Wpływ wysokości opadów atmosferycznych i liczby dni z opadem na plonowanie jęczmienia jarego uprawianego w warunkach gleby lessowej

Yielding of spring barley against the background of precipitation sum and number of days with precipitation in the distinguished development stages was analysed in the work. The modelling method used allowed to determine optimal precipitation amount and number of days with precipitation for its cultivation on loess soil. In the critical period from heading to maturity the water demand was the highest mainly in the precipitation rank from 1,1 to 5.0 mm. It was stated that precipitation amount did not limit the yield, in the investigated region a small surplus was observed. The modelling method used in the work allows to assessment of plant water demand and allows to detemine expected yield height.