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2008 - 200912010 - 20131
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Subject: Agronomy × Author: Barthwal, Ashutosh × End date: 2016 × Type: Thesis ×
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    ThesisItemOpen Access
    Effect of nutrient levels on growth and productivity of wheat (Triticum aestivum L.) in rice-wheat cropping system
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2008-06) Barthwal, Ashutosh; Bhardwaj, A.K.
    The field experiment was conducted to study the effect of nutrient levels on growth and