The effect of nitrogen foliar application at different growth stages on grain yield and yield components of two Wheat cultivars
Subject Areas : Crop Production Research
1 - Department of Agronomy, Islamic Azad University, Qhaemshahr Branch
Keywords: Foliar application of nitrogen, Grain yield, Wheat,
Abstract :
In order to investigate the effect of nitrogen foliar application at different growth stages on grain yield and yield components of two Wheat cultivars, a factorial experiment was conducted based on completely randomized block design with eight treatments in four replications at Qarakhil Agricultural Research Station. The factors tested included two wheat cultivars, N80 - 19 and the promising line Darya, and the foliar application treatments included foliar application at tillering stage, foliar application at the stem-growing stage, foliar application at early pollination, and foliar application at the grain filling stage. The results showed that plant height and panicle length were affected by the cultivar and foliar application stages. The grain yield and harvest index of Darya cultivar were 4908.25 kg/ha and 32.34% lower than those of N-80-19 cultivar, respectively. Foliar application at the grain filling stage resulted in maximum grain yield and harvest index. Grain protein yield in the N-80-19 cultivar was higher than that of the Omid Bakhsh Darya line, and foliar application at the grain filling stage resulted in the highest grain protein and grain yield.
