Response of brown sarson to nitrogen and phosphorus application under early, normal and late sown conditions

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Response of brown sarson to nitrogen and phosphorus application under early, normal and late sown conditions

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Title: Response of brown sarson to nitrogen and phosphorus application under early, normal and late sown conditions
Author: Shibana Bashir, (Scholar); Khanday, B. A. (Guide)
Abstract: A field experiment was conducted at Agronomy Farm of Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar during rabi 2009-10 and 2010-11 on silty clay loam soil low in available nitrogen and medium in available phosphorus and potassium with neutral pH to study the influence of nitrogen (30, 60 and 90 kg ha-1) and phosphorus (20 and 40 kg ha-1) under early (30th September), normal (15th October ) and late (30th October) sown conditions on growth and yield behaviour of rapeseed (Brassica campestris L.). Normal sowing recorded the highest grain yield with concomitant improvement in its yield attributes. The magnitude of increase in seed yield was 10.60 per cent (2009-10) and 10.13 per cent (2010-11). Discernible improvement was also observed in yield and yield attributes by the application of 60 kg N ha-1. Phosphorus application upto 40 kg ha-1 brought detectable improvement in growth, yield and yield attributes, however, primary branches, seeds siliqua-1 and seed straw ratio was not influenced by this application. Nitrogen, phosphorus and potassium content and uptake was significantly affected by the treatment. Normal date of sowing (15th Oct.), 60 kg N ha-1 and 40 kg P ha-1 noticed higher values. The oil content and oil yield was also higher at 60 kg N ha-1 and 40 kg P ha-1 when the crop was sown on 15th of October during both the years. The optimum dose of nitrogen for 2009-10 was high (63.88 kg ha-1) as compared to 2010-11 (62.28 kg ha-1). Gross returns of Rs. 37590.00 were realized with treatment combination of D2N90P20, whereas highest net returns of Rs. 21678.00 and benefit: cost ratio of Rs. 1.39 were realized with treatment combination D2N60P40 (15th October sowing, 60 kg N ha-1 and 40 kg P2O5 ha-1).
URI: http://dspaces.uok.edu.in/jspui//handle/1/1050
Date: 2012


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