INFLUENCE OF MANGANESE FERTILIZER ON GRAPES EFFICIENCY ON SANDY SOILS OF THE SOUTH RUSSIA

Abstract

As a result of the studies, there has been obtained a new information aboutmanganese influence on productivity of grape plantations on sandy soils of theSouth Russia. Manganese fertilizing of 4 kg active ingredient per 1 ha on thebackground addition of nitrogen 90 kg ha-1, phosphorus 90 kg ha-1 and potassium90 kg ha-1 into a phase of grape sap flow contributes to higher yields and increasethe sugar content of the berries with a significant decrease in juice acidity ascompared with other variants. On determining the average weight of the fruit massthere has been found that manganese stimulates growth of berries significantlyincreasing their weight. The greatest effect of manganese fertilizer insertion isachieved on introducing it into the phase of sap flow at a dose of 4 kg ha-1 on thebackground of N90, К90, Р90. In order to expedite the recovery of vineyardsdamaged by frosts to enhance the development of reproductive organs 4 kg ha-1manganese into the phase of sap flow must be introduced on sandy soils.