Evoluția dăunătorilor în cultura rapiței de toamnă și unele elemente de combatere a lor

Abstract

During the growing season, rapeseed can be attacked by a complex of polyphagous pests, or less often - pests with a narrower nutrition specialization. Integrated rapeseed protection provides for the use of a complex of prophylactic measures: production of seed material in specialized house holds; compliance with all requirements regarding the quality of seed material, etc. The listed agrotechnical measures do not ensure full protection from pests. In connection with this, at present, chemical measures have a special role to play in the integrated pest control complex. The chemical control of polyphagous pests in different crops is ensured by a large number of insecticides, and for the cultivation of rape seed these questions require a much more extensive study. Based on the above, the purpose of the research is to study the biological efficacy of the insecticide Inazuma, WG, in combating the rape pest complex. The chemical treatment of rapeseed plants, with the insecticide Inazuma, WG, with the consumption norm 0,2 kg / ha, ensures a reduction of Meligethes aeneus of 99,67 – 90,54%, Ceutorrhynchus quadridens of 98,91 – 89,91 %, Brevicoryne brassicae of 99,15 – 91,62%, during 7-12 days. Based on the research conducted and the results obtained, the preparation Inazuma, WG, can be included as an insecticide to control the main pests of rape seed, by performing 1-2 treatments, with a consumption rate of 0,2 kg/ha.