BACKGROUND OF WEED MANAGEMENT OF WHEAT FIELD IN RUSSIA

Study of the conduction of weeds prevention, eradication, and control with biological weed management agents is recommended alternatives to the use of herbicides that provide new environmental options weed management tools under the wheat field condition of Moscow and consequently maintaining satisfactory crop yield under intensive technology in a 3 years period: 2011-2013. Field experiment were laid out to appraise the efficacy of reduced concentrations of a post-emergence herbicide verdict in combination with biocontrol agent to suppress maximum major weeds in wheat field under the condition of Non-chernozem zone, Moscow Research Institute of Agriculture «Nemchinovka» Moscow area, Odintsovskiy region, Russia country (55° 45′ N, 37°37′ E and 200 m altitude). Wheat cv. Moscovskaya 39 was planted in twenty ninth of August 2011 and in the second year the same variety of wheat was planted in second of September 2012 using plant densities of 5 million viable seeds per hectare. Wheat seeds were germinated in eighth of September 2011 and fourteenth of September 2012 respectively in both experimental years. Due to protect seeds against pests and diseases seeds were mixed with fungicide and insecticide before sowing. Experiment was laid out to evaluate the weed suppressive activity of biological agents [bioherbicide (3 L ha-1) + biofertilize, growth regulatore (1 L ha-1) + biofungicide with anti stress activity to weather conditions and chemical treatments and growth regulator activity (1 L ha-1)] in combination with reduced doses of new generation post emergence herbicide ‘Verdict' (0; 0,2; 0,3 and 0,5 kg ha-1) surfactant 0,5 L ha-1 was mixed to herbicide as a tank mix. Verdict formulation followed as: Mesosulfuron-methyl - 30 g/kg + Iodine-sulfuron-methyl-sodium - 6 g/kg + Mefentir-diethyl - 90 g/kg. Trial was conducted in a randomized, complete block design [RCBD] with four replicates. The herbicides were applied post emergence by a knapsack sprayer which had flat fan nozzles (Nozzle number 11002). The advantages that have gotten as simultaneous control of combined weed community, one-time spraying and not necessary to combine different herbicides, so their antagonism can be avoided.