Definition of humidification circuit parameters for drip irrigation

¹ Russian Scientific Research Institute of Hydraulic Engineering and Melioration named after A.N. Kostyakov, 127550 Moscow, Russian Federation
² Department of Land Reclamation and Construction Machines, Russian State Agrarian University, Moscow Agricultural Academy named after K.A. Timiryazev, 127550 Moscow, Russian Federation

^* Corresponding author: yourim2@rambler.ru

Abstract

During recent years, there was a steady growth in the gross harvest of potatoes in Moscow region, production capacities for processing of agricultural crop have been also increasing. However, based on 2020 results, the yield is still highly dependent on weather conditions and, in particular, on the amount of precipitation during the growing period. Therefore, in order to obtain sustainable yields, it is necessary to maintain the optimal values of the water-air balance, that consider conduction of agromeliorative measures, including additional irrigation. The most economical is drip irrigation among the moisturizing activities. It allows to deliver irrigation water directly to the root zone. This will significantly reduce the cost of water and electricity; however, the maximum benefits of drip irrigation may be obtained by revise and calculation of the irrigation rates. Suggested irrigation rates do not take into account the elliptical shape of the humidification contour, which leads to overestimated rates for it. The method for calculating the irrigation rate proposed in the article, takes into account the shape of the humidification contour that enables to use irrigation water wisely.