THE EFFECT OF AGROTECHNICAL METHODS ON THE PHOTOSYNTHETIC APPARATUS OF SPRING WHEAT

The article presents the results of research on the influence of agrotechnological techniques on the photosynthetic apparatus of spring wheat of the variety Beyskaya. Under the conditions of complete fallow, the pre-sowing application of mineral fertilizers and the use of plant protection products contributed to the formation of the maximum leaf surface area. When sowing on complete fallow, the leaf surface area in comparison with the grain preceding crop in the tillering phase was 25.0% larger, in the booting stage by 16.9%, and in the heading stage by 13.9%. The application of mineral fertilizers on complete fallow increased the leaf surface area by 36.9 – 41.2%, while the use of plant protection products increase one by 39.0 – 42.0%; for the grain preceding crop with the use of fertilizers by 39.1–49.1%, with the use of protective equipment – ​​41.7 – 46.9% compared with the control.