Influence of herbicides on photosynthetic and fermentation activity of soybean leaf apparatus

The degree of influence of herbicides on photosynthetic activity of crops and soybean yield under the conditions of the Amur region was studied, the resistance of cultivated plants to them according to the activity of peroxidase enzyme was determined. The decrease in the number of weeds through the use of herbicides contributed to creating favorable conditions for formation of soybean leaf surface and improving the work of a photosynthetic apparatus. In general, during a vegetation period, the photosynthetic potential was higher in soybean in the variants with the use of herbicides Bazagran (against the background of soil Frontier) and Pivot by vegetation. The indicators of a leaf area and duration of their work in crops of the control variant were the lowest ones. The photosynthetic potential (PhP) reached the highest value in the period of a seed filling in all the variants of the experience. It reached its maximum value in the variant with the use of Pivot herbicide, exceeding the control variant by 46.8%.The stress effect of Pivot herbicide on the cultivated plants of soybean was revealed, which is confirmed by the high specific activity of peroxidase. It was established that the increase in a peroxidase activity and the maximum number of multiple forms of this enzyme indicated a high adaptive potential of soybean and resistance to Pivot herbicide, with its direct effect on the seeds.

соя, гербициды, площадь листьев, фотосинтетический потенциал, продуктивность фотосинтетического потенциала, фермент пероксидаза, soybean, herbicides, leaf area, photosynthetic potential, productivity of photosynthetic potential, peroxidase enzyme