Some aspects in the control of rape pests through the use of preparations based on acetamiprid 200g/l + lambda-cyhalotrin 150g/l, in the conditions of the Republic of Moldova

Abstract

If prevention and control measures are not applied, the harvest losses of rapeseed crops can reach 30-70% of the potential harvest. Taking into account the particularities of the rapeseed culture, it is important that chemical treatments are applied with selective phytopharmaceutical products, with little residue and a low degree of toxicity and only with warning in strictly necessary numbers, to avoid the formation of toxic residues. It is necessary to pay more attention to the activity of the numerous species of pests, which attack the rape crop during the entire vegetation period, from sowing to harvesting. As a result of the research carried out, it was demonstrated that, in the integrated complex of rape pest control, in the Republic of Moldova, chemical control plays an important role, and the composition of phytosanitary products must be constantly renewed. Thus, the chemical treatment of rape plants, with the insecticide with the active substance acetamiprid, 200 g/l + lambda-cihalotrin, 150 g/l, with a consumption rate of 0,2 l/ha, ensured an essential reduction in the numerical density of the species Meligethes aeneus F., (98,99 – 91,48%), Ceuthorychus quadridens Pany (100,00 – 90,20%) and Brevicoryne brassicae L., (97,76 – 91,17%).