Effects of Fungicides on Leaf Rust, Berry Disease, Foliation and Yield of Coffee

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1974
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Three fungicides (cuprous oxide, captafol and benomyl) were applied to previously unsprayed coffee trees in 1969. In 1970 the plots were split; one half was unsprayed while the other received the same treatment as in 1969. Leaf rust was moderately severe in 1969 and was well controlled by all three fungicides. In 1970 rust was again moderately severe in control plots (never sprayed) but much more severe in trees sprayed in 1969 but not in 1970. On trees sprayed in both years rust was well controlled in 1970 by cuprous oxide, less well by captafol and poorly by benomyl. Coffee berry disease (CBD) was virtually absent in 1969 and in control plots was sparse (less than 0•5%) in 1970. It was, however, moderately severe on trees sprayed in 1969 but not in 1970. All three fungicides gave good control in 1970 but infection was still greater than in the trees that had never been sprayed.
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Transactions of the British Mycological Society, 62 (3), pp. 495-507
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