HERBICIDE USE ON FIBER FLAX CROPS
The results of three-year researches on the effect of dfferent kinds of herbicides and terms of their use on the yield and fiber quality of fiber flax var. Blakit are presented in the article. The researches were conducted on sod-podzol mid-loamy soils of Vitebsk oblast. It was established that the application of Callisto preparation (0.3-0.4 Tha) before the emergence of sprouts and after the termination of the growing season provided the maximum yield increase of total and long fiber flax equaled to 0.8-0.9 and 0.7-0.8 t/ha, respectively. The use of Callisto preparation after the termination of the growing season provided biological efficiency at 93.7-94.4% level which exceeded its pre-emergence application by 9.1-10.6%.