ASSESSMENT OF THE IMPACT OF DRIP-SPRINKLER IRRIGATION AND IMPULSE SPRINKLING TECHNOLOGIES ON GROWTH, DEVELOPMENT AND PRODUCTIVITY OF APPLE TREES IN THE SOUTH OF KAZAKHSTAN

In the Republic of Kazakhstan, as well as in many countries located in the arid zone, ag-riculture is fundamental in economic development. Increasing water deficit requires reduction of water consumption in irrigated agriculture through introduction of technologies providing optimal conditions for growth and development of agricultural crops. Drip irrigation and sprinkling are promising technologies for optimizing the conditions for plant development. Drip-sprinkler irrigation technology is aimed at increasing of irrigation water use effi-ciency under the main drip irrigation method and during high air temperatures (more than 25oC) to improve micro- and phytoclimate parameters in the period of additional sprinkling irrigation. Impulse sprinkling improves the microclimate in the apple-trees development environment, water regime indicators of plants within day time in comparison with periodical regular sprinkling and increases the productivity of apple-trees.