IMPACT OF TANK MIXTURES OF HERBICIDES WITH UAN ON WEED INFESTATION AND YIELD OF MAIZE FOR GRAIN
Using pesticide tank mixtures allows not only to expand the effect, but also to reduce the cost of treatment and the consumption rate of preparations. It was established that in the combined application of herbicides with UAN the variant Mais Ter Power, OD + UAN with a consumption rate of 1.5 l/ha + 30 l/ha had the highest biological efficiency, the death of weeds amounted to 93.1-99.4%. The most effective variant was Mais Ter Power, OD + UAN with a consumption rate of 1.0 l/ha + 30 l/ha, where the yield increase was 83.7 dt/ha. The number of grains per cob in that variant was 562.6 pieces, and the 1000-grain weight was 262.4 g. The maximum weight of the plant with the cob was 906.3 g and the weight of the cob in the husk was 340.2 g. The maximum application rate of Mais Ter Power, OD + UAN (1.5 l/ha + 30 l/ha) was phytotoxic for maize plants, they lagged behind in growth. The yield increase amounted to 46 dt/ha. The number of grains per cob in that variant was 491 pieces, and the 1000-grain weight was 221 g.