ВЛИЯНИЕ ПРИМЕНЕНИЯ ПОЛИМЕРНЫХ СТРУКТУРООБРАЗОВАТЕЛЕЙ НА ФИТОТОКСИЧНОСТЬ АГРОЧЕРНОЗЕМА

Abstract

The use of polymer structure–forming agents in agriculture is a promising method of reducing soil erosion. An important condition for application is the assessment of the phytotoxicity of the polymer composition. The effect of polymer compositions VPRG® (VPRG) and VPK-402® (VPK) on the growth of the Trifolium rubens plant was studied in the laboratory on agrochernozem. The degree of influence was assessed by the change in the dry mass of the upper part of the plants relative to the control. It was found that the use of VPRG in doses of 106, 212 and 424 kg/ha per 10 m3 of water, and VPK in doses of 280 and 560 l/ha per 10 m3 of water did not have a toxic effect on the germination and growth of the Trifolium rubens plant. The dry weight of the upper part of the plants grown using these doses of polymers exceeded the control values by 1.14–1.47 times. The use of ВПК at a dose of 1120 g/ha per 10 m3 of water, as well as mixtures of polymers of VPRG and VPK in doses of (106 kg/ha of VPRG)/(280 l/ha of VPK) per 10 m3 of water and (424 kg/ha of VPRG)/(140 l/ha of VPK) per 10 m3 water had a negative effect on the growth of the red clover plant: the weight of the dry mass of the upper part of the plant decreased by 1.1–2.0 times relative to the control.