[Influence of mineral nutrition on the elements structure of the highbush blueberry fruits at introduction in southern areas of Belarus]
2004
Pyatnitsa, F.S. | Rupasova, Z.A. | Ruban, N.N. | Matiushevskaya, E.N. | Rudakovskaya, R.N.(Central Botanical Garden, Minsk (Belarus))
In a field experiment the accumulation parameters of 5 macro- (N, P, K, Ca, MG) and 6 micro- (Fe, Mn, Zn, Cu) elements in fruitage of early-, medium- and late-ripening varieties of blueberry were studied according to 8 variants of schemes of mineral fertilizers: 1 - control without fertilizers2 - N603 - P604- K605 - N60P606 - N60K607 - P60K608 - N60P60K60 on soddy-podzolized sandy soil cultured in a medium degree in southern part of Brest district. The lowest content of P, Ca and Mn was eastablished for the fruits of a late-ripening variety. No substantial cultivar differences in accumulation of other elements were found. K among macroelements and Mn among microelements were characterised with the greatest stability of accumulation level in blueberry fruits. The most expressed stability to the edaphic factor was established for the accumulation in fruits of K, Mg, Fe in early-ripening cultivarsP, Ca, Zn in cultivars of medium ripening term and N, Mn, Cu in late-ripening cultivars. It was established, that formation of element structure of blueberry fruits of early-ripening variety at entering of mineral fertilizers proceeds on a background of antagonistic interrelations between N, P, K, on the one hand, and Ca, Mg and microelements on another, with the presence of expressed synergism between the majority of them in medium- and especially late-ripening cultivars that results in the appreciable enrichment of fruits with nutrients
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