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Received: 2007-07-10

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Journal of Zhejiang University SCIENCE B 2007 Vol.8 No.10 P.731-737


Influence of nitrogen and sulfur fertilization on quality of canola (Brassica napus L.) under rainfed conditions

Author(s):  AHMAD G., JAN A., ARIF M., JAN M.T., KHATTAK R.A.

Affiliation(s):  Cereal Crops Research Institute (CCRI), Pirsabak, North West Frontier Province (NWFP) 25000, Pakistan; more

Corresponding email(s):   marifkhan75@yahoo.com

Key Words:  Canola, Nitrogen (N), Sulfur (S), Methods of N application, Quality

AHMAD G., JAN A., ARIF M., JAN M.T., KHATTAK R.A.. Influence of nitrogen and sulfur fertilization on quality of canola (Brassica napus L.) under rainfed conditions[J]. Journal of Zhejiang University Science B, 2007, 8(10): 731-737.

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author="AHMAD G., JAN A., ARIF M., JAN M.T., KHATTAK R.A.",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

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%T Influence of nitrogen and sulfur fertilization on quality of canola (Brassica napus L.) under rainfed conditions
%J Journal of Zhejiang University SCIENCE B
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.B0731

T1 - Influence of nitrogen and sulfur fertilization on quality of canola (Brassica napus L.) under rainfed conditions
A1 - JAN A.
A1 - ARIF M.
A1 - JAN M.T.
J0 - Journal of Zhejiang University Science B
VL - 8
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EP - 737
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2007.B0731

Field experiments were conducted at Cereal Crops Research Institute, Pirsabak, Nowshera, Pakistan, during winter 2003~2004 and 2004~2005 to evaluate the effect of nitrogen and sulfur levels and methods of nitrogen application on canola (Brassica napus L. cv. Bulbul-98) under rainfed conditions. Four levels of S (0, 10, 20, and 30 kg/ha) and three levels of N (40, 60, and 80 kg/ha) and a control treatment with both nutrients at zero level were included in the experiments. Sulfur levels were applied at sowing while N levels were applied by three methods (100% soil application, 90% soil+10% foliar application, and 80% soil +20% foliar application). The experiments were laid out in randomized complete block (RCB) design having four replications. Oil content increased significantly up to 20 kg S/ha but further increase in S level did not enhance oil content. Glucosinolate content increased from 13.6 to 24.6 μmol/g as S rate was increased from 0 to 30 kg/ha. Protein content increased from 22.4% to 23.2% as S rate was increased from 0 to 20 kg/ha. Oil content responded negatively to the increasing N levels. The highest N level resulted in the highest values for protein (23.5%) and glucosinolate (19.9 μmol/g) contents. methods of N application had no significant impact on any parameters under study.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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