Terms and norms of introduction the “Puma Super 100” in crops of the durum wheat for the southern forest-steppe of Western Siberia

The experiments were conducted in the experimental field of the Federal State Educational Institution of Higher Professional Education Omsk State Agrarian University, located in the southern forest-steppe of Omsk region, in 2013-2015. The soil of the experimental plot was pratal black earth (chernozem) average power low humus medium loam with a humus content in arable layer 3.9 %. The spring durum wheat of the Omsk Emerald (Omsky Izumrud) variety was sown at a norm 4.5 million/ha on May, 16-20. Spraying of all allotments by the “Mauser” herbicide (10 g/ha) was conducted in the period of formation of 2-3 leaves at the wheat, and the “Puma Super 100” even in the tillering and formation of 1-2 knots on the stem stage with the rate of application of 0.5, 0.6 and 0.7 l/ha. A consumption of working fluid was 200 l/ha. The repeated experience has been fourfold and a plot area of 10 sq. m. The anti-bluegrass herbicide processing increased the survival rate of the wheat plants and the development of their above-ground mass with the optimum values in the first period of spraying at the flow norm of 0.6 l/ha. Against the background of processing of crops by the “Mauser” herbicide the share of all weeds in agrophytocenosis was 19.5 %, including the bluegrass - 13.8 %. Spraying by the “Puma Super 100” herbicide provided the weak degree of a weednessity with a share of weed component 4.4-8.0 %. Increments of the grain yield capasity were significant for all of processing timing and application rates - 0.35-0.57 t/ha, with the best values in the first term of a norm of 0.6 l/ha.