New effective herbicid for the protection of the yarn wheat from urgent vegetation

The article presents the results of studies in the experimental field of the don zonal research Institute of agriculture for the application of herbicides of different chemical classes on the spring wheat crops in soil-climatic conditions of the Azov zone of the Rostov region on the black earth. Variety of spring wheat Melody don, predecessor - winter wheat. Fertilizer was not applied. The dominant weeds were ambrosia valinnaista and the Thistle field. Assessment of biological and economic efficiency of the four most commonly used herbicides. In spring wheat the highest biological efficiency against the Thistle field was observed in herbicide Lancelot 450. The application of this herbicide have ensured the destruction of weeds at 100%, in comparison with the control. Against ragweed pelendritou efficiency Lancelot 450 as well was 100%. The use of herbicides in terms of weed the Thistle field and ambrosia pelendritou provided a mathematically accurate crop increase on all options of experience, which amounted to 3.4 t/ha on option Laren Pro to 8.4 on a variant of Lancelot 450.