rickets in rats of changing the anion in calcium salts. 2
Critical examination of the so-called Ascaris toxin from viewpoint of allergy. Preliminary report
Critical examination of yoghurt packaging.
Critical features of good dairy feeding experiments
Critical nutritive observation on High School base ball players.
Critical observations on neo-Darwinism
Critical observations on pruning of fruiting wood of sour cherries
Critical observations on rust fungi on Lettuce in connexion with a severe outbreak of Lettuce rust (Puccinia opizii Bubak)
Critical observations on sex diagnosis by the blood picture in domestic mammals with an example on sheep.
Critical observations on the nomenclature of Argentine wild potatoes. I. The series Commersoniana)
Critical observations on the production and distribution of sterilized milk in Milan
Critical observations on the reductase test.
Critical observations on the taxonomy of Argentine wild potatoes. 1. The series Commersoniana
Critical observations on the taxonomy of Argentine wild potatoes. 3. The series Cuneoalata
Critical period for early embryo mortality in ewes exposed to high ambient temperature
Critical period for weed control in potato in Erzurum province
Critical periods of competition between beans and weeds.
Critical phases of tomato plants
Critical phosphorus levels for lima bean growth
Critical preparation of plant material for autoradiography
Critical remarks on the determination of soil moisture by means of porous blocks.
Critical remarks on the future improvement of Taiwan rice varieties.
Critical remarks on the mortality of Pines in Austria.
Critical remarks on the source SB ('Race 3') of the Potato wart pathogen (S. endobioticum)
Critical remarks on the strain SB (race 3) of potato wart (S. endobioticum)
Critical remarks on varietal selection in sugar-beet cultivation in north and south Germany
Critical review of geographical varieties and hybrids of P. alba and studies on the valley of the Vistula.
Critical review of mycological literature published during 1950-60 in Ecuador
Critical review of mycological research in Madagascar and bibliography for 1946-60
Critical review of the myco-logical investigations and literature in Uruguay during the period 1946-1956
Critical review of the oral iron load test
Critical review of the problem of chemical control of the Colorado beetle.
Critical revision of the techniques of grafting Gramineae with special reference to the methods of embryo transplantation
Critical situation in theoretical genetics.
Critical soil moisture for guttation. A contribution to the ecological value of active water in soil.
Critical soil temperature for tomato plant growth
Critical speeds of moulder spindles.
Critical studies of bifidogenous food mixtures and bifidogenous supplements to foods for infants
Critical studies on rapid methods for the detection of coliform bacteria in standardized market milk.
Critical studies on the methods of testing Flax seed for infection by P. lini and C. linicola
Critical studies regarding the fertilizer requirement of rice
Critical study of electrophoresis of gastric juice
Critical study of evaluation of iron preparations given by mouth by iron absorption curves
Critical study of neoplastic material from domestic mammals, examined during 1917-1959 at the Institute of Veterinary Pathology, Leipzig University
Critical study of some cultural techniques capable of being applied to wheat in the northern half of France. (Experimentation sur cereales 1950-1955.)
Critical study of some important methods for determining carbon in the soil.
Critical study of tests of intestinal absorption by means of triolein-131I and oleic acid-131I.
Critical study of the Kurmies method for the determination of organic matter in soils.
Critical study of the diabetogenic effect of xanthurenic acid in the albino rat
Critical study of the relations between high blood cholesterol and atherosclerosis. Biological and therapeutic effects of an amino acid complex which clears the serum
Critical study of the results of radioactive measurements applied to agronomic problems.
Critical study of the saponification value of coconut oil
Critical study of the saponification values of naturally occurring fats and oils
Critical success factors in the licensed retail industry
Critical survey of medical mycological literature in Bulgaria for the period 1946-1961
Critical survey of medical mycology in Czechoslovakia for the years 1946 to 1956
Critical survey of mycological research and literature for the years 1946-1956 in Holland
Critical survey of mycological research and literature for the years 1946-1956 in Ireland
Critical survey of mycological research and literature in Yugoslavia up to 1957
Critical survey of the present stand of the production of perfect stage of organs of fructification in dermatophytes
Critical test of the efficacy of n-butyl chloride as an anthelmintic in cattle
Critical testing of substances against Fasciola hepatica in sheep
Critical tests of Hetol for treatment of fascioliasis in sheep.
Critical tests of hygromycin B as an ascaricide of swine
Critical tests of piperazine adipate as an equine anthelmintic
Critical tests of piperazine adipate as an equine aothelmintic
Critical tests of thiabendazole as an anthelmintic in the horse
Critical tests of thiabeodazok as an anthelmintic in the horse
Critical tests on the efficacy of Dow ET-57 as an anthelmintic in cattle
Critical tests on the organic phosphate insecticide, Dimethoate, against Gastrophilus spp. in the horse
Critical tests on thiabendazole as an anthelmintic in sheep
Critical tests regarding current residual-spray control against medical insects in Japan. I.
