Rate of nitrogen and sulphur fertilizers on yield, yield components and seed quality of oilseed rape (Brassica napus L.)

Asare, E.; Scarisbrick, D. H.

doi:10.1016/0378-4290(95)00051-7

Cited by 108 publications

(79 citation statements)

References 11 publications

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“…It has been reported by several researchers that combined application of S and N enhances the oil and protein contents of the seeds of Brassica genotypes (McGrath and Zhao, 1996). Likewise, Zhao et al(1993), Dubey et al(1994), Asare and Scarisbrick (1995) and Cheema et al(2001) reported low oil content with higher doses of N. However, Brennan et al(2000) reported that the oil concentration of canola seed remained unaffected by N rate. Several reasons have been given by different researchers for the decrease in oil content with increasing N rates.…”

Section: Oil Contentmentioning

confidence: 80%

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

Gholami¹,

Jan

Arif

et al. 2007

J. Zhejiang Univ. - Sci. B

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Abstract: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.

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Section: Oil Contentmentioning

confidence: 80%

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

Gholami¹,

Jan

Arif

et al. 2007

J. Zhejiang Univ. - Sci. B

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“…Earlier research has reported interactions between N and S fertilizers on seed yield for Brassica species (Aulakh et al 1980;Asare and Scarisbrick 1995;Ahmad et al 1999;Jackson 2000). In a pot study under controlled conditions in Saskatchewan, rapeseed (Brassica napus L.) yield decreased when N was applied to S-deficient soils (Janzen and Bettany 1984).…”

mentioning

confidence: 99%

Interactive effects of N and S fertilizers on canola yield and seed quality on S-deficient Gray Luvisol soils in northeastern Saskatchewan

Malhi¹,

Gill²

2007

Can. J. Plant Sci.

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Malhi, S. S. and Gill, K. S. 2007. Interactive effects of N and S fertilizers on canola yield and seed quality on S-deficient Gray Luvisol soils in northeastern Saskatchewan. Can. J. Plant Sci. 87: 211-222. On marginally S-deficient soils in the Parkland region, application of high rates of N and other fertilizers in combination with more frequent production of canola (Brassica napus L. or B. rapa L.) causes rapid depletion of S and nutrient imbalance in soil, and S deficiency and yield reduction for canola. Field experiments on Gray Luvisol (Boralfs) soils deficient in available N and S were conducted in northeastern Saskatchewan. Interactive effects of N (0, 50 100 and 150 kg N ha -1 ) and S (0, 10, 20 and 30 kg S ha -1 ) rates on yield, seed quality, and uptake of S and N in canola were determined. In the absence of S application, increasing N rate made the S deficiency symptoms more severe, and reduced yield, S concentration, oil concentration, S uptake and N uptake of seed, but there was a general response of no effect or some increase in protein concentration, S and N uptake in straw up to 50 or 100 kg N ha -1 . When S was applied, canola yield, S concentration, S uptake and N uptake of seed as well as the yield and S uptake of straw increased with increasing N rate. Irrespective of S rate, fertilizer N reduced oil concentration and increased protein concentration in canola seed. With S fertilization, yield, S uptake and N uptake of seed and straw, and total S concentration and oil concentration in seed were substantially increased, whereas there was no consistent change in protein concentration of seed. The response of these parameters to S application was generally greater at higher N rates. Sulphur and N uptake measured data indicated that significant N × S interaction effects were more frequent and pronounced for seed yield than for straw yield, indicating that the response to N rate was relatively more dependent on the S level for seed than for straw. In summary, the results suggest that an increased amount of S is needed on these S-deficient Gray Luvisol soils in northeastern Saskatchewan to adequately meet the S requirements at high N rates for optimum yield and quality of canola. On note aussi une baisse du rendement, de la concentration de S, de la teneur en huile et de l'absorption de S et de N par la semence, mais la concentration de protéines et l'absorption de N et de S par la paille ne sont généralement pas touchées, ou alors augmentent très légèrement jusqu'au taux de 50 ou de 100 kg de N par hectare. Quand on applique un engrais S, l'augmentation du taux d'application des engrais N s'accompagne d'une hausse du rendement du canola, de la concentration de S, de l'absorption de N et de S par la graine ainsi que du rendement en paille et de l'absorption de S par celle-ci. Peu importe la quantité de S appliquée, les engrais N réduisent la teneur en huile et accroissent la concentration de protéines dans la graine. Les engrais S augmentent sensiblement le rendement, l'absorption de S et de N par ...

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“…This observation may account for the increase in Toc content of seeds from N3-treated plants compared with those from plants treated with low rates of N in the current study. Increased N application rate was also found to be correlated with increased protein accumulation and concentration in canola seeds (Asare and Scarisbrick, 1995;Grant et al, 2002;Lemke et al, 2009). Furthermore, pot experiments used in nutrient studies, especially those involving N treatments, should be given preference compared with field research for evaluating genotypic performance.…”

mentioning

confidence: 99%

Response of seed tocopherols in oilseed rape to nitrogen fertilizer sources and application rates

Hussain

Jiang

Jabeen

et al. 2014

J. Zhejiang Univ. Sci. B

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Tocopherols (Tocs) are vital scavengers of reactive oxygen species (ROS) and important seed oil quality indicators. Nitrogen (N) is one of the most important fertilizers in promoting biomass and grain yield in crop production. However, the effect of different sources and application rates of N on seed Toc contents in oilseed rape is poorly understood. In this study, pot trials were conducted to evaluate the effect of two sources of N fertilizer (urea and ammonium nitrate). Each source was applied to five oilseed rape genotypes (Zheshuang 72, Jiu-Er-1358, Zheshuang 758, Shiralee, and Pakola) at three different application rates (0.41 g/pot (N1), 0.81 g/pot (N2), and 1.20 g/pot (N3)). Results indicated that urea increased α-, γ-, and total Toc (T-Toc) more than did ammonium nitrate. N3 was proven as the most efficient application rate, which yielded high contents of γ-Toc and T-Toc. Highly significant correlations were observed between Toc isomers, T-Toc, and α-/γ-Toc ratio. These results clearly demonstrate that N sources and application rates significantly affect seed Toc contents in oilseed rape.

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Rate of nitrogen and sulphur fertilizers on yield, yield components and seed quality of oilseed rape (Brassica napus L.)

Cited by 108 publications

References 11 publications

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

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

Interactive effects of N and S fertilizers on canola yield and seed quality on S-deficient Gray Luvisol soils in northeastern Saskatchewan

Response of seed tocopherols in oilseed rape to nitrogen fertilizer sources and application rates

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