Petrenko S. Physiological-biochemical processes and the productivity of potatoes depending on the application of microbiological preparations and their common action with mineral fertilizers on the black soils of the Central Forest-Steppe

Object of investigation - the growth and development of potato plants of earlyriping variety Povin and middle-late variety Olvia, the formation of elements of the harvest of tubers and their guality. Aim of investigation - study of physiological and biochemical reactions of potatoe plants of Povin and Olvia varieties and the action of agroecological factors, the microbiological preparations diazofit and phosforoenterin separately and in complex with optimal and increased norms of mineral fertilizers on the black soils of Central Forest-Steppe of Ukraine. Methods of investigation - field, laboratory-chemical, tasting, mathematics-statistic, calculation-comparative. Theoretical and practical results - the production should widely grow potatoes of new varieties earlyriping Povin and middle-late Olvia. To increase the harvest of potatoes it is reasonable to polish the planting tubers with microbiological preparations diazofit and phosforoenterin in the proportion 100 ml for the norm to be planted on one hectare. To receive the high harvest on the level of 30-40 t/h with the proper guality of tubers of the recommended varieties with a positive reaction on the application of high agrochemical background, it is necessary to apply mineral fertilizers in the proportion N120P120K120, which will let icrease considerably the potential productivity of potatoes. The processing of planting tubers with the microbiological preparations diazofit and phosforoenterin in the form of hel is reasonable only with the norm of mineral fertilizers N60P60K60. The higher norms of mineral fertilizers to polish the tubers with these preparations are not effective. Novelty - for the first time the effectiveness of application of microbiological preparations diazofit and phosforoenterin for growing potatoes in the Central Forest-Steppe of Ukraine is proved. The norms of mineral fertilizers and microbiological preparations close to optimal are classified. Level of introduction - the results of the experiments are introduced into production on the area of 20 hectares.