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Accueil du site → Doctorat → Inde → 2003 → Studies on phosphorus and sulphur nutrition in association with farmyard manure in mustard [Brassica juncea (L.) Czern and Coss] in arid Western Rajasthan

Rajasthan Agricultural University (2003)

Studies on phosphorus and sulphur nutrition in association with farmyard manure in mustard [Brassica juncea (L.) Czern and Coss] in arid Western Rajasthan

Jat, Ram Lal

Titre : Studies on phosphorus and sulphur nutrition in association with farmyard manure in mustard [Brassica juncea (L.) Czern and Coss] in arid Western Rajasthan

Auteur : Jat, Ram Lal

Université de soutenance : Rajasthan Agricultural University

Grade : Doctor of Philosophy (PhD) 2003

Résumé présenté dans KrishiPrabha (Indian Agricultural Doctoral Dissertations Repository)

The field experiment entitled Studies on Phosphorus and Sulphur Nutrition in Association with Farmyard Manure in Mustard [Brassica juncea (L.) Czern and Coss] in Arid Western Rajasthan was conducted at the farm of College of Agriculture, Bikaner during rabi seasons of 2000-01 and 2001-02. The soil of the experimental field was loamy sand in texture containing available 113.2 kg N, 11.94 kg P205, 199.29 kg K20 kg ha and 9.89 ppm in 0-30 cm soil depth with pH 8.15 and 0.08 per cent organic carbon content. The experiment was laid out in split plot design with 3 replications, assigning 8 combinations of 2 levels of farmyard manure (control and 10 t FYM ha) and 4 levels of phosphorus (0, 30, 60 and 90 kg P205 ha) in main plot and 4 levels of sulphur (0, 30, 60 and 90 kg S ha) in sub plot. The mustard variety Bio-902 (Pusa Jai Kisan) was sown on 27 `h October 2000 and 28`h October 2001 in respective years, maintaining 30 cm row to row and 10 cm plant to plant distance. The application of 10 t farmyard manure ha proved highly significant in increasing all the growth and yield components, seed, stover and biological yield, N, P and S content in seed and stover and their total uptake, oil and protein content and their respective yield, net returns, B:C ratio, HUE, soil organic carbon and available N, P, K and S status after harvest of the crop. Marginal improvement in RGR during 90 DAS-harvest stage and concentration of saturated and unsaturated fatty acids was observed under the application of 10 t FYM ha. The increasing levels of phosphorus upto 60 kg ha significantly increased growth characters like plant height, dry matter accumulation (at 45 DAS) and number of branches (primary and secondary), CGR, leaf area per plant, LAI, LAD and HUE at all periodical growth stages and chlorophyll `a, `b and total chlorophyll content in leaves at 75 DAS, yield attributes, seed, stover and biological yield, N and S content Department of Agronomy, College of Agriculture, Bikaner z Professor and University Head, Department of Agronomy and Dean, College of Agriculture, Bikaner 166 in both seed and stover, P content in stover, total N and S uptake, oil and protein content and their respective yields, net returns, B:C ratio and organic carbon, available N, K and S status of soil after harvest of the crop. Whereas, P content in seed and available P content in soil after harvest of the crop increased significantly upto 90 kg P205 ha. RGR increased significantly upto 30 kg P205 ha during 45-90 DAS stage. Phosphorus application at different levels did not affect significantly the concentration of palmitic, stearic, oleic and linoleic acids but linolenic acid decreased gradually as the P levels increased. Significantly higher seed yield (20.75 q ha), oil yield (753.21 kg ha), net returns (Rs. 15887 ha) and B:C ratio (1.584) was recorded with 60 kg P205 ha-I. Significant increase in growth characters like plant height, dry matter accumulation per metre row length, number of branches (primary and secondary), CGR, leaf area per plant, LAI, LAD and HUE at all periodical growth stages and chlorophyll `b and total chlorophyll content in leaves at 75 DAS, yield attributes, seed, stover and biological yield, N and P content in both seed and stover and their total uptake, S content in stover, protein content and crude protein yield, palmitic, stearic, linoleic and linolenic acids concentration, net returns, B:C ratio and organic carbon, available N, P and K status of soil after harvest of mustard was observed upto 60 kg S ha. Chlorophyll a content at 75 DAS, S content in seed, total S uptake, oil content, oil yield and available S status in soil after harvest of the crop increased significantly upto 90 kg S ha. Significant improvement in NAR and harvest index was noted only upto 30 kg S ha. The application of S at increasing levels gradually decreased the oleic acid concentration in mustard oil. Significantly higher seed yield (20.86 q ha), net returns (Rs. 16178 ha) and B:C ratio (1.625)were recorded with 60 kg ha-1. Interaction effect of FYM x P and P x S were found significant for siliquae per plant, seed and biological yield,total P and S uptake, net returns and B:C ratio. The interaction effect of FYM x S was significant for total S uptake by crop at harvest.

KrishiPrabha (Indian Agricultural Doctoral Dissertations Repository)

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