INFLUENCE OF SOWING TIME AND SEEDING RATES OF SUGAR BEET SEED PLANTS ON WINTERING, YIELDING AND QUALITY OF SEEDS UNDER CONDITIONS OF THE FOOTHILL IRRIGATED ZONE OF CHUISKY VALLEY IN THE KYRGYZ REPUBLIC
The results of field experiments to study the effect of time and seeding rates on the productivity of straight-up sugar beet seed plants are submitted. It is shown that the greatest density of plants was obtained when sown on September 1. This was facilitated by the most favorable temperature and soil conditions of this period of the year, i.e. the hot days of August had already passed, and the cool time of September had not yet come. The effect of heat on the development of plants was confirmed by the fact that the number of leaves decreased due to the later sowing dates. It has been proved that the time of sowing largely determined the size of root crops of the seed plants. The plants of the first sowing term (August, 20) were much larger than subsequent crops. Thus, the weight of a single plant on the plantings of August, 20 averaged 11.6 g, and of those sown in September - 10-3.8g. The optimum seeding rate was 40 seeds per 1 linear meter of a row. This seeding rate provided a high degree of wintering and contributed to the saving of expensive seeds. Early September was considered to be the optimal time for sowing.