FORMATION THE PHOTOSYNTHETIC PRODUCTIVITY OF SOYBEAN CROPS UNDER THE APPLICATIONS OF HERBICIDE DYESILYET, PLANT GROWS REGULATOR BIOLAN AND MICROBIOLOGICAL DRUG RYZOBOFIT

Abstract

Low competitive ability of soybean is the reason that it agrocenoses formed favorable conditions for the growth and development of weeds different biological groups that significantly affect the yield of soybean. Unfortunately, today it is one of the most critical problems associated with growing crops. Therefore, the use o f herbicides is a necessary measure in soybean grain, what allow for successful weed control and obtain high yields of good quality. The aim of our study was to identify the influence o f drugs studied the formation of photo synthetic activity of crops of soybean and its performance.As a result of studies, we found that the studying drugs has a positively influence on the formation of photosynthetic parameters o f soybean plants. Thus, under the applications of Dyesilyet in rules of 0,6 1/ha the leaf surface formed at 13,2 thousand m2/ha, while in the control variant the figure was within 10,5 thousand m2/ha. At the same time variant with using Ryzobofit the leaf surface increased by 1,8 thousand m2/ha compared with the control 1 and on 1,3 thousand m2/ha using a variant with using Biolan 20. The use of herbicide Dyesilyet in rules of 0.6 and 0.8 1/ha on the background pre­ treatment of soybean seeds of Biolan provided with leaf area growth in accordance by 4,2 and 4,0 thousand m2/ha compared with controls. The use of Dyesilyet in rules o f 0.6 and 0.8 1/ha on the background pre-treatment of soybean seeds of Ryzobofitom contributed to the rise of the largest leaf surface in the experiment, which was 15,3 and 15,0 thousand m2/ha accordance with the application. We found that the biggest area of leaf surface in soybean formed in the flowering stage for all variants of the experiment. However, the strong rise of the leaf surface promoted use the herbicide on the background pre-treatment o f soybean seeds of Biolan and Ryzobofit. The largest area o f leaf surface in the flowering stage was observed at ways of making Dyesilyet (0.6 and 0.8 1/ha) and seed processing Ryzobofit, representing 47,2 and 45,8 thousand m2/ha accordance with the application. Application Dyesilyet in these same rules on the background pre-treatment of soybean seeds of Biolan provided increase leaf area within 46,3 and 46,9 thousand m2/ha.We found a positive effect of the herbicide and the background pre-treatment of soybean seeds of Biolan Ryzobofit on the net productivity of photosynthesis. Herbicide Dyesilyet combined with Biolan and Ryzobofit enhances accumulation of solids unit leaf surface soya manifested in the growth of net photosynthetic productivity. The most intensive accumulation of dry matter in all phases of development observed in soybean variant using Dyesilyet (0,6 1/ha) on the background pre-treatment of soybean seeds of Ryzobofit. We found a positive effect on study drugs on the content of chlorophylls and carotenoids.The joint use o f Dyesilyet, Biolan, but Ryzobofit provide high value content of pigments compared to controls. So, when you make Dyesilyet in drug 0,6 1/ha on the background pre-treatment of Ryzobofit the content of chlorophyll was higher than the control variant exceeded the 33,9 mg% and chlorophyll on the 10,7 mg% of wet weight. The content of carotenoids was within 59,5 mg% on wet weight in the flowering stage.So, the herbicide Dyesilyet, plant growth regulator Biolan and microbiological agent Ryzobofit helped to reduce the level of weed-infested, which has a positively affects on the formation of leaf surface, the accumulation o f dry matter in all phases of soybean and significant increase the amount the content of chlorophyll and carotenoids. The highest photosynthetic rates are formed under the application of herbicide Dyesilyet in rule 0,6 1/ha on the background pre-treatment of soybean seeds of Biolan or Ryzobofit. This method of application makes possible to reduce herbicide rate by 25%, contributing biologization soybean growing technology.