Classification of soybean varieties on precocity in Uzbekistan

The detailed estimation of different maturity groups' soybean varieties on time of formation and amount of branches, leaves and generative organs is lead. The analysis of the obtained data has shown that early maturing varieties of a soybean had the lowered reserve of beans setting because of smaller flowers amount on plants. In this connection it is drawn a conclusion on expediency of cultivation in Uzbekistan late-maturing varieties, both at spring, and at summertimes of sowing. On the basis of the lead researches by authors the classification of soybean varieties on duration of the vegetative period is developed and offered.