TERMINATION OF SHADE VARIETIES IN SYRDARYA CONDITIONS AND BIOSTATISTIC BASIS OF ITS SELECTION
Keywords:soybean varieties, sowing dates, yield, protein, oil content, factor analysis, correlation coefficient
This article contains information on the timing of sowing of soybean varieties in the Syrdarya region. Varieties of shade such as Tomaris Man-60, Selekta-302 belonging to the genus Glycine hispida were selected as the object of research. In the Syrdarya region, when soybean varieties were planted in early April, the yield was 24.81 s/h, on April 10 26.85 s/h, on April 20 28.85 s/h, and on April 30 25.86 s/h. The protein content of soybeans sown in early April was 37.5%, 36.98% on April 10, 35.75% on April 20 and 35.02% on April 30. Using factor analysis, it was determined that the optimal planting date for soybean varieties is April 20. It was noted that the amount of protein in soybeans was affected by sowing dates.During this period, soybean varieties yielded an additional 4.04 s/h, much. An inverse correlation was noted between grain protein content and yield.