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Forecasting egg populations of wheat bulb fly, Delia coarctata (Fall.), from catches of adult females in water‐traps
Author(s) -
COOPER D. A.
Publication year - 1981
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.1365-3059.1981.tb01220.x
Subject(s) - biology , bulb , sampling (signal processing) , agronomy , zoology , ecology , filter (signal processing) , computer science , computer vision
SUMMARY Between mid‐July and the end of August in 1977 and 1978, wheat bulb flies were caught in white water‐traps at 16 oviposition sites in eastern Scotland. The numbers of females caught per site and the subsequent egg populations, estimated from soil‐cores from each site, were linearly related. Water‐trapping may therefore provide a reliable and early forecast of egg numbers, independent of soil‐sampling, and so enable seed treatment to be limited to years when the risk of damage is great.