Effect of crop geometry and nitrogen on nitrogen uptake, protein yield, oil yield and oil quality of determinate and short-statured genotypes of Ethiopian mustard (Brassica carinata)
DOI:
https://doi.org/10.59797/ija.v64i1.5243Keywords:
Ethiopian mustard, Fatty acid composition, Genotypes, Nitrogen content, N-uptake, Oil, Pro- tein, Spacing, YieldAbstract
A field experiment was carried out during the winter (rabi) seasons of 201314 and 201415 at Ludhiana, Punjab, to study the effect of nitrogen and spacing on N uptake, oil yield, protein yield and oil quality of short- statured, determinate genotypes of Ethiopian mustard (Brassica carinata A. Braun). The experiment was con- ducted in 3 replications in a split-plot design with combination of 3 genotypes (BJC 13-1, BJC 13-2, BJC 13-3) and 4 spacings (25 cm 15 cm, 30 cm 10 cm, 30 cm 15 cm, 45 cm 10 cm) in main plots and 2 doses of N (100 and 125 kg/ha) in subplots. Pooled mean data of two years revealed that different genotypes registered simi- lar seed and stover yields, N content in seed, N uptake in seed, stover as well as total, protein content and oil and protein yields. Genotypes also did not differ in fatty acid composition of oil except oleic acid, eicosenoic acid and erucic acid which were higher in BJC 13-1 compared to BJC13-3. The highest seed and stover yields were ob- tained with 25 cm 15 cm spacing. Spacing of 30 cm 15 cm resulted in significantly more N and protein content in seed and stover, N uptake by stover and total N uptake. Effect of spacing on oil content and yield and oil quality was non-significant. Application of 125 kg/ha of N resulted in significantly more N content in seed and stover, N uptake by seed, stover and total, oil yield, protein content, protein yield and improved oleic acid, linoleic acid, lino- lenic acid and decreased proportion of erucic acid in oil as compared to 100 kg/ha of N.References
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