Abstract
This article studies the influence of sowing methods, schemes, and norms on the formation of leaf area and on the net productivity of photosynthesis of new varieties of common beans. Studies have shown that in variants with high density of standing, the area of leaves on one plant is reduced. The reason for the decline in this indicator is associated with high competition of plants. But on one hectare, this indicator increases due to a larger number of plants. In variants with a low sowing rate per hectare, the leaf area decreases, but in one plant it increases. Studies have also shown the dependence of the net productivity of photosynthesis on sowing methods. An increase or decrease in the seeding rate and a change in seeding methods negatively affect this indicator.
Highlights
One of the main vital processes of plants is photosynthesis
A study of the photosynthetic activity of crops showed that the dynamics of leaf area, photosynthetic potential and the net productivity of photosynthesis depend on agrotechnical methods of cultivation
The light intensity at different densities of standing is different, the data of our studies indicate that in thickened crops 740 thousand seeds/ha, in variants with row spacing’s of 45 cm, the net productivity of photosynthesis in the flowering phase - the formation of beans in the Ravot variety was 4.66 g / m2 × day, while in sparse seeding it was 5.87 g / m2 × day
Summary
One of the main vital processes of plants is photosynthesis. Photosynthesis arose as a result of adaptation to soil and climatic conditions over time. A study of the photosynthetic activity of crops showed that the dynamics of leaf area, photosynthetic potential and the net productivity of photosynthesis depend on agrotechnical methods of cultivation. The maximum leaf area was observed in the variant with a seeding rate of 123.4 thousand seeds / ha, it amounted to 1.73 thousand / cm[2]. The area of leaves per 1 ha was higher in crops with a high stand density than in variants with a sparse stand density of plants. With an increase in the feeding area, the leaf area, in the variant with a seed rate of 123 thousand seeds / ha, was 21.31 thousand m2 / ha, which is 10.73 thousand m2 / ha less than in the variant with thickened crops. In the variant with a seeding rate of 740 thousand seeds, the area of the leaf surface of the sowing was 35.27 thousand m2 / ha. Decrease in the seeding rate reduces the area of the leaf surface, in the variant with the seeding rate of 123.4 thousand seeds / ha, the surface area of the leaf is 23.03 thousand m2 / ha
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