STUDIES REGARDING THE INFLUENCE OF IRRIGATION ON FRUIT YIELD AT APPLE TREES IN IARA – TURDA, TRANSYLVANIA CONDITIONS

Abstract. The paper presents the results of the experiments that were carried out during 2012-2014 period, in the Iara-Turda depressionary area conditions. The research`s general objective is the study of agroproductivity at Jonagold, Florina, Generos, Idared, Jonathan, Granny Smith and Golden Delicious apple varieties, all grafted on to a semi-vigourous M106 rootstock. The influence of the irrigation and fertilization regime was studied in an polifactorial experiment that aimed the study of the interactions of three factors and the specific and cumulative effects on growth and fructification parameters of the apple tree varieties in the pedoclimatic context of the studied area. The present paper refers only to the interaction and effect of the irrigation regime in relation to the studied factors