EFFECT OF IRRIGATION AND NUTRIENT MANAGEMENT ON PRODUCTIVITY OF GOBHI SARSON (Brassica napus L.) UNDER CONSERVATION TILLAGE

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dc.contributor.advisorSharma, Sanjay K.
dc.contributor.authorBijani, Hemali
dc.date.accessioned2019-07-20T06:10:19Z
dc.date.available2019-07-20T06:10:19Z
dc.date.issued2019-06
dc.description.abstractThe present study was conducted at experimental farm of CSK HPKV, Palampur, during the year 2017-18 with the objectives to evaluating the effect of irrigation levels and nutrient management on yield and nutrient uptake by gobhi sarson (Brassica napus L.) under conservation tillage and to study the effect of various treatments on soil properties. Twelve treatments comprised three irrigation levels viz., I1 (no irrigation), I2 (50% i.e. 25 mm irrigation at critical stages) and I3 (100% i.e. 50 mm irrigation at critical stages) in main plots and four nutrient management (NM) levels viz., NM1 (FYM @ 25 t ha-1), NM2 (FYM @ 20 t ha-1 + 50%NPK), NM3 (FYM @ 10 t ha-1 + 75%NPK) and NM4 (100%NPK) in sub plots were evaluated in a split plot design. Gobhi sarson (var. GSC-7) was sown on 24 November 2017. Irrigation with 25 mm water (I2) at 40 DAS (vegetative growth stage) and 130 DAS (siliqua development stage) improved the plant height (cm) and no. of primary and secondary branches, no. of siliquae per plant, no. of seeds per siliqua of crop and finally enhanced the yield of crop significantly in comparison to rainfed conditions (I1). Further increase in irrigation level to I3 at the respective irrigation stages, however, did not enhance the yield. Among nutrient management practices significantly better growth and yield attributes were observed under INM treatment involving NM3 which resulted in significantly highest seed yield (13.50 q ha-1) followed by NM2 and NM4. The minimum growth and seed yield (10.27 q ha-1) of crop was observed in the plots receiving 25 t ha-1 FYM only. Effects of irrigation and nutrient management levels on 1000-seed weight and harvest index were not significant. The uptake of different nutrients viz; N, P, K, S, Fe, Mn, Cu and Zn by gobhi sarson in general, followed the yield trend. Crude protein content (15.63%) were higher under I3 level of irrigation and NM3 level of nutrient management (15.38%). Soil pH and organic carbon at surface (0-0.15 m) and sub-surface (0.15-0.30 m) layers were not affected by irrigation as well as nutrient management levels. Water holding capacity and available N, P, K, S and micronutrient cations (Fe, Mn, Cu and Zn) in soil increased significantly by integrated nutrient management levels over sole chemical and organic application but irrigation levels did not bring significant change in their contents. Total water use efficiency (TWUE) was not affected by irrigation levels but nutrient management levels had significant influence on it. Irrigation water use efficiency (IWUE) decreased with increase in irrigation levels, whereas among nutrient management levels integrated plots increased it. The highest gross return (Rs. 66,063 ha-1) and net return (Rs. 33,407 ha-1) were obtained under combination I3NM3 whereas highest B: C ratio obtained with combination of I2NM4 (2.47).en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810115731
dc.keywordsGobhi Sarsonen_US
dc.language.isoenen_US
dc.pages103pen_US
dc.publisherCSKHPKV, Palampuren_US
dc.subSoil Scienceen_US
dc.themeNutrient management on productivity of gobhi sarson.en_US
dc.these.typeM.Scen_US
dc.titleEFFECT OF IRRIGATION AND NUTRIENT MANAGEMENT ON PRODUCTIVITY OF GOBHI SARSON (Brassica napus L.) UNDER CONSERVATION TILLAGEen_US
dc.typeThesisen_US
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