Critical tests with copper sul-fate for experimental moniliasis (crop mycosis) of chickens and turkeys
Critical tests with copper sulfate for experimental moniliasis (crop mycosis) of Chickens and Turkeys
Critical tests with piperazine as an ascaricide in swine
Critical tests with piperazine-carbon d'isulfide complex (Parvex) against parasites of the horse
Critical tests with polymethylene-piperazine (PMP) against parasites of the horse
Critical tests with polymethylenepiperazine (PMP) against parasites of the horse
Critical tests with the organic phosphate insecticide, dimethoate, against Gastrophilus spp. in the horse, with observations on its anthelmintic action
Critical trials with thiabendazole as an anthelmintic in the gastrointestinal tract of cattle and sheep
Criticism of W. Grindel, Occurrence of a systematic error in counting red cells , in this journal, 1959, 37, 98
Criticism of the Jaffe reaction and application of the Lloyd reagent for estimating creatinine in biological fluids
Criticism of the notion of taxonomic selectivity of herbicides.
Criticism of the preceding paper, The fatty acid composition of milk phospholipids
Criticism of the theory of 'family farms' in the USA
Critique de recentes innovations apportees a la classification des Accacoeliidae (Trematoda-Digenca). Observations sur des metacercaires de cette famille
Critique of fluorine dosage in the several methods of combating caries with fluorine
Critique of some vegetational concepts applied to forests of northwestern Alberta
Critique on apomixis in sugarcane
Crketomys gambianus (Waterhouse). Hote experimental de Schistosoma mansoni
Croft lily response to calcium and phosphate fertilization
Crofting in the North of Scotland 1958-59
Crofting in the North of Scotland 1959-60
Crofting in the north of Scotland 1958/59
Crofts and sheepstock clubs in North Scotland
Croissance des ovotestis puis des ovaires chez un nematode libre hermaphrodite: Caenorhabditis eiegans Maupas 1900
Croissance et developpement des bovins charollais. Growth and development of Charollais cattle. Nevers: Syndicat de Controle de Performances des Elevages Nivernais
Cromosomas de Onchocerca volvulus
Cronartium asclepiadeum on Pinus lahepensis on the Istrian peninsula.
Cronartium fusiform
Cronartium quercus-a chronic disease of Scots Pine forests of the Amur region.
Crook and abnormal branching in Finnish Pine.
Crook root of Watercress. I. Field assessment of the disease and the role of calcium bicarbonate
Crook root of Watercress. II. The control of the disease with zinc-fritted glass and the mechanism of its action
Crook root of Watercress. III. The causal sorganism, Spon-gospora subterranea (Walk.) Lagerh. f. sp. nasturtii f. sp. nov
Crook root of watercress. I. Field assessment of the disease and the role of calcium bicarbonate
Crook rot of watercress. II. The control of the disease with zinc-fritted glass and the mechanism of its action
Crooked calf disease produced experimentally
Crooked lumber
Crooked neck dwarf in the turkey
Crooked tail, an inherited defect in swine
Crooked wings in a Chinese gander
Crooked-necked spermatozoa in relation to low fertility in the artificial insemination of fowl
Crookneck in pineapples is not hard to control
Crop Costs 1959
Crop Diseases Calendar
Crop Intensity and Income Stability
Crop Production in a Weed-free Environment, being Symposium of the British Weed Control Council No. 2. Blackwell Scientific Publications, Oxford
Crop Protection Products Approval Scheme, Approved List 1957
Crop Protection Products Approval Scheme, Approved List 1959-60
Crop Protection Products Approval Scheme. Approved List 1957
Crop Protection Products Approval Scheme. Approved List 1958
Crop Protection Products Approval Scheme. Approved List 1959-60
Crop Research Division, Handbook 1961
Crop Research Division. Handbook 1961
Crop Research Division. Lucerne
Crop Science
Crop Spraying Simplified
Crop adaptation and distribution
Crop adjustments to raise agricultural production
Crop agronomy and improvement in Cyrenaica
Crop agronomy and improvement in Cyrenaica. (Rep. 1111 FAO/ETAP.)
