Effect of foliar fertilization under stress conditions on two soybean varieties from different maturity groups

Abstract

The aim of investigation was to estimate the effects of foliar feeding under stress conditions on the grain yield in two soybean varieties (Laura and Lana). Studied varieties belong to different maturity groups (Laura is within the group I, while Lana is within the group II) and they both have reduced content of Kunitz trypsin inhibitor (KTI). Two foliar fertilizers were applied in experiment: Humikal univerzal i Ferticare I. Field trails were carried out in dry land farming, at location Surduk, during years 2002 and 2003. Method of foliar feeding has been proved as an effective tool for increasing of grain yield in both varieties. Variety Lana was more productive in more favorable year 2002. Variety Laura, with shorter vegetation period, produced higher grain yield then variety Lana, in more arid year 2003. It was also observed that foliar fertilization contributed to grain yield stability in variety Laura.

Cilj istraživanja bio je da se odredi uticaj folijarne prihrane u stresnim uslovima na prinos zrna dve sorte soje (Laura i Lana). Ispitivane sorte soje pripadaju različitim grupama zrenja (Laura - I i Lana - II) i imaju smanjeni sadržaj Kunitz tripsin inhibitora (KTI). Za tretiranje su korišćena dva folijarna hraniva (Humikal univerzal i Ferticare I). Ogled je izveden u suvom ratarenju, na lokaciji Surduk, tokom 2002. i 2003. godine. Folijarna prihrana pokazala se kao uspešan metod za poboljšanje prinosa zrna kod obe sorte u obe godine. Sorta Lana ispoljila je veću produktivnost u povoljnijoj 2002. godini. Sorta Laura, sa kraćim periodom vegetacije, obrazovala je veći prinos zrna nego sorta Lana u sušnoj 2003. godini. Folijarna prihrana doprinela je stabilnosti prinosa zrna sorte Laura.