Effect of Distances Between Lines and Levels of Nitrogen Fertilizer on Yield and Quality Characteristics of Wheat

Abstract

In the winter of 2021-2022, researchers in Al-Muthanna used a randomized complete sector design (RCBD) and three replicates of split plots to examine the impact of four levels of nitrogen (250, 200, 150, 100) kg N ha-1 and four planting distances between the lines (30,25,20,15) cm on the characteristics of Yield for wheat. The primary plots concerned themselves with nitrogen concentrations, while the subsidiary plots measured line spacing (Sup-plot). On average, the number of spikes per hectare, the number of grains per hectare, the total yield per hectare, the biological yield per hectare, and the percentage of protein in the grains were all found to be highest at the 250 kg N ha-1 fertilizer level. While the distance of 30 cm was significantly superior to the highest mean of biological yield and in the percentage of protein in the grains (it yielded an average of 6.90 tons ha-1 and 8.331%, respectively), the agricultural distances did not show any significant superiority in most of the traits studied. The statistical analysis revealed a substantial interaction between the two experimental conditions in some of the features under investigation. When compared to the maximum average number of spikes, which peaked at 399.7 spikes m-2, the overlap (250 kg N ha-1×15 cm) was superior. Combination (250 kg N ha-1 × 30 cm) had highest average biological yield of 9.19 tons ha-1, however the interaction did not show any significant effect on most of the studied traits, such as the number of grains in a spike, the weight of 1000 grains, or the percentage of protein.