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Type of publication: conference paper
Type of publication (PDB): Straipsnis nerecenzuojamoje Lietuvos konferencijos medžiagoje / Article in non-peer-reviewed Lithuanian conference proceedings (P2c)
Field of Science: Agronomija / Agronomy (A001)
Author(s): Stašaitis, Sigitas
Title: Kai kurių insekticidų įtaka vasarinių rapsų derlingumui
Other Title: The impact of some insecticides on yeld of spring rape
Is part of: Jaunasis mokslininkas 2011: studentų mokslinės konferencijos pranešimų rinkinys/ Lietuvos žemės ūkio universitetas. Agronomijos fakultetas. Akademija, 2011
Extent: p. 33-34
Date: 2011
ISBN: 9986-948-68-1
Abstract: The aim of this investigation was to identify the impact of five insecticides Mavrik, Proteus, Fury, Karate and Fastac on yield of spring rape. The experiment carried out in Pagausantis I village, Jurbarkas region in 2010. During the field trial two observations were made. The alternation of the number of flea beetles (Phyllotreta spp.) was studied using Petliuk box. The alternation of the number of pollen beetles (Meligethes aeneus F.) was studied using stack made of wooden timber which walls were made of polythene. During field trial it was found out that only pollen beetles reached the point of economic malifecence. At that day the field was sprayded one time with insecticides. Immediately after spraying of insecticides started the observation of pollen beetles. Observation had lasted for few weeks. It was found out that all insecticides reduced the number of pollen beetles. The best results were showed by insecticide Fastac. The effectiveness of this insecticide was confirmed when the analysis of summer rape's yield was made. Assay showed that all insecticides had good influence on summer rape's yield. Due to the use of insecticides there was recieved 530-692 kg ha' appendage of rape's yield. The best results were showed again by insecticide Fastac
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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