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Publication Date
1977
Description
For direction in the control of blossom-damaging Apion species in red clover seed stands, a programme was developed to observe the pests by determining their population density on plants and blossom buds. In dependence on a threshold in the degree of pest attack, applications of insecticides were orientated to the time when the second clover growth developed green blossom buds. Best results were obtained with polychlorcamphen in higher dosages and at high temperatures. Applications of lindane, kelevan, and methoxychlor + lindane were not successful. The most frequent species of Apion were A. trifolii and A. apricans.
Citation
Bochow, Helmut; Zchimmer, Christian; and Delinsky, Helga, "Conditions and possibilities for the directed control of Apion species in large red clover seed stands" (1977). IGC Proceedings (1977-2023). 10.
(URL: https://uknowledge.uky.edu/igc/1977/sess8/10)
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Conditions and possibilities for the directed control of Apion species in large red clover seed stands
For direction in the control of blossom-damaging Apion species in red clover seed stands, a programme was developed to observe the pests by determining their population density on plants and blossom buds. In dependence on a threshold in the degree of pest attack, applications of insecticides were orientated to the time when the second clover growth developed green blossom buds. Best results were obtained with polychlorcamphen in higher dosages and at high temperatures. Applications of lindane, kelevan, and methoxychlor + lindane were not successful. The most frequent species of Apion were A. trifolii and A. apricans.
