The influence of row spacing on fertile node number of soybean under irrigation conditions

Abstract

Three row spacings and three soybean cultivars were examined under irrigation conditions during a two-year study. The objective was to determine the influence of row spacing changes on fertile node number of soybean. The analysis of variance was performed on data following a two-factorial split-plot design , with cultivar and row spacing as main plot and subplot factors, respectively (Hadzivukovic 1991). The number of nodes with pods present was significantly dependent on maturity group. The late cultivar was determined to have a significantly greater number of nodes with pods (1.95 to 2.78), as compared to the early and medium maturity cultivars. An increase in row spacing resulted in an increasing number of fertility nodes (12.05, 12.37, and 13.51). A positive correlation was established between yield per plant and fertile node number.

U dvogodišnjem istraživanju ispitivana su tri međuredna razmaka i tri sorte soje različite grupe zrenja u uslovima navodnjavanja. Cilj je bio da se ustanovi u kojoj meri promena međurednog razmaka utiče na broj plodnih nodija kod soje. Podaci su obrađeni analizom varijanse po metodi dvofaktorijalnog split - plot ogleda, gde su faktori ispitivanja: sorta (velika parcela) i međuredni razmak (podparcela) (Hadživuković 1991). Broj nodija s mahunama bio je značajno zavisan od grupe zrenja. Kasana sorta, imala je značajno veći broj nodija s mahunama (1.95 do 2.78) u odnosu na ranu i srednjestasnu sortu. Povećanjem međurednog razmaka setve dolazilo je do povećanja nodija sa mahunama (12.05, 12.37, 13.51). Utvrđena je pozitivna korelacija između prinosa po biljci i broja plodnih nodija.