Narrow-leaved lupine: the influence of herbicides and fertilizers on green mass productivity

In field experiment on chernozems of the Krasnoyarsk forest-steppe in the conditions of insufficient moisture providing (the State Customs Committee for June-August - 0.8) the influence of means of the intensification of production (herbicides against monocotyledonous and two-submultiple weed plants, ammonium nitrate) on the efficiency of green mass of lupine narrow-leaved - new culture for the region was studied. Lupine crops of Belozerny 110 variety were placed in forage crop rotation; the predecessors were annual forage grasses. The experiment options included: 1) control (without the use of intensification means); 2) fertilizers - N30; 3) herbicides (‘Lazurit', ‘Pilot' + ‘Quickstep'); 4) fertilizers - N30 + herbicides (‘Lazurit', ‘Pilot' + ‘Quickstep'). 10 species of segetal vegetation belonging to spring biological group were recorded in the agrocenosis. Dominating weeds were amaranth (species) and millet (species). The site weediness was estimated as heavily polluted - before using the herbicides, there were 57 weeds per 1 m2 on average. The soil herbicide ‘Lazurit' was applied on the 2nd day after lupine sowing. However, sharp increase in air and soil temperature, the absence of precipitation for a long period led to the decrease in the preparation effectiveness, respectively, it was necessary to use a tank mixture of herbicides ‘Pilot' (against dicotyledonous weeds) + ‘Quickstep' (against cereal weeds) for the crop vegetation. Biological effectiveness of the applied herbicides made 71.9 %. When the field was heavily weeded, the response of blue lupine plants to herbicides exceeded the reaction to ammonium nitrate. The use of ammonium nitrate in a dose of N30 did not have a positive effect on the productivity of lupine green mass. The maximum yield of the green mass of the crop - 14.29 t/hectare was obtained on the variant with herbicide protection.