Studies of the elements of crop care technology showed that their impact did not lead to drastic changes in the density of winter wheat crops, so at the time of full germination the density was 451 pieces / m2, and at the time of spring vegetation was restored 429 pieces / m2.
It was studied that the application of agricultural measures to fertilize crops with anti-stress Bioforge did not significantly affect changes in leaf surface area, due to its focus on supporting physiological processes of plants, rather than in-creasing the leaf surface. But the best results were obtained with the use of plant protection products in the fall: Granstar Pro 75 - 38.6-38.6 thousand m2/ha, v.g., Logran 75, v.g. - 38.3-38.6 thousand m2/ha, Harmony 75, vg - 38.5-38.8 thou-sand m2/ha, for application in the phenophase BBCH 10-13, and in the spring for use in BBCH 27 -29 in combination with Bioforge and separately: 35.9-36.0, 35.9-36.1 and 35.9-36.1 thousand m2/ha, respectively. But the introduction of PIC 75, this year, in the phase of BBCH 7-9 in autumn (38.7 thousand m2/ha), or in spring in BBCH 25-26 (36.2 thousand m2/ha) contributed to the formation of a better area wheat leaves in comparison with other terms of application of this preparation.
It was determined that the best indicators of photosynthetic potential were identified using agronomic care measures with such drugs as: Granstar Pro 75, v.g. (2.30-2.31 million m2· day/ha), Logran 75, v.g. (2.31-2.31 million m2 days/ha), Harmony 75, v.g (2.32-2.32 million m2 days/ha), for application to the phenophase BBCH 10-13, and spring for application in BBCH 27-29 in combi-nation with Bioforge and separately: 2.14-2.16, 2.16-2.17, 2.16-2.17 million m2 day/ha, respectively. With the introduction of PIC 75, v.g., the best indicators of the formation of photosynthetic potential of winter wheat crops were found in the phase of its application BBCH 7-9 (2,30-2,32), or in the spring in BBCH 25-26 (2,13-2,18).
It was found that the use of anti-stress Bioforge had a positive effect on the condition of plants and their accumulation of dry matter. Accordingly, the best indicators of net productivity of wheat photosynthesis were obtained with the use in the fall of such drugs as: Granstar Pro 75, v.g. - 4.34 g/m2 per day, Logran 75, v.g. 4.40 g/m2 per day, Harmony 75, vg 4.35 g/m2 per day, for application in the phenophase BBCH 10-13, and in the spring for use in BBCH 27-29 in com-bination with Bioforge: 4.20, 4.19 and 4.18 g/m2 per day. But the best period of application of PIC 75, v.g., was the phase of BBCH 7-9 in the fall, which con-tributed to the formation of NPF - 4.43 g/m2 per day, or in the spring in BBCH 25-26 in combination with Bioforge – 4.27 g/m2· per day. Moreover, it was dur-ing the spring combination of drugs that the anti-stress Bioforge worked more ef-fectively in terms of relieving the stress of wheat plants, which also affected the patterns of accumulation of CFP.
It was found that one of the best options in the experiment was the use of herbicide PIC 75, v.g. normal consumption of 20 g in combination with anti-stress Bioforge in the development phase of BBCH 7-9. This method allowed to effectively control the emergence of weeds in their juvenile period of develop-ment, and including due to the pronounced soil action of the drug to obtain an average annual yield of winter wheat at 6.77 t / ha. Despite the much lower con-trol efficiency of the main weed species in the spring, the application of the herbi-cide PIK 75, v.g. in the early stages of growth and development of winter wheat (BBCH 25-26 - spring vegetation resumption) at a rate of 20 g / ha in combina-tion with anti-stress Bioforge was effective and provided a crop yield of 6.09 t / ha
It was investigated that the application of the herbicide Logran 75, v.g. in the development phase of wheat plants BBCH 10-13 with a rate of 10 g/ha in combination with anti-stress Bioforge allowed to obtain the maximum yield (6.67 t/ha) compared to similar applications of other studied drugs. But the use of a similar rate of 10 g/ha in combination with the anti-stressant Bioforge in the de-velopment phase of wheat BBCH 22-25 was less effective compared to the pre-vious period and received 6.22 t / ha of wheat grain. Similarly, the use of the drug without anti-stress did not differ significantly in the formation of the level of productivity compared to the recommended ones. But the use of herbicide Logran 75, v.g. in the development phase of wheat plants BBCH 27-29 with a rate of 10 g / ha in combination with anti-stress Bioforge allowed to obtain the maximum yield (5.95 t/ha) compared to similar applications of other herbicides. But the in-troduction of a similar rate of 10 g / ha in combination with anti-stress Bioforge in the development phase of wheat BBCH 30-35 was less effective compared to the previous period and received 5.55 t / ha of grain.
