Über die Wirkung des Entwicklungshemmers Dimilin auf Forstinsekten
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Effects of Dimilin, a new selective insecticide, on forest insects
Dimilin (PH60-40 (1-(4-chlorophenyl)-3-2,6-difluorobenzoyl)urea) is a new insecticide prohibiting the moulting of insect larvae. In last years studies were made in Munich in laboratory and under field conditions, partly by using of aeroplanes, to test the effects of Dimilin on several forest pests as well as on predatoring insects and parasites. The mortality of the phytophagous insects taking up the hormonoid by food reached 100% in all experiments. On the contrary the predators and parasites were spared. Solely some problems are included in the longevity of the substance.
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