Výsledky vyhledávání - "A. K. H. Wit"

The relation between partial defoliation during the preheading stages of spring cabbage and yield, as a method to assess the quantitative damage induced by leaf-eating insects

Autor: A. K. H. Wit

Publikováno v: Zeitschrift für Angewandte Entomologie. 100:96-100

The relation between artificial defoliation, simulating insect injury to the leaves, and yield was studied in spring cabbage cv. “Extra vroege spitse” to obtain information on the threshold values to be used in this crop. Two field trials, set up

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::848698228495146b19a8d1d9b7a6bbcf
https://doi.org/10.1111/j.1439-0418.1985.tb02763.x

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The relation between artificial defoliation and yield in Brussels sprouts as a method to assess the quantitative damage induced by leaf-eating insects

Autor: A. K. H. Wit

Publikováno v: Zeitschrift für Angewandte Entomologie. 94:425-431

To obtain more information on the threshold values which have to be used in Brussels sprouts, the quantitative damage in this crop, as a result of leaf area reduction by caterpillars was studied in a field trial. In this experiment the insect injury

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1f40928760f36600a5bc4685fa96e75c
https://doi.org/10.1111/j.1439-0418.1982.tb02590.x

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Field tests with the Insect Growth Regulators, epofenonane and fenoxycarb, in apple orchards against leafrollers and side-effects on some leafroller parasites

Autor: R. H. de Reede, A. K. H. Wit, R. F. Groendijk

Publikováno v: Entomologia Experimentalis et Applicata. 35:275-281

The Insect Growth Regulators with juvenile hormone activity, fenoxycarb and epofenonane, were applied either to separate apple trees, which were artificially inoculated with Adoxophyes orana (F.v.R.) and Pandemis heparana (Denn. & Schiff.), or in app

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58e292762ee76e7d98e2b9a2a0e658c2
https://doi.org/10.1111/j.1570-7458.1984.tb03393.x

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Feeding capacity of caterpillars on cabbage, a factor in crop loss assessment

Autor: A. K. H. Wit, H. den Ouden, J. Theunissen

Publikováno v: Entomologia Experimentalis et Applicata. 39:255-260

The speed of development and food consumption of four lepidopterous pest species of cabbage crops were determined, namely Mamestra brassicae L. (Noctuidae), Pieris rapae L., Pieris brassicae L. (Pieridae) and Evergestis forficalis L. (Pyralidae). The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82167ff2f6198487e7eec3fca0bfdc21
https://doi.org/10.1111/j.1570-7458.1985.tb00467.x

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