THE EFFECT OF STIMULANTS ON THE GERMINATION, DEVELOPMENT, AND YIELD OF SOYBEAN CROP
DOI:
https://doi.org/10.5281/zenodo.21467749Keywords:
Winter wheat, repeated crop, soybean, seedling, germination, stimulator, application rate, timing, growth, development, dry weight, pod, weight of 1000 grains, grain yieldAbstract
In the context of global climate change, drought, and extreme weather conditions, the effectiveness of applying
stimulants to soybean crops after winter wheat has been determined for the effective use of land, growing two
harvests per year, meeting the population's demand for food products and livestock for feed, preserving and
increasing soil fertility.
The most favorabletemperature forintensivegrowth and development of soybeans is around 20-25 0C, however,
it can grow well even in the temperature range of 25-30 0C.
In the experimental area, the average air temperature
in July was 31.2-33.3 0C, the highest air temperature was 42.2-44.8 0C, at such a high temperature, the soybean
plant is under stress and the possibilities of growing a high yield are limited. To ensure the intensive growth and
development of soybeans and obtain high yields, the use of Uzgumi and Ma'suda stimulants in various doses
before sowing seeds and during the growing season was studied.
When treating soybean seeds sown repeatedly after winter wheat with the Uzgumi stimulant at a rate of 0.6 l/t
and the Ma'suda stimulant at a rate of 3.0 l/t, it accelerated by 4.9-6.8%, and germination was observed 1-2 days
earlier.
When Uzgumi was applied to soybean seeds at a rate of 0.6 l/t, at 3-5 leaves at a rate of 0.2 l/ha, at budding at a
rate of 0.3 l/ha and at flowering at a rate of 0.4 l/ha, the plant height increased by 2.5 cm, the number of pods
increased by 2.5 pieces, when Ma'suda stimulant was applied to soybean seeds at a rate of 3.0 l/t,at 3-5 leaves at
a rate of 6.0 l/ha and at budding at a rate of 9.0 l/ha, the plant height increased by 1.5 cm, the number of pods
increased by 2.2 pieces.
When treating repeated soybean crops with Uzgumi and Ma'suda, the dry mass increased by 1.79-2.93 g and
more biomass accumulated.
When using the stimulants Uzgumi and Ma'suda, the grain yield of soybeans was 2.02-2.11 t/ha, and the grain
yield increased by 0.31-0.40 t/ha
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