THE EFFECT OF FERTILIZERS AND HERBICIDES ON CHLOROPHYLL ACCUMULATION, PHOTOSYNTHESIS PRODUCTIVITY AND WHEAT YEILD

Abstract

Herbicides and fertilizers applied increase chlorophyll accumulation, photosynthesis productivity and wheat yield. The total amount of chlorophyll during vegetation varied within 0.2–0.8 % of leaf dry matter. When exposed to ammonium nitrate and Dialen separately and jointly, chlorophyll content increases during vegetation, with joint application the increase being much higher. Chlorophyll content maximal value was in the phase of tillering, minimal one was in the phase of shooting. Photosynthesis maximal value was observed in all ontogenesis phases in the variant with ammonium nitrate and Dialen joint treatment. Under separate expositions to ammonium nitrate and Dialen wheat yielding goes up, but their strongest effect can be seen in the variant of joint application. The wheat yielding increase is due to the higher number of productive stalks, grains number per plant and 1 000 grains weight.