Influence of nitrogen and sulfur on seed yield and quality of hybrid canola
Nitrogen and sulfur are the key nutrients required for oilseeds owing to their important role in plant metabolic processes. An experiment was conducted to study the response of these nutrients on the seed yield and quality of canola hybrid Hyola PAC 401 during winter 2004-05. Nitrogen (100, 125 art 150 kg/ha) was applied in two splits half at sowing and remaining after first irrigation. Sulfur (20, 40 and 60 kg/ha) was applied at time of sowing. Phosphorus was applied @ 30 kg P2O5/ha at sowing in all treatments. Application of 125 kg N/ha resulted in 6.3 per cent higher seed yield over 100 kg N/ha (1 517 kg/ha). Further increase in N was inconsequential. Response of S was discernible up to 40 kg/ha where it resulted in 19.4 per cent higher seed yield than application of 20 kg S/ha (1389 kg/ha). Combined application of 125 kg N + 40 kg S/ha resulted in 28.9 per cent higher seed yield (1708 kg/ha) as compared to application of 100 kg N + 20 kg S/ha. Varied doses of N failed to significantly alter fatty acid profile;however, glucosinolates content decreased from 14.6 μmole/g defatted seed meal with 100 kg N/ha to 12.9 μmole/g defatted seed meal with 125 kg N/ha and leveled off following further increase in N. Glucosinolate content with 40 or 60 kg S/ha (12.5 μmole/g defatted seed meal) was lower than that registered with 20 kg S/ha (153 μmole/g defatted seed meal). Glucosinolate content increased with increasing dose of S from 20 to 60 kg/ha with application of 100 kg N/ha but it decreased when dose of N was also increased to 125 or 150 kg/ha. Thus, balanced application of N and S leads to higher seed yield and better quality of seed meal.
Oilseed rape Brassica napus canola nitrogen sulfur yield quality
Virender Sardana A.K.Atwal
Department of Plant Breeding, Genetics and Biotechnology.Punjab Agricultural University Ludhiana - 141 004, India
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1070-1072
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）