| dc.description | The value of the biomass produced at a certain period of plant development is an
important integral indicator of the efficiency of the production process. As a result of selection,
the final value of the grain yield indicator does not change significantly, and the increase in
grain yield is achieved mainly due to the more efficient use of assimilation for replenishment
[1]. The passage of plant development stages, growth intensity and productivity depend to a
certain extent on living conditions. Plants develop best with optimal provision of all necessary
life processes and high-quality implementation of all agrotechnical measures [2]. The
occurrence of drought in the soil with a decrease in moisture content leads to high air
temperatures during the formation of spikes in grain plants, damage to flower buds, termination
of spike formation and their drying out. As a result, the number of grainless spikes increases.
For many plants, high air temperatures are especially dangerous during their flowering period,
leading to flower shedding, node failure, and sterility. The process of dry mass accumulation
continues until the plant belt completely exhausts the chlorophyll grains in its belt and leaves.
[3]. The plant begins to grow strongly from the moment of flowering. Therefore, this period in
the life of plants is considered the most responsible, that is, the “critical period”, when it is
sufficiently supplied with water and nutrients. Wheat yield was, to a certain extent, directly
dependent on physiological conditions during the tillering period, and on the level of nutrient
and moisture supply | en_US |
