Effect of Row Spacing and Nitrogen Rate on Wheat Growth and Yield.

A field experiment was carried out at the research station of the College of Agriculture, university of Al-Muthanna in winter 2021-2022 to study the effect of four levels of nitrogen (250, 200, 150, 100) kg N ha^-1 and four Row Spacing (30, 25, 20, 15). (cm) on Wheat Growth and Yield. The results a significant superiority of the fertilizer rate 250 kg N ha-1 in plant height, leaf area, number of tillers, and nitrogen concentration, with means of 90.5 cm, 32.3 cm ² , 323.3 leaves m^-2, and 2.94%, respectively. The row spacing of 30 cm showed a significant superiority for the characteristic of the number of tillers, which reached to 319.5 tillers m^-2, while the The row spacing did not show any significant superiority in most of the studied traits plant height, number of days from planting to flowering, number of days from flowering to maturity, leaf area of the plant, nitrogen concentration). [ABSTRACT FROM AUTHOR]