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Effect of different rates of nitrogen fertilizer on growth, seed yield, yield components and quality of canola (Brassica napus L.) under arid environment of Saudi Arabia

Samir G. Al-Solaimani, Fahad Alghabari, Muhammad Zahid Ihsan

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Int. J. Agron. Agri. Res.7(2), 1-7, August 2015

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IJAAR 2015 [Generate Certificate]

Abstract

Canola (Brassica napus L.) was planted for two consecutive seasons (2004-05 and 2005-06) in the Arid Land Agricultural Research Station, King Abdul Aziz University at Hada Al-Sham to determine the effect of different rates of nitrogen fertilizer (0, 60, 120 and 180 kg N/ha) on crop growth, seed yield, yield components and seed quality. Nitrogen was applied in three equal splits, 2 weeks, 4 weeks and 8 weeks after planting during each crop season. Randomized complete block design, with four replications was used. Statistical analysis of the obtained data presented that nitrogen at a rate of 180 kg N/ha dominated other N rates of 120, 60, 0 kg N/ha for plant growth, yield and quality parameters except seed oil content that were higher at 120 Kg N/ha level. An overall improvement of 59% in plant height, 112% in number of branches, 111% in number of fruits/plant, 87% in 1000 seed weights and 19% in crude protein content were documented for 180 Kg N/ha. On contrary a reduction of 5% in oil content was recorded by moving from 120 Kg N/ha to 180 Kg N/ha. Current results suggested that N at a rate of 180 Kg/ha can be adopted as best level of nitrogen fertilizer for canola cultivation under arid land conditions of Saudi Arabia.

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Effect of different rates of nitrogen fertilizer on growth, seed yield, yield components and quality of canola (Brassica napus L.) under arid environment of Saudi Arabia

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