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RESEARCH ARTICLE

Explanation of the failure of a commercial scale application of benomyl to protect pruned apricot trees against Eutypa dieback disease

MV Carter and TV Price

Australian Journal of Experimental Agriculture and Animal Husbandry 17(84) 171 - 173
Published: 1977

Abstract

Application of 0.56 kg benomyl per ha by turbomist sprayer to pruned apricot trees resulted in a slight reduction (P<0.05) in their susceptibility to infection from Eutypa armeniacae ascospores introduced on day 0, but no significant reduction occurred when spores were introduced three or more days later. A majority of the pruned sites yielded less than 3 µg per cm2 of extractable MBC 1 hour after spraying. This finding explains the discrepancy between the high level of protection obtained when the sapwood is saturated by a liberal application of benomyl to each pruned site and the lack of protection in other experiments where the chemical was applied to entire trees by conventional commercial spraying methods.

https://doi.org/10.1071/EA9770171

© CSIRO 1977

Committee on Publication Ethics


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