Determining need of water for potatoes in the village of Vaka, Khashuri district, taking into account agro-climatic features.

The correct selection of agro-meteorological factors, irrigation techniques, regime is important for obtaining a quality harvest of potato culture, taking into account the current global climate change. Water is one of the main, manageable, priority units of the basic factors necessary for normal plant growth and development. Consideration of evapotranspiration is an important factor in determining plant water requirements and water supply. The Penman-Monteith method recommended by FAO is important for determining evapotranspiration. Knowledge of environmental factors and their practical use from an agrobiological point of view is important for normal plant growth and development. The selection of existing, used, less used and unutilized soil water-aerial regime, based on scientific foundations, ensures the increase of soil fertility. The economical and efficient use of existing water resources is directly related to the operation of irrigation systems and the correct design. During the experiment period, the evapotranspiration coefficient is determined for the water requirements of potato culture, taking into account the agroclimatic characteristics. Based on the relevance of the article, it is necessary to effectively use the agroclimatic resources of the Shida Kartli region, the hydrophysical indicators of the soil, to correctly determine the water requirements of the plant taking into account the evapotranspiration. For the first time in the village of Vaqa of Khashuri Municipality, the norm, terms and water requirements of potato crop irrigation were determined, which are significantly different from the existing ones. The municipalities of Khashuri and Kareli of Shida Kartli region are supplied with irrigation water through the Tashiskar canal, the water capacity of which is 15 m3/s. With the given water debit, it is possible to simultaneously irrigate 3 times more agricultural fields, which ensures a uniform, high-quality and abundant harvest. The obtained research results can be used in project organizations and agro-technical objects of agriculture. Tab. 3, Fig. 10, Ref. 8.