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anale 28.pdf - Institutul National de Cercetare Dezvoltare pentru ...

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Insecte prădătoare ale a/l<strong>de</strong>lor din culturile <strong>de</strong> cartol<strong>pentru</strong> sămânţăPREDATORS OF APRIDS FROM SEED POTATO CROPSAbstractThe researches lna<strong>de</strong> between 1989-1991 on seed potato crops from PotatoResearch Institute, Brasov, emphasised the presence of a wi<strong>de</strong> spectrum of pn~(1a.tOI·S,with high natural potential against aphids. On this period, the following pmranletlerswere taked into account: the species structure, their dynamics on vegetationof potato crops and the relation predator/ prey. The number of predator species wassimilar on all the years: 14-15 species. In 1989, has been a close relationship betweenthe dynmnics of aphid population and predators. The dominant groups werecoccinelli<strong>de</strong>s with Coccinella septempunctata 1., and chrisopi<strong>de</strong>s. Maximumof predators was between June 15 - July 31, period with an intense flight ofpopulation.Keywords: predators, coccinellids, chrisopids, aphids, seed potato.Tables:1. The nUlnerical and procentual abundance of insect population in threepotato crop rotation, ICPC Brasov, 19892. The groups and predator species captured from seed potato crops, Brasov;19893. The numerical and procentual report of different groups of beneficialarthropods species, Brasov, 19894. The dominance of Coccinellidae, Brasov, 19895. The numerical and procentual report of different groups of beneficialarthropods, Brasov, 19906. The groups and predator species captured from seed potato crops, JIJ.lU""","'V'h19917. The nUlnerical and procentual report of different groups of beneficialarthropods species, Brasov, 19918. The procentual report of lnain beneficial insect groups from potato crops,Brasov, 1991Figures:1. The sesonal dynamic of beneficial and harmful (vectors) insects fromseed potato crops, Brasov, 19902. The procentual report of main predator insect groups from seed potatocrops, Brasov, 1990VOL. XXVllI 79

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