A Comparative Study of the Sensitivity of Maize Lines to Some Herbicides

In 2008-2010, on a soil type highly leached chernozem, a field experiment was conducted on the effects of herbicides for johnsongrass control rimsulfuron (Titus 25 DF) and nicosulfuron (Mistral 4 CK), administered at an optimal dose, once and twice, within an interval of 14 to 20 days. The sensitivity and yield of four maize lines - RM 619, MO 17, 61/31 and 302/12 was tested. The aim of the current experiment is to obtain information on the impact of the herbicides rimsulfuron and nicosulfuron on the sensitivity and yield of inbred maize lines.The most sensitive to herbicides for johnsongrass control with the highest percentage of perishing plants is line RM 619, and the most resistant one is MO 17. The grain yield reported in the test lines treated with herbicides for johnsongrass control was lower than the control variants of the relevant genotype. Only МО 17 and 302/12 lines treated twice with herbicide Titus 25 DF reported yield increase of 7% and 6 % against the control group.