Crop and Animal Husbandry Division
Crop and fertilizer recommendations for Mississippi
Crop and livestock insurance in Brazil
Crop and livestock research for Delta area. Annual Report, Delta Branch Experiment Station
Crop and livestock research for Delta area. Annual report, Delta Branch Experiment Station
Crop and pasture management
Crop breeding for western Canadian agriculture
Crop breeding for western agriculture
Crop conditioning experiments : 2. Effects on crop quality
Crop costs 1958
Crop damage by nematodes in Israel
Crop damage can take the profit out of weed spraying
Crop damage: a hazard of herbicidal use
Crop defoliation
Crop desiccation trials
Crop deterioration
Crop disease control
Crop diseases calendar
Crop dryer for experimental plant materials or grain
Crop ecology and plant breeding for disease resistance
Crop establishment by chemical destruction of turf
Crop establishment in non-arable serrated tussock country
Crop experiments on the effect of 2-chloro-6-(tri-chloromethyl) pyridine for the control of nitrification of ammonia & urea fertilizers
Crop figures as a basis for estimating apple production
Crop growth and availability of moisture
Crop husbandry
Crop husbandry. Grassland
Crop husbandry. Rice
Crop improvement and protection sponsored by the State in Scotland
Crop improvement and seed distribution of upland food crops in Taiwan
Crop improvement in chillies in Madras
Crop improvement in mango - a review
Crop improvement in other lands
Crop improvements and classification in brinjal (Solanum melongena Linn)
Crop insurance as a measure of agricultural support: national and international action
Crop load affects incidence of bitter pit and calcium contents in 'Gamhong' apple fruit
Crop logging vs. 8-10 and soil analysis
Crop logging. What do we know about it?
Crop loss by insect pests in Uganda
Crop loss by insect pests in Uganda.
Crop loss studies in Manitoba
Crop pests and diseases of British Guiana
Crop physiology
Crop physiology: sorghum
Crop planting tables
Crop plants of Ethiopia.
Crop potential of mar-galitic soil in the Kafue Flats N. Rhodesia
Crop potential of margalitic soil in the Kafue fiats
Crop production
Crop production and environment
Crop production and field residues of some vegetables.
Crop production and plant breeding
Crop production in a weed-free environment
Crop production in a weed-free environment. Symposium 2, British Weed Control Council
Crop production in chemically killed turf
Crop production in soil fumigated with Crag Mylone as affected by rates, application methods and planting dates
Crop production in soil fumigated with Crag Mylone as affected by rates, application methods, and planting dates
Crop production in the South
Crop production in the district of Evora
Crop production levels and fertilizer use
Crop production on small holdings
Crop production practices and costs by size of farm, Delta area, Mississippi, 1957/58. (Agr. Econ. Rep. 21)
Crop production trials and new crops
Crop production trials on stripmined floor soil show promise
Crop production. Salisbury Experiment Station. Maize
Crop protection
Crop protection
Crop protection and pest control exhibition
Crop protection by seed treatment. 1. Seed dressings for cotton
Crop protection by seed treatment. 2. Seed dressing for sorghum
Crop protection for coffee, cacao and other tropical perennial plants
Crop protection in Southern Britain, 27-28 February 2007, Peterborough, UK
Crop protection in the tropics
Crop protection notes
Crop protection products approval scheme. Approved list 1957
Crop protection products approval scheme. Approved list 1959-60
Crop protection through the ages
Crop protection weeds
Crop protection. Studies on late blight of tomatoes
Crop protection. Weeds
Crop residue placement in soil and its effect upon growth of corn
Crop residue replacement in soil and its effect upon growth of corn
Crop response to NPK fertilizers varying in granule size and water solubility of the phosphorus
Crop response to ammoniated superphosphates and dicalcium phosphate, as affected by granule size, water solubility, and time of reaction with soil
Crop response to boronated fused tricalciom phosphates
Crop response to calcium polyphosphate glass and some of its degradation products
Crop response to commercial fertilizers in relation to granulation and water solubility of the phosphorus
Crop response to deep tillage with lime and fertilizer
Crop response to different soil fertility levels in a 5 by 5 by 5 by 2 factorial experiment : I. Corn
Crop response to different soil fertility levels in a 5 by 5 by 5 by 2 factorial experiment : II. Peanuts
Crop response to fertilizers varying in solubility of the phosphorus, as affected by rate, placement and seasonal environment
Crop response to irrigation in the Northeast
Crop response to lime & fertilizer superimposed oa different tillage treatments for a virgin grey wooded soil
Crop response to lime and fertilizer superimposed on different tillage treatments for a virgin grey wooded soil
Crop response to metaphosphate fertilizers
Crop response to micro-nutrients under Indian conditions
Crop response to phosphate fertilizers as influenced by level of phosphorus solubility and by time of placement prior to planting
Crop response to phosphorus & potassium in potassium phosphates varying widely in particle size
Crop response to potash under Indian conditions
Crop response to zinc fertilization as influenced by lime and phosphorus applications
Crop responses to added fertilizers in cultivators' fields. A technique for finding out manurial requirements of Bihar soils
Crop responses to added fertilizers in cultivators' fields. A technique for finding out manurial requirements of Bihar soils. A study of the nitrogen response growth curves for clay, loam and sandy-loam soils of the Shahabad district
Crop responses to irrigation in the Northeast
Crop rotation and associated tillage practices for controlling annual weeds in flax and reducing the weed seed population of the soil
Crop rotation and biological soil sterilization
Crop rotation and fallowing in relation to Tobacco disease control
Crop rotation and fallowing in relation to tobacco disease control
Crop rotation and foot rot
Crop rotation and the control of root knot on muck-grown vegetables
Crop rotation as a possible method of controlling gall nematodes (Meloidogyne spp.).
