Influenţa fertilizărilor foliare asupra creşterii şi productivităţii mărului

Abstract

This paper presents the results of foliage fertilization with N in a plantation of apple trees placed in „Alfa - Nistru” JSC. As a biological material served two apple varieties: Pinova and Gala Must with Slender Spindle trimmed crown grafted on M9, planted on a distance of 3,5 x 1,2 m (2380 trees/ha). Our aim in these studies was to establish the optimum formula of foliage fertilization with N which favorably influenced some physiological processes of apple trees. The obtained results showed that during 2005 - 2007 the yield increased significantly with 29 % at Gala Must and with 28 % at Pinova variety, applying the foliage fertilization in a concentration of 1,2 % N. The productivity of Pinova and Gala Must variety respectively was 43,8 t/ha and 47,0 t/ha