Effect of foliar fertilization on soybean grain yield

Abstract

The aim of this investigation was to estimate the effects of foliar fertilization on quantitative traits (plant height, first pod height, number of nodes per plant, number of pods per plant, number of grain per plant, grain yield per plant, 1000-grain weight and grain yield) in two soybean cultivars (Balkan and Bečejka). Studied cultivars belong to different maturity groups (Balkan - I and Bečejka - 0). Four treatments of fertilization were tested: control (no fertilization), Urea (46 kg N ha-1), Urea (46 kg N ha-1) + Wuxal super (5 l ha-1) and Urea (46 kg N ha-1) + Ferticare I (5 kg ha-1). Wuxal super and Ferticare I were foliar applied two times at the R2-R3 growth stage. The field experiments were carried out in dry land farming in the region of Vojvodina province at location Putinci (45° 00' N Lat., 19° 58' E Long.), during the years 2007 and 2008. In both research years, Balkan had higher values for all investigated traits than Bečejka. Results showed that foliar fertilizers significantly increased the values for all quantitative traits. Ferticare I is more effective than Wuxal super in soybean because this fertilizer has higher concentration of macronutrients. Foliar fertilization of soybean reduced the negative impact of small amounts of rainfall during the summer months on grain yield.

Cilj istraživanja je bio da se oceni efekat folijarne ishrane na kvantitativne osobine (visina biljke, visine prve mahune, broj nodusa po biljci, broj mahuna po biljci, broj zrna po biljci, prinos zrna po biljci, masa 1000 zrna i prinos zrna) dve sorte soje (Balkan i Bečejka). Ispitivane sorte pripadaju različitim grupama zrenja (Balkan - I, Bečejka - 0). Upoređivane su četiri tretmana ishrane biljaka: kontrola, Urea (46 kg N ha-1), Urea (46 kg N ha-1) + Wuxal super (5 l ha-1) i Urea (100 kg ha- 1) + Ferticare I (5 kg ha-1). Wuxal super i Ferticare I primenjeni su folijarno u R2- R3 fazi rastenja i razvića soje. Ogledi su izvedeni u suvom ratarenju u Vojvodini na lokaciji Putinci (45° 00' SGŠ, 19° 58' IGD) tokom 2007. i 2008. godine. U obe godine istraživanja sorta Balkan je imala veće vrednosti za sve ispitivane osobine nego Bečejka. Rezultati su pokazali da je folijarna ishrana značajno povećala vrednosti svih ispitivanih kvantitativnih osobina. Viši prinosi postignuti su primenom Ferticare I nego primenom Wuxal super jer sadrži veću koncentraciju makroelemenata. Folijarno prihranjivanje soje umanjilo je negativan uticaj malih količina padavina tokom letnjih meseci na prinos zrna.