Abstract
EPIDEMICS of apple scab (Venturia inaequalis) originate from ascospores discharged from perithecia present on over-wintered leaves on the ground. Hutton1 has shown that post-harvest pre-leaf-fall applications of organomercurial compounds greatly improved the level of disease control in that they suppressed perithecial formation and hence reduced the amount of ascospore inoculum in the following spring.
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References
Hutton, K. E., Agric. Gaz. N.S.W., 68, 535 (1957).
Oland, K., Nature, 198, 1282 (1963).
Ross, R. G., Canad. J. Bot., 39, 731 (1961).
Hutton, K. E., and Burchill, R. T. (in preparation).
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BURCHILL, R., HUTTON, K., CROSSE, J. et al. Inhibition of the Perfect Stage of Venturia inaequalis (Cooke) Wint., by Urea. Nature 205, 520–521 (1965). https://doi.org/10.1038/205520b0
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DOI: https://doi.org/10.1038/205520b0
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