Comparative efficiency study of herbicides in corn crops in Stavropol territory
Keywords:: corn, herbicides, weeds, biological efficiency, yield
In this work the herbicide mixture effect on the weed component of agrophytocenosis during the cultivation of corn hybrids was studied. Field tests were conducted in 2017–2018 in the conditions of the sufficient moisture zone of the Stavropol region on hybrids of different ripeness. For the experiment the tank mixture of herbicides was prepared with Dublon Super (0.4 kg/ha) + Egida (0.2 l/ha) and the herbicide Cordus Plus (0.44 kg/ha). The use of the preparation and tank mixture on the basis of several active ingredients allowed expanding the range of their action and to increase the effectiveness of the treatment against the herbicides. The biological efficiency of the studied herbicides was high, i.e. from 88.6 to 99.9 %. Up to 2.13 t/ha grain yield increments were obtained. Experimental data allowed us to recommend the studied preparations to protect corn from weeds and to obtain guaranteed yield increase.