RESPONSE OF SORGHUM TO NITROGEN FERTILIZER

M.S. Addaheri, A.; N. A. Al-sadoon, S.

	RESPONSE OF SORGHUM TO NITROGEN FERTILIZER
The Iraqi Journal of Agricultural Science
Article 1, Volume 42, Issue 4, 2011, Pages 17-31
Authors
A. M.S. Addaheri; S. N. A. Al-sadoon
Abstract
A field experiment was conducted in two seasons (spring and fall 2009) in a silty loam soil, in Anbar-governorate, to investigate the effect of four nitrogen fertilizer levels 0, 100, 200and300 kgN.ha-1on growth, yield and nitrogen use efficiency (NUE) of three sorghum cultivars (Rabeh, Inkath and Kaffer). Factorial arrangement was used according to the randomized complete block design with three replications. Inkath cultivar showed the longest period from mid-bloom to maturity(27.92 ,34.00 dais), highest grain yield(6.17, 6.47 t.ha-1) in spring and fall respectively. rabeh cultivar showed the highest (NUE) for the dry matter(11.15, 28.39 kg.kgN-1) in spring and fall respectively. The level of N fertilizer (300 kgN.ha-1) gave the highest total dry matter(15.82, 19.60t.ha-1); 200 kgN.ha-1 gave the highest grain yield(6.24, 6.57 t.ha-1); 100 kgN.ha-1 showed the highest (NUE) for the dry matter(11.86, 28.73kg.kgN-1) and (NUE) for the grain(7.60, 7.84 kg.kgN-1) in spring and fall respectively. Inkath cultivar produced the highest grain yield at 300 kgN.ha-1 in spring(6.83 t.ha-1), at 200 kgN.ha-1 in fall (6.91 t.ha-1), it showed the highest (NUE) for the grain at 100 kgN.ha-1(8.47, 8.40 kg.kgN-1) in spring and fall respectively. the conclusion, Inkath the best cultivar for grain, (NUE) decreased with increasing of N fertilizer level, Under the experiment circumstances.

Statistics Article View: 170 PDF Download: 19