Crop rotation as the most important means of controlling wild oat
Crop rotation as the most important measure in the control of wild oats.
Crop rotation checks nematode causing carrot root knot
Crop rotation conditions in Baden-Wurttemberg
Crop rotation effects on the soybean cyst nematode population and soybean yields
Crop rotation experiments in the Ohio Valley, 1937-1952
Crop rotation experiments on foot-rot infected soil
Crop rotation in Japanese arable farming
Crop rotation in alkali (szik)-soil reclamation.
Crop rotation on chernozems of the Transylvanian steppe (Romania).
Crop rotation seen by farm economists
Crop rotation systems and market orientation considered as factors shaping the agrarian landscape in Bavaria. (Arbeiten aus dem Georgr. Inst. der Univ. des Saarlandes. 5.)
Crop rotation trials at the Experimental Farm at Fez (Morocco)
Crop rotation-ley-weed.
Crop rotations
Crop rotations and common rootrot in Wheat
Crop rotations and common rootrot in wheat
Crop rotations and herbicides for weed control in northerly parkland and wooded regions
Crop rotations and herbicides for weed control in southern dry-land and irrigated areas
Crop rotations for irrigated cotton.
Crop rotations in the savanna regions of the northern cotton zone (of the Congo)
Crop sharing in India
Crop situations where cultivations for weed control may be eliminated by use of herbicides. A. Agriculture
Crop situations where cultivations for weed control may be eliminated by use of herbicides. B. Horticulture
Crop situations where cultivations for weed control may be eliminated by use of herbicides. C. Forestry
Crop size in relation to breakdown in McIntosh
Crop spacing and management under weed-free conditions
Crop species and weeds encountered in seed production crops of clover and grass: their assessment during field inspection for seed certification
Crop spraying
Crop spraying simplified
Crop spraying: some economic aspects
Crop studies
Crop succession and rotation in the organization of field husbandry
Crop surveys in Bihar. VI. Studies in the estimation of acre-yield of sugarcane (1954-55 and 1955-56)
Crop tolerance and weed susceptibility of DAC-893, a new pre-emergence herbicide
Crop value and disease
Crop value of comfrey, (Symphytum peregrinum)
Crop varieties
Crop varieties for different seasons and regions
Crop varieties recommended for Oklahoma, 1957
Crop variety improvement and seed multiplication work in Taiwan
Crop variety testing
Crop variety testing
Crop water requirement of guava (Psidium guajava L.) cv. KG/KAJI under drip irrigation and plastic mulch
Crop water requirements of cotton
Crop weather relationship in rainfed sorghum
Crop yield and the number of coffee trees in the planting hole
Crop yield as a function of soil moisture supply
Crop yields and economic aspects of three and four course rotation in Malwa
Crop yields are affected by tillage practices
Crop yields in Lower Saxony and their evaluation under the land taxation law
Crop yields in experiments and on farms
Crop, weed and soil aspects of simazine, atrazine and other herbicides in greenhouse and field tests
Crop-fattened steers show good profit
Crop-livestock interaction in the savannas of Nigeria: nature and determinants of farmer decision to use manure for soil fertility maintenance
Crop-logging of sugar cane: the standard nitrogen index and the normal nitrogen index
Crop-plant density and efficiency of selection.
Crop-scientific studies on the yield-formation and the yield-forecast of lowland rice. 36. On forecast of the number of spikelets per panicle.
Crop-scientific studies on white-core kernel of rice. 1. The relation between the occurrence of white-core kernels and the character of the ear. 3. The effect of restricting the number of tillers and caryopses to the occurrence of white-core kernels of rice.
Crop-scientific studies on white-core kernel of rice. 4. On the occurrence of white-core kernels under different fertility conditions. 5. On the chemical composition of rice grain and its peculiarities in white-cor e kernels.
Crop-scientific studies on white-core kernels of rice. 6. Kinds of white-core kernels of rice and their characteristics.
Crop-scientific studies on white-core kernels of rice. 7. The relationship between the ripening grade of a hull rice and the occurrence of a white-core kernel of rice.
