Th. Wildbolz

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The possibilities and difficulties of obtaining population datas for orchard insects are shown with the help of a few examples. Some factors are mentioned which seem to have a great influence on population dynamics such as reproduction, dispersal and migration, food plant, climate and weather, predators, parasites and diseases, insecticide treatments,(More)
For the last several years investigations on the possibilities of forecasting the importance of orchard insects and mites in central and eastern Switzerland have been underway to prevent unnecessary treatments. Factors are discussed which influence the economic importance of a pest. Some approximate population levels are given which may be used as critical(More)
La connaissance et l 'dtude comparative de diffdrentes mdthodes de contr61e ou d'dchantillonnage de la faune des vergers pratiqudes par les spd~ialistes s 'occupant de la lutte intdgrde dtaient l 'un des buts principaux de la Semaine de travail de la C.I.L.B., tenue g Saxon (Vs, Suisse), du 8 au 12 juin 1964. Au cours d'essais pratiques, effectuds dans les(More)
der Pilz Trichoderma lignorum, der bei Myzellarinokulation immer das Welken der infizierten Zweige verursacht . 0. Eichhorn Wildbolz, Th. n. W. Vogel, 1959: Uber den EinfluB von inteusiver and sebonender Insektizidsprii3ung in Apfelanlagen. Schweiz. Z . f. Obstu. Weinbau, 68, S. 78-86. Die Autoren fiihren seit einer Reihe von Jahren ansgedehnte(More)
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