OPTIMIZATION OF THE MINERAL NUTRITION OF SUGAR CORN UNDER CONDITIONS OF THE FOOTHILLA ZONE OF THE KBR

Abstract

We have carried out work to study the effect of various doses of mineral fertilizers on such processes as the growth and development of sweet corn under the conditions of the KBR. Undoubtedly, mineral fertilizers have a beneficial effect on the productivity of sweet corn and improve the quality of grain. Their analysis showed the need to use mineral fertilizers to obtain high stable yields of high-quality sweet corn. In the study, we studied sweet corn hybrids Kuban sugar 210, Lakomka Belogoriya, Krasnodar sugar 250 CB F1 and the use of various doses of mineral fertilizers in the following options: 1. Control, without fertilizers; 2.N45P45K45; 3.N90P90K45; 4.N135P135K45; 5.N135P90K45; 6.N45P45 + manure 25 tons. In our experiments, the highest grain yield was achieved in the Lakomka Belogorya hybrid in the variant when N135P90K45 was introduced into the soil. The same advantage is preserved in the hybrid Kuban sakharny 210. And in Krasnodar sakharny 250 CB F1, the option with the use of N45P45 + 30 tons of manure gives some advantage over other options. In the experiments, the percentage of proteins, sugar, starch was also determined. The data in Table 2 show that with increasing doses of mineral fertilizers, especially nitrogen, as a rule, the protein content increased by 30% compared with the control. With an increase in the background of mineral nutrition to N135P135K45, the content of sugars and starch in the grain increased. However, further increase in the level of mineral nutrition did not give significant results. The improvement in quality characteristics is insignificant. The difference between the doses (N135P90K45) and (N135P135K45) of the content of proteins, sugars and starch in the grain for the studied hybrids was 0.1%, 0.1%, 0.3%. From an economic point of view, it justifies itself more and we should stop at the N135P90K45 option.