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The Incidence of Aphis fabae Scop. on Spring‐sown Field Beans in South‐east England and the Efficiency of Control Measures
Author(s) -
GOULD H. J.,
GRAHAM C. W.
Publication year - 1977
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1977.tb01058.x
Subject(s) - aphis , biology , infestation , headland , phorate , agronomy , spring (device) , toxicology , aphid , pesticide , mechanical engineering , fishery , shore , engineering
SUMMARY Surveys of crops of spring‐sown field beans from 1966 to 1974 in the counties of Hampshire, Berkshire, Buckinghamshire and Oxfordshire showed that the incidence of Aphis fabae Scop, infestation varied from season to season and often between counties in the same year. The heaviest infestations occurred in 1967, 1972 and 1973 and the lightest infestation was in 1968 vvhen few winged aphids colonized headland plants. Estimates for 1972 and 1973 showed that treatment was economically worth while on most fields in these years. Phorate was the most frequently used insecticide and gave good control, although it was less effective in years in which there was a dry spring. Disulfoton and sprays of demeton‐S‐methyl and menazon also gave good control, although menazon was less effective as an eradicant spray after colonies of aphids had become established.