THE INFLUENCE OF SOWING TIMES AND MINERAL FERTILIZERS ON ELEMENTS OF THE YIELD OF RYE VARIETIES

Abstract. On the irrigated lands of the Samarkand region have been studied some elements of the structure of the rye crop of varieties Vakhshshskaya 116 and Shalola, as well as the number of grains per spike, sowing time, and per 1000 grains per spike, the effect of mineral fertilizers. With the increase in the rate of mineral fertilizers in the early (1.10) sowing of Vakhshskaya 116 cultivar, it was observed that some elements of the yield structure were reduced due to plant dormancy. It was noted that the medium-term sown variants were higher than the early and late sown variants. The lowest rate in this variety was observed in late (1.11) planted varieties. There were no cases of waterlogging in the Shalola variety, which did not adversely affect some elements of the crop structure. The number of grains per spike in the early (1.10) sowing period is from 31.3 to 50.2 grains, in the medium (15.10) sowing period - from 32.4 to 50.3 grains, and in the late (1.11) sowing period - from 30.3 grains. If it was found to be up to 41.3 grains, the grain weight in the spike ranged from 0.73 g to 1.13 g, depending on the sowing dates; 0.72 g and 1.19 g each; 0.67 g to 1.05 g, and the mass of 1000 grains, respectively, from 23 g to 28.7 g; 24.4 g and 30.0 g each; We found that it ranged from 21.5 g to 26.1 g. In general, the structure of the crop, the number of grains per spike, the mass of grain per spike and the timing of sowing per 1000 grains, as well as the combined effect of mineral fertilizers were studied. The most favorable values were obtained in the background of fertilization N180P110K90 in Vakhshskaya 116 and Shalola varieties."Science and innovation" international scientific journal. ISSN: 2181-333