Yield of pear plantations depending on optimised mineral nutrition

Abstract

Thus, the highest yields of both experimental pear varieties Conference and Osnovyanska were provided by fertilisation with additional application of N30 and N30K30 to the calculated norms of nitrogen and potassium fertilisers (background), respectively, 27 and 31 and 37 and 36% higher than from unfertilised trees and by 1 and 5 and 7 and 6% - from fertilised trees with annual application of N90P60K90, where there was a less balanced ratio of nitrogen, phosphorus and potassium in the nutrition of fruit trees, although the total amount of fertiliser was higher.