INFLUENCE OF FERTILIZERS ON FORMATION OF GENERATIVE SPHERE OF CRANBERRY PLANTS ON THE RECULTIVATED DEVELOPED PEAT DEPOSIT OF HIGH TYPE

   The article deals with the results of comparative study of the influence of mineral (Basacote Plus 6M) and organic (Ekogum complex, MaKloR (in 5 and 10 % concentrations)) fertilizers on the biometric and bioproductive characteristics of the generative organs of five­year­old plants of early­ripening (Ben Lear) and late-ripening (Stevens) varieties of large­fruited cran-berry in experimental culture on recultivated areas of peat deposits in Smolevichi (Minsk region) and Dokshytsy (Vitebsk region) districts in contrasting weather conditions in the seasons of 2019 and 2020. Significant interregional, genotypic and inter­variant differences in the response of experimental plants to the tested agricultural practices were revealed. In the first year of research (characterized by an increased temperature background and a high level of precipitation), the stimulating effect of fertilizers on the morphometric and production characteristics of cranberry fruits was revealed (most pronounced in the early­maturing variety). The moderately cool and rainy weather of the vegetative season in 2020 contributed to a significant weakening of the influence of the tested agricultural technics on the studied characteristics of cranberry fruits: there was a decrease in the increase in fruit yield compared to previous season (from 3 to 18 times). It is shown that in a two­year cycle of observations in the Smolevichi district, all the tested agricultural technics contributed to an increase in its size with the greatest, and similar in both varieties, the effectiveness applying of Basacote Plus 6M and Ekogum complex. In the Dokshytsy district, along with the mineral one, the most effective was the use of MaKloR (5 % ), which was 1.5 times inferior to it in this regard, in the absence of an impact on the productivity of the late­maturing variety of the Ekogum complex and MaKloR (10 %).

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