Effect of micronutrients applied through leaves in combination with different times and ways of applying phosphorus-potassium fertilizers on yield and quality of grapes

Perovic, N. . Agronomski institut

Effect of micronutrients applied through leaves in combination with different times and ways of applying phosphorus-potassium fertilizers on yield and quality of grapes

1988

Perovic, N. (Agrokombinat 13. jul, Titograd (Yugoslavia). Agronomski institut)

In a four-year factor field trial (2 x 2 x 7) established in conditions of highly skeleton carbonate soil poorly provided with available B and Mn and moderately provided with Cu and Zn, the effect of foliar top-dressing of grape-vine with solutions of these micronutrients, the time and way of applying PK-fertilizer has been studied as well as the interactions of these factors on the yield and quality of grapes. It was found out that twice applied micronutrients and spring application of PK-fertilizer contributed to achieving higher yields of grapes with increased sugar contents in grape juice accompanied by decreased total acid contents.

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