Efficacy of certain fungicides against potato late blight and assessment of loss due to the disease
Autor: | R. S. Vasudeva, R. N. Azad |
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Rok vydání: | 1952 |
Předmět: | |
Zdroj: | American Potato Journal. 29:61-71 |
ISSN: | 1874-9380 0003-0589 |
DOI: | 10.1007/bf02885331 |
Popis: | Burgundy Mixture and Perenox have been shown to be most effective in the control of Late Blight of potatoes and the increase in out-turn effected by these was 139.5 and 71.4 per cent, respectively. Dithane almost completely failed to effect any appreciable control of the disease under conditions prevailing in the higher hills of Simla region. No absolute correlation between the ultimate loss of leaf area destroyed by the disease and out-turn have been observed. A general indication has, however, been obtained that the yield decreases with increase in the loss of leaf area and vice versa. It has further been shown that the rate at which the disease progresses and the total period during which the foliage remains green as a result of protection provided by the fungicides against the disease, greatly influence the yield. |
Databáze: | OpenAIRE |
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