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20048
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Subject: Agronomy × End date: 2004 × Start date: 2004 ×
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    ThesisItemOpen Access
    Evaluation of sustainable production model of wheat yield in rice-wheat cropping system
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-04) John Anurag, P.; Singh, R.K.
    To evaluate the wheat yield in different crop models due to integrated affect of different nitrogen levels, weed flora and soil physical and chemical properties, an experiment in randomized block design was laid out during kharif season of 2002-2003 at Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar. Four models viz., recommended dose of NPK and Zn (150, 60, 40 and 25 kg ha-1), nitrogen 180 kg ha-1 along with green manure of Sesbania and recommended dose of P, K and Zn, 10 per cent extra of recommended dose of fertilizer and recommended dose of NPK and Zn with direct seeding of rice followed by zero tillage wheat, were taken into consideration for their comparison. Models were considered as treatments and were replicated twenty one times. Wheat variety PBW-243 was sown on 12th of November using 100 kg seed ha-1. Experimental soil was silty clay loam in texture. Model subjected to higher fertilizer doses showed significantly higher yield and yield attributing characters. Green manuring in the previous rice crop was found to have a positive residual effect on succeeding wheat crop. Yield in recommended dose of fertilizer with conventional tillage, was at par with zero tillage model with recommended package of fertilizer doses. Improved soil physical properties were found due to green manuring, whereas results in this regard can be anticipated in zero tillage in long term. Except available nitrogen, available phosphorus and potassium in soil were found to be highest in green manuring model followed by zero tillage. Fertility status of soil reflected nutrient concentration in straw and grain of wheat. Thus, green manuring of Sesbania before rice crop can be regarded as the best model among the four models considered, followed by zero tillage after direct seeded rice in terms of wheat yield.
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    ThesisItemOpen Access
    Studies on nitrogen management in summer rice (Oryza sativa L.) under different crop establishment methods
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-08) Singh, Sushil Kumar; Singh, Satya Pal
    A field experiment was conducted during spring season, 2003 at Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar , Uttaranchal. The experiment was laid-out in split plot design, keeping crop establishment methods (Transplanted on flat beds, transplanted on raised bed method) in main plots and nitrogen management practices i.e. control, recommended nitrogen, farmer‟s fertilizer practices, SPAD 35-37, SPAD 37-39, LCC 3.5, LCC 4.0, LCC 4.5 in sub plots with three replication. The transplanting crop on raised beds gave higher grain (70.0 q ha-1) and straw (98.9 q ha-1) yields than transplanted on flat beds. The nitrogen management practices based on LCC 4.0 shade i.e. 180 kg N ha-1 recorded significantly higher grain yield (84.9 q ha-1) followed by LCC 4.5 (77.5 q ha-1) and SPAD 37-39 (74.0 q ha-1) which were 28.44, 17.24 and 11.95 per cent higher, respectively over recommended dose of 150 kg N ha-1 and 31.84, 24.0 and 18.40 per cent higher over 120 kg N ha-1 as farmer‟s practice. The straw yield was found maximum in case of LCC 4.5 (111.9 q ha-1) where total 210 kg N ha-1 was applied followed by SPAD 37-39 (107.6 q ha-1) and LCC 3.5 (106.2 q ha-1). Crop establishment methods influenced number of grains panicle-1 significantly. The number of grains panicle-1 were higher in transplanted crop on raised beds than crop transplanted on flat beds. The number of spikelets and grains panicle-1 were maximum in SPAD 37-39 based nitrogen management practice whereas number of panicle m-2 recorded higher in LCC 4.5 nitrogen management practice. Total nitrogen uptake and nitrogen use efficiency were also recorded higher under raised bed method of crop transplanting while among the nitrogen management practices the total nitrogen uptake was found higher in LCC 4.5 practice followed by LCC 4.0 practice and nitrogen use efficiency was higher under SPAD 37-39 and LCC 4.0, where total 150-180 N ha-1 was applied, respectively. Thus, transplanting of summer rice crop on raised beds fertilized with 150 to 180 kg N ha-1 and splitting based on LCC 4.0 or SPAD 37-39 reading with 30 kg N ha-1 as basal dose had significant beneficial effect on yield and yield attributes of rice with better nitrogen use efficiency.
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    ThesisItemOpen Access
    Effect of zinc levels on growth and yield of forage sorghum [Sorghum bicolor (L.) Moench]
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-07) Ghanghas, Vikas; Verma, Surendra Singh
    A field experiment was conducted during the Kharif season of 2003, at Instructional Dairy Farm of G.B. Pant University of Agriculture and Technology , Pantnagar to study the effect of various levels of zinc (0, 5, 10 and 15 kg ha-1) and response of fodder sorghum varieties (Pant Chari –5, Pant Chari-4 and Rio) with respect to grain and stover yield, yield attributes quality and uptake of zinc. The soil of the experimental site was silty clay loam in texture having organic carbon (1.18 per cent), total nitrogen (0.17 per cent), available phosphorus (31.2 kg ha-1) and available potash (323.04 kg ha-1) with pH 7.2. Treatments consisted of three varieties and with four levels of zinc, with varieties in main plot and zinc levels in sub plots with four replications and experiment was laid out in split plot design. Among the verities, Pant Chari-5 recorded 10.33 and 22.05 per cent higher grain yield over Pant Chari-4 and Rio, respectively. Increase in green fodder yield was 10.74 and 16.73 per cent higher over Pant Chari-4 and Rio respectively. Zinc application @ 5 kg ha-1 was found significantly superior over 0, 10 and 15 kg ha-1 with respect to grain and stover yield, yield attributes and quality of fodder. Zinc application also increased the uptake of zinc upto the rate of 15 kg Zn ha-1. Similar trend was observed in digestibility of dry matter with zinc application upto 5 kg ha-1. Thus, it may be concluded that sorghum cv Pant Chari-5 along with 5 kg Zn ha-1 was indicative of the requirement of variety in Tarai conditions of Northern India. Stover quality was also superior at foresaid dose of zinc.
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    ThesisItemOpen Access
    Studies On Development Of Sustainable Direct Seeded Rice-Wheat Cropping System
    (Govind Ballabh Pant University of Agriculture and Technology;Pantnagar, 2004) Singh, Shailendra; Singh, Govindra
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    ThesisItemOpen Access
    Studies On Production Potential Of Different Crops Under Poplar And Shisham Based Agroforestry Systems
    (Govind Ballabh Pant University of Agriculture and Technology;Pantnagar, 2004) Dhiraj Kumar; Rajput, P.R.
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    ThesisItemOpen Access
    Effect Of Integrated Nutrient Management On Grain Yield And Quality Of Soybean (Glycine Max L Merrill) And Its Rhizospheric Microbial Population
    (Govind Ballabh Pant University of Agriculture and Technology;Pantnagar, 2004) Chaturvedi, Sumit; Chandel, A.S.
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    ThesisItemOpen Access
    Studies On The Use Of Herbicide And Organic Matter In Rice-Wheat Cropping System
    (Govind Ballabh Pant University of Agriculture and Technology;Pantnagar, 2004) Singh, Purshotam; Mishra, O.P.
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    ThesisItemOpen Access
    Management Of Caesulia Axillaris Roxb. And Other Weeds In Transplanted Rice
    (Govind Ballabh Pant University of Agriculture and Technology;Pantnagar, 2004) Singh, Arvind Parkash; Mishra, O. P