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Relationship between coffee bean yield, levels of foliar macronutrients and severity of coffee leaf rust

, : Relationship between coffee bean yield, levels of foliar macronutrients and severity of coffee leaf rust. Revista Ceres 224(39): 365-377

Coffee beans of cultivar Catuai Vermelho were totally removed from plants (100%), partially removed (50%) or not removed at 3 different stages: milk stage, maturation, and just before harvesting. Each plant had 4 branches marked on 4 positions (north, south, east and west) and inoculated with a urediospore suspension of Hemileia vastatrix (0.5 mg/ml of water + Tween 80, 0.125%). Leaves were collected from branches at the 3 stages to determine the N, P, K, S, Ca and Mg contents.

Accession: 002477724

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Related references

Bock, K.R., 1962: Seasonal periodicity of Coffee leaf rust and factors affecting the severity of outbreaks in Kenya Colony. Control of Coffee leaf rust in Kenya Colony. In further studies at the Coffee Berry Disease Res. Unit, Nairobi, Kenya, outbreaks of Hemileia vastatrix in areas E. of the Rift Valley occurred in 2 distinct peaks corresponding to the 2 rain seasons, while W. of the Rift Valley there is a singl...

Brown, J.S.; Whan, J.H.; Kenny, M.K.; Merriman, P.R., 1995: The effect of coffee leaf rust on foliation and yield of coffee in Papua New Guinea. Coffee leaf rust epidemics of varying severity were created by application of fungicide treatments, of varying concentration, to experimental plots from 1989 to 1992. Detailed measurements of disease incidence and leaf fall showed that yield and f...

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