ASSESSMENT OF THE BIOLOGICAL AND ECONOMIC EFFICIENCY OF FUNGICIDES AGAINST EARLY BLIGHT OF POTATO IN THE CONDITIONS OF KARAGANDA REGION

Abstract

In this article the results of the fungicides test against Early blight of potato is described. There were used fungicides with different active substances (mancozeb + dimethomorph; pyraclostrobin + boscalid) against Early blight of potato variety Udacha grown in a moderately arid warm hilly-plain steppe zone of Central Kazakhstan, in a subzone of dark chestnut soils of “Naydorovskoe LLP”. The features of the defeat and intensity of the defeat of potatoes by alternariosis in the growing season of 2019 are shown. Probable species of the genus Alternaria have been identified in potato plantings. The biological and economic efficiency of fungicides was determined, yield increases were revealed with single and double application of fungicide