PLANT WATER SUPPLY OF LAYERED ALLUVIAL SOILS UNDER DIFFERENT WEATHER CONDITIONS

Plant water supply of different crops in drought and normal weather years in the alluvial plain of the Szigetköz area is studied. Monthly precipitation sum, ground water table course, non-limited plant available soil water storage of three different soil varieties are evaluated considering the crop water demand. initiates about According to model calculations 2 mm daily water flux to the root zone for soils studied occurs at about 120 and 150 cm ground water table depth. It means that crop water supply is not highly dependent on the amount and distribution of precipitation in case of high ground water table course.. The non-limited available soil moisture storage proved to be suitable for judging the actual plant water supply.