EFFECT OF SEEDING RATE ON GRAIN YIELD AND ITS COMPONENTS OF BREAD WHEAT CULTIVARS

A. Ibraihi, Mohammed; Baktash, F.Y.

	EFFECT OF SEEDING RATE ON GRAIN YIELD AND ITS COMPONENTS OF BREAD WHEAT CULTIVARS
The Iraqi Journal of Agricultural Science
Article 1, Volume 38, Issue 1, 2007, Pages 65-78
Authors
Mohammed A. Ibraihi; F.Y. Baktash
Abstract
A field experiment was conducted at the field of Crops Science Dept., Coll. of Agric. Univ. of Baghdad , during 2001-2003 seasons. The objective was to study the response of grain yield and yield components of bread wheat cultivars to different seeding rates. The experiment was carried out, using split-plot design with ten cultivars (Tamoz 2 , Tamoz 3, Abu-Ghraib 3 , IPA 95 , IPA 99, Sali, Al-Rashid, Al-Iraq, Fateh and Rabca) as main plots and four seeding rates (80 , 120,240 and 320 kg ha'1) as sub plots. The highest number of spikes /plant was produced, in the first season from the cv. Fateh and IPA 95. While, in the second season it was from the cv. Abu-Ghraib 3, with 320kg ha'1. The cultivars, IPA 99, Tamoz 2, Tamoz 3 and Fateh in the first season and Tamoz 3 in the second season showed higher number of grains/spike, using 80kg ha'1. Al-Iraq cv. produced higher 1000 grains weight (43.47 gm) in the first season. While, in the second season the cultivars, Al-Iraq .Sali, Al-Rashid and Rabea produced higher grain weight using 80kg ha'1 .The higher biomass (17108 and 17400) kg ha1 were, produced from the combination of Sali and Al-Rashid with 320 kg ha'1.The higher harvest index was found from the combination Al-raqX 80kg ha"1 in both seasons. The highest combination of grain yield (4894 and 4867) and (5306 and 5205)kg ha"1, were produced from cultivars Fateh and Al-Iraq , with 240kg/ha , in the first and second seasons, respectively . It was recommended cultivation of Fateh and Al-Iraq cultivars using 240 kg ha'1 seeding rates.

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