Side effects of the use of deltamethrine in the prophylactic chemical control of the European corn borer
1987
Leisner, A. (Hohenheim Univ., Stuttgart (Germany, F.R.). Inst. fuer Phytomedizin) | Ohnesorge, B. | Wiener, G.
The side-effects of deltamethrine-application in maize during late June-early Juli were studied in plots of 700 to 2000 square metre size in southwestern Germany during 1983 and 1985. Spiders, coccinellids and anthocorids were affected severely, syrphids suffered less. Predator populations increased again after 2 to 4 weeks, this was mostly due to immigration from outside. In 1983, when aphid occurrence in cereals and maize was generally insignificant, aphid density on the treated plots remained low, e0955ven if on a higher level than in the untreated plots. In 1985 the elimination of the antagonists resulted in an aphid outb
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