Economic efficienty and agro-ecological assessment of herbicides usage for the cultivation of white cabbage parent plants

Abstract

The composition of agrobiological groups of weeds in the agrocenosis of white head cabbage queen-cell under conditions of irrigation of the Left-Bank Forest-Steppe of Ukraine is analyzed. It was proved the effectiveness of soil herbicides Stomp and Butisan in reduction of weed spreading in the phase of two or three leaves of the crop by 71.5–76.2 %. The introduction of the Fusilade Super herbicide causes a decrease in the number of grass weeds at the time of formation of cabbage leaf rosette by 80.2 %, the use of Lontrel – a decrease in the number of dicotyledonous weeds by 83.6 %. At the use of herbicides, there is a tendency to increase the interphase growth periods and biometric parameters of white head cabbage plants. The use of Stomp and Butisan ensures the preservation of the yield of cabbage queen-cells at the level of 9.3–10.3 t/ha and forms a low-risk level of agrocenosis contamination (agroecotoxicological index ranged from 0.003–0.063). Key words: herbicides, white head cabbage, biometric parameters, yield, agroecotoxycology index.