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According to Anstett (1961), 198 kg N, 66 kg P2O5, 295 kg K2O, 21 kg MgO, 186 kg CaO, for crop yielding 37 t/ha (corymbs). Averaged from other authors, 175 kg N, 60 kg P2O5, 200 kg K2O, 25 kg MgO, 115 kg CaO, 45 kg S per ha. Plant analysis data
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Google PR: Leaf Blight (fungus - Alternaria dauci) Infection occurs mostly on older leaves, but younger leaves may also become infected. Leaf blight first appears as indefinite brown to black areas with pale yellow centers. Infected leaves shrivel when infection is heavy [Photo #1].
Details Hits: 0 Votes: 0 Ratings: Reviews: Google PR: The American Phytopathological Society is an international scientific organization that promotes the study and management of plant diseases through publications, meetings, and APSnet.
Details Hits: 0 Votes: 0 Ratings: Reviews: Google PR: Biology Powdery mildew is a fungal disease which affects all aboveground portions of grapes. Leaves develop characteristic white to grayish patches of fungus on the underside. Both surfaces of shaded leaves may be affected.
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