Comparing variant 10 with variant 1, it was found that the leaf surface in variant 10, the plant
ISSN: 2278-4853 Vol 10, Issue 9, September, 2021 Impact Factor: SJIF 2021 = 7.699
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Also, with a plant density of 80 - 90 thousand bushes /ha, the leaf surfac
e was 8993-7445 sm
2
in
options 7 and 13, where Zerox 1 - 3 l/t, l/ha was applied (Diagram).
Thus, the highest result of the 15 options on a sheet surface was obtained by Zerox at 2 l/t; 2 l/ha
+ surfactant was observed in variant 10, leaving the number of bushes 80-90 thousand bushes /
ha, and (pre-sowing seed treatment) at a rate of 2 l/t (feeding leaves during the growing season) 2
l/ha + surfactant 0,15 l/ ha, the use of the optimal dose of the immunostimulant has a positive
effect on the physiological processes of the plant [
17
].
When studying the effect of the immunostimulantZerox in different doses on
Diagram The effect of different planting densities of cotton varieties "Bukhara-10" in the use of
different doses and timing of the Zerox on the leaf surface dry matter, leaving 3
Different plant densities (80-90; 100-110; and 120-130thousand bushes /ha) of cotton of the
Bukhara-10 variety, the following three-year results were obtained. At the same time, the
greatest result from different plant density in the control variant was obtained in variant 1 - 80 -
90 thousand pcs.
Bushes /ha. So, in all variants, left per hectare for 80-90 thousand pieces’ shrubs hectares’
accumulation of dry matter was greater than other options.
Table 2 provides data on dry weight, leaf area and photosynthetic productivity.
Also, when using different norms and density of standing of cotton, the most positive result on
dry weights was observed in the Zerox variant with a consumption dose of 2 l/t, and 2 l/ha, it was
604 g, compared with the application of Zerox at 1 - 3 l/t, 1 – 3 l/ha was, respectively, 156-239 g
more.
According to the scheme of the experiment, the number of bushes per hectare was 80-90
thousand pieces, on the optimal version of Zerox, which was used at – 2 l/t, 2 l/ha + surfactant in
the phase ripening 302 g of dry matter accumulated more in comparison with the 1st control
variant of the same number of bushes. As a result, when comparing the control option with the
criterion of mathematical accuracy in the studies, it was found that there is a significant
difference between them.
Thus, it was found that the optimal rate of application of the Zeroximmunostimulant in different
doses due to one plant is the maximum level of dry matter when applied in an amount of 80-90
thousand bushes/ha.
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