Crop-tree release increases growth of black birch (Betula lenta L.) in Southern New England
Crop-weed ecology in relation to weed control research
Crop-weed ecology in weed research
CropMonitor - informing current and future crop health decisions
Cropping experiments to test the efficiency of nutrient translocation by cultivated Mushrooms
Cropping experiments to test the efficiency of nutrient translocation by cultivated mushrooms
Cropping for fodder conservation and pasture production in the wool-growing areas of Western Queensland
Cropping influence on micro-bial-chemical characteristics of Texas Blackland soils
Cropping of strawberry varieties in Poland
Cropping results in various types of glasshouse
Cropping results obtained with early tomatoes in heated glasshouses in the Berkel district of Holland
Cropping systems
Cropping systems for nematode control and tobacco production
Cropping without cultivation at Marton
Cropping without cultivation at Rukuhia
Cropping, cultivation and herbicides to eliminate Russian knapweed and prevent re-infestation
Cropping, cultivation and herbicides to eliminate Russian knapweed and prevent rein-festation
Cropping, cultivation and herbicides to eliminate leafy spurge and prevent reinfestation
Cropping, cultivation, and herbicides to eliminate Russian knapweed and prevent reinfestation
Cropping, cultivation, and herbicides to eliminate leafy spurge and prevent re-infestation
Cropping-management factor evaluations for a universal soil-loss equation
Cropplng-managcment factor evaluations for a universal soil-loss equation
Croprotation effects on the soybean cyst nematode population and soybean yields
Crops & Soils
Crops and pastures for Northern Australia
Crops and plant breeding
Crops and plant breeding
Crops and plant breeding
Crops and soil management for the Wabowden area of northern Manitoba
Crops and wealth in Uganda. (East African Studies 12.)
Crops and weather in India
Crops for facial eczema control
Crops for silage making
Cross 4-29-an improved strain of linseed for Vidarbha
Cross 4-29. An improved strain of linseed for Vidarbha
Cross absorption studies performed with Schistosoma mansoni and Trichinella spiralis antigens in sera from patients with trichinosis
Cross breeding in wheat, Triticum aestivum L. II. Hybrid seed set on a cytoplasmic male-sterile winter wheat composite subjected to cross-pollination
Cross breeding swine for pork production in Taiwan
Cross breeding with yak
Cross cutting roundwood so as to maximize usable volume.
Cross immunity between canine distemper and rinderpest.
Cross immunity in dog distemper and rinderpest.
Cross immunity testswith dog distemper and rinderpest viruses in rabbits
Cross immunization of guinea-pigs with products of Brucellae abortus, melitensis and suis
Cross infection among animals challenged with Bacillus anthracis
Cross infections among brucella infected guinea pigs
Cross inoculation studies with some rhizobia of the cowpea group
Cross pollination in the hazel nut variety Tonda gentile delle Langhe. Part II
Cross pollination of self pollinating plants, raised from irradiated seed.
Cross protection and interference with some stone-fruit viruses
Cross protection between two strains of Corn stunt virus in an insect vector
Cross protection between two strains of corn stunt virus in an insect vector
Cross protection of three strains of the aster yellows vims in the leafhopper and in the plant (Abstract.)
Cross protection tests with related and non-related viruses in Nicandra physaloides (L.) Gaertn
Cross protection with two rust fungi
Cross reactions between C. albicans and M. tuberculosis in the haemagglutination test
Cross reactivation of deuteron bombarded T1 bacteriophage
Cross resistance in Seyin-selected house flies and a summary of resistance among the carbamate insecticides
Cross resistance in a diazinon-resistant strain of Musca domestica (L.)
Cross resistance to acaricides in European red mite
Cross section of contemporary wood preservation problems
Cross sectional study reveals a high percentage of asymptomatic Plasmodium vivax infection in the Amazon Rio Negro area, Brazil
Cross transmission of nematodes of domestic animals. I. Experimental infection of swine with Trichostrongylus colubriformis
Cross transmission of nematodes of domestic animals. II. Infection of a calf with Hyostrongylus rubidus, the red stomach worm of swine
Cross transmission of nematodes of domestic animals. III. Preliminary observations on the infection of goats and rabbits with Hyostrongylus rubidus
Cross transmission of nematodes of domesticanimals. III. Preliminary observations on theinfection of goats and rabbits with Hyostrongylus rubidus
Cross- and self-fertilization in birdsfoot trefoil
Cross-breeding Swiss Brown with Jersey cattle.
Cross-breeding as a measure to increase butterfat content of milk.
Cross-breeding cattle in the Altai.
Cross-breeding experiment in beef production
Cross-breeding experiments with the Jersey and Bed Sindhi cattle
Cross-breeding experiments with the Jersey and Red Sindhi cattle
Cross-breeding in wheat, Triticum aestivum, I. Frequency of the pollen-restoring character in hybrid wheats having Aegilops ovata cytoplasm
Cross-breeding of Australorbis glabratus and Biomphalaria boissyi
Cross-breeding of Red Spotted cattle with Kholmogor bulls.
Cross-breeding with Ayrshire cattle in the development of a new highland breed.
Cross-breeding with Pol-warth rams in Malla Danpur (Almora) U.P
Cross-breeding with cattle in the Madras state
Cross-compatibility of annual and perennial ryegrasses with tall fescue
Cross-cutting treelength logs with butt rot at floating enterprises.
Cross-dating of Anglo-Saxon timbers at Old Windsor and Southampton
Cross-fostering as a means to study transplacental toxicosis of Ipomoea carnea in rats
Cross-hoeing
Cross-immunity between Brucella melitensis and Mycobacterium tuberculosis. Intracellular behavior of Brucella melitensis in monocytes from vaccinated animals
Cross-incompatibility in maize
Cross-inoculation group relationships of Galega officinalis
Cross-inoculation of Tomato and Corn with Gibberella
Cross-inoculation studies with four species of anthracnose fungi
Cross-inoculation studies with the Tipula iridescent virus
Cross-inoculation with nodule bacteria of tropical legumes
Cross-linking of deoxyribonucleic acid to protein following ultra-violet irradiation of different cells
Cross-neutralization studies with group A arthropod-borneviruses
Cross-neutralization tests with swine enterovirus strain S 180/4, and Teschen, Talfan, and swine polio-encephalomyelitis viruses
Cross-over and chromatid interference in P. anserina (Ces.) Rehm
Cross-pollinated blackcurrants give bigger fruits and yields
Cross-pollination of cucumber varieties in relation to isolation and viability of pollen.
Cross-pollination of male-sterile winter wheat having Aegilops caudata and Aegilops ovata cytoplasm
Cross-pollination of the hazel nut variety Tonda gentile delle Langhe. 1st Contribution.
Cross-protection ('Premunity') tests with two strains of Potato virus Y in Tomatoes
Cross-protection Tests with 3 Strains of the Aster Yellows Virus in Host Plants and in the Aster Leaf hopper
Cross-protection between Venezuelan equine encephalo-myelitis and Eastern equine encephalo-myelitis virus
Cross-protection between strains of tomato aspermy virus and Cucumber mosaic virus
Cross-protection experiments with Sugarcane mosaic virus
Cross-protection experiments with sugarcane mosaic virus (SMV)
Cross-protection studies with yellow-vein and certain other viruses of Citrus
Cross-protection studies with yellow-vein and certain other viruses of citrus
Cross-protection tests confirm the presence of etch virus on Tobacco in Puerto Rico
Cross-protection tests with 3 strains of the Aster yellows virus in host plants and in the Aster leafhopper
Cross-resistance and prevention of experimental heart disorders produced by a vitamin D derivative
Cross-resistance characteristics of a malathion-tolerant strain developed in Aedes aegypti
Cross-resistance in insecticide-resistant strains of the German cockroach, Blattella germanica (L.)
Cross-resistance patterns of mutants resistant to Streptomyces phages
Cross-sectional study on relationships between housework and cancer among adult women in urban Shanghai
Cross-sector relationships between the corn feed grains and livestock and poultry economies
Cross-sectoral policy linkages and environmental accounting in forestry
Cross-shelf gradients in phytoplankton community structure, nutrient utilization, and growth rate in the coastal Gulf of Alaska
Cross-tolerances of dieldrin-resistant files and mosquitos to various cyolodlene Insecticides
Cross-transmission studies with three cytoplasmic polyhedrosis viruses
Cross-validation of production and consumption data of fruits and vegetables
Crossability among Mexican tetra-ploid Solanum species
Crossability between Cartea species
Crossability in diploid Solanums
Crossability in direct and reciprocal crosses between Hibiscus esculentus and H. manihot, and the morphology and meiosis in the F1.
Crossability in direct and reciprocal crosses between an amphidiploid obtained by breeding and its parents, and the morphology and meiosis in the resultant hybrids.
Crossability in some Triticum species
Crossability of Solanum tuberosum haploids, diploid species and their hybrids with S. stoloniferum
Crossability of tetraploid wheat species with cultivated rye
Crossability of the common tomato with wild species at the diploid and tetraploid level.
Crossability of wheat with Elymus spp. and the characters of the F1 hybrids.
Crossability relationships of certain diploid Mexican Solanum species
Crossability studies in search of new characters
Crossbred and purebred dams for the production of slaughter calves
Crossbred beef
Crossbred beef production
Crossbred dwarfs in beef cattle
Crossbred lamb production from castfor-age Blackface ewes
Crossbred poultry for battery rearing
Crossbreds as layers
Crossbreds of the second generation of local sheep in Sredna Gora and rams from the farm of the Zootechnical Faculty
Crossbreeding and organisation of mass fattening of pigs at collective farms in Yaroslavl Province
Crossbreeding as a method of obtaining high class horses for sport
Crossbreeding beef cattle
Crossbreeding experiment between Japanese Black and Holstein cattle.
Crossbreeding experiments in Hungarian cattle breeding.
Crossbreeding experiments with Landrace and Large White pigs
Crossbreeding experiments with cattle on the Bosch estates
Crossbreeding experiments with sheep
Crossbreeding experiments with some species of the Tetranychus urticae group
Crossbreeding experiments with, cattle on the Bosch estates. Investigations on the heritability of the more important production characters. Pt. II
Crossbreeding for broiler production.
Crossbreeding for milk production
Crossbreeding for milk production and heat tolerance in the tropics
Crossbreeding for the Texas Gulf Coast
Crossbreeding in sheep
Crossbreeding in turkeys. II. Summary of studies on hatchability, growth, and body characteristics
Crossbreeding local cattle with Hereford cattle
Crossbreeding of dairy cattle
Crossbreeding studies with seven species of Trogoderma
Crossbreeding studies with two closely related species of Liriomyza (Diptera : Agromyzidae)
Crossbreeding swine for pork production in Taiwan
Crossbreeding the Swamp with the Murrah buffalo
Crossbreeding the swamp with the Murrah buffalo
Crossbreeding turkeys may be rule in future development of industry
Crossbreeding turkeys. 1. Effect of mating system on reproductive performance
Crossbreeding turkeys. 2. Effect of mating system on body weight and conformation
Crossbreeding with Hungarian White sows and Dutch Landrace and Swedish Landrace boars, and also Large White boars with special reference to bacon quality
Crossbreeding with Large White and Murom pigs
Crossbreeding with Large White, Landrace, Estonian Bacon and North Caucasus pigs.
Crossbreeding with Large White, Ukrainian White Steppe and Estonian Bacon pigs.
Crossbreeding with cattle
Crossbreeding with dairy cattle
Crossbreeding with fowls in state and collective farm practice.
Crossbreeding with horses.
Crossbreeding with pigs
Crossbreeding with sheep in Kazakhstan on the example of State Farm No. 500
Crossbreeding with sheep in the distriet of Kamo
Crossbreeding with warm-blood and cold-blood horses
Crossbreeding, purebreeding and pigling production at birth and weaning. (Preliminary note.).
Crossbreeding-an effective method of increasing the butterfat content of cow's milk.
Crossed tuberculin, microbial and trichophytin allergy. Its immunological and therapeutic aspects
Crosses achieved with some of the more interesting Spanish and exotic Pines.
Crosses between B. verrucosa and B. pubescens
Crosses between B. verrucosa and B. pubescens.
Crosses between various X-ray induced recessive mutants in wheat
Crosses of Awassi ewes with East Friesian rams.
Crosses of B. vulgaris with species of the section Patellares of the genus Beta
Crosses of barley with Elymus.
Crosses of sugar cane at the Centre of Agronomic Investigations
Crosses of varieties with lines as a method of raising productiveness in sugar beet.
Crosses with different forms of Oe. odorata by early and late pollination. I
Crosses within the genus Festuca and between the genera Festuca and Lolium. B. Crosses of diploid and tetraploid F. pratensis with F. arundinacea and F. rubra and of diploid and tetraploid F. pratensis, F. arundinacea and F. rubra with diploid and tetraploid L. perenne and L. multiflorum
Crosses within the section Leuce and a notable hybrid between Leuce and Aigeiros
Crosses within the section Leuce and a notable hybrid between Leuce and Aigeiros.
Crossimmunity between dog distemper and rinderpest
Crossing (Conclusion)
Crossing Black Pied Swedish with Jersey cattle.
Crossing East Friesian with Kostroma cattle
Crossing Hungarian White sows with Swedish Large White boars with special reference to the quality of the bacon
Crossing Jersey bulls with Black Pied Lowland and with Spotted Mountain cattle.
Crossing Jersey bulls with Black Pied and Spotted Mountain cattle.
Crossing Jersey with Black Pied cattle
Crossing Kalmyk cows with Santa Gertrudis bulls
Crossing Landrace boars with Breitov and Large White sows.
Crossing Landrace with Breitov and Large White pigs.
Crossing Large White, Ukrainian White Steppe and Mirgorod pigs.
Crossing Oparina ewes with Romney Marsh rams
Crossing Pietrain and Large White pigs
Crossing Pramenkas withMerinos in the People's Republic of Bosniaand Herzegovina as a preliminary before masscrossing with Merinos
Crossing Red Spotted cows with Kholmogor bulls
Crossing Red Steppe cattle
Crossing Simmental and Pinzgau cattle with a Kostroma bull
Crossing Swedish Landrace with sows of breeds of the lard type
Crossing and developing inbred lines in pig breeding in the Ukraine
Crossing as a method of increasing the butter fat content of milk
Crossing between inbred lines.
Crossing characteristics of the parental forms of maize hybrids differing in earliness of maturity in breeding for northern districts.
Crossing coarse-wooled ewes with Romney Marsh rams
Crossing cows with a high milk yield with Jerseys at the State Farm Kommunarka.
Crossing crossbred ewes with finewooled rams
Crossing dairy breeds improves cattle performance
Crossing designs for selection breeding in forest trees
Crossing domestic and wild geese
Crossing experiments concerning the occurrence of hybrids of Betula verrucosa X B. pubescens.
Crossing experiments to elucidate the species problem in the T. urticae-telarius complex
Crossing experiments with Citrullus vulgaris Schrad. and Citrullus colocynthis Schrad
Crossing experiments with Portuguese Merino ewes and rams of meat breeds.
Crossing experiments with chlorophyll mutants of einkorn wheat
Crossing experiments with horned goats as a contribution to the problem of intersexuality and infertility in male goats
Crossing experiments with poppy varieties
Crossing experiments with the genus Abies.
Crossing fat-rumped ewes with Lincoln rams
Crossing geographically distant forms in breeding winter wheats.
Crossing grade Simmental cattle with Herefords.
Crossing in animal breeding. (Problems of heterosis. )
Crossing indigenous sheep with fine-wooled rams in the Kulyab districts of Tadzhikistan
Crossing local cows with Kostroma bulls
Crossing methods and evaluation of hybrid millet progeny.
Crossing methods in paper electrophoresis
Crossing of two allopatric Populations of Culex fatigans Wiedemann
Crossing over and nuclear passing in Neurospora crassa
Crossing over in fungi, bacteria, bacteriophage and higher organisms
Crossing over in maize in the presence of the transposable factors activator and modulator
Crossing over studies with Drosophila and maize
Crossing patterns for the selective breeding of forest trees.
Crossing poppies to obtain higher morphine contents in dry poppy heads
Crossing relationship between C. pseudo-olitorius Islam and Zaid and C. capsularis L
Crossing relationships in the genus Carica
Crossing relationships in the genus Corchorus
Crossing self pollinators without emasculating the maternal flowers.
Crossing self-sterile mutants of Sordaria fimicola
Crossing soft winter wheats with branched spring wheats pertaining to Triticum turgidum.
Crossing the coconut
Crossing the common and scarlet bean (Phaseolus spp.) with Vigna species
Crossing the lupin by pollinating unemasculated flowers.
Crossing with American Jerseys. First results of a trial in Sachsen
Crossing with three breeds to replace coarse-wooled sheep by semifine-wooled.
Crossing zebu-like cattle with East Friesians as a means of improving hides
Crossing zebu-type with improved cattle breeds.
Crossing-over in mice heterozygous for t-alleles
Crossings between Hereford and Swedish Polled have produced good results
Crossover frequency studies with biochemical mutants of Chlamydomonas
Crossover-sport: between anything goes and pedagogical significance
Crosswise loading of long-type watermelons
Crotalaria anagyroides
Crotalaria juncea, a green manure for the medium and warm climatic zones in Colombia.
Crotalaria quinquefolia, a promising green manure for the rice culture in Surinam
Crotalaria species for the central zone
Crotalaria species for the central zone (of Guatemala)
Crotalaria spectabilis Roth.-a new green manuring crop for northern India
Crotalaria spectabilis toxicity in chickens
Crotalaria spectabilis toxicity inchickens
Crotalaria spectabilis toxicity studies in turkeys
Crotalaria spectabilis-induced cirrhosis in turkeys
Crotalaria spp. for restoring soil fertility
Crotalaria spp. for the central zone (of Guatemala)
Crotalaria. Friend turned foe
Crotch influence on strength and breaking point of apple tree branches
Crotolaria spectabilis Roth.-a new green manuring crop for northern India
Crotons are so attractive! Bat how can they be prevented from shedding their leaves?
Crown and root rots of alfalfa
Crown and stem development of Douglas-Fir
Crown blight of Cantaloupe
Crown blight of cantaloupe
Crown classification of natural forest trees
Crown competition-a measure of density
Crown corks with or without aluminium foil ?
Crown cover as indicator of structural development of riparian areas restoration in the Mid-Paranapanema Valley, Brazil
Crown deterioration and tree diameter relationships in White Birch stands
Crown development and its effect on stem growth of six Douglas-Firs
Crown development: an index of stand density
Crown diameters: their relation to bole diameter in tropical forest trees
Crown die-back and debility in Corsican Pine (P. nigra var. calabrica) in Britain
Crown dimension, initial diameter and diameter growth in a juvenile stand of Douglas Fir
Crown disease of Oil Palm. Principles for obtaining resistant lines
Crown disease of oil palms. Requisites for producing resistant lines
Crown formation and pruning methods in fruit growing
Crown formation in sour cherries
Crown gall and leafy gall
Crown gall chemotherapy with Terramycin
Crown gall chemotherapy with terramycin
Crown gall control
Crown gall disease in Israel
Crown gall of roses
Crown gall oi plants
Crown gall on rhododendron
Crown grafting. Comparison of two methods
Crown measurement by a photogrammetric rectification.
Crown mite damage on spinach
Crown necrosis of Bells of Ireland
Crown release of young Sugar Maple
Crown rot disease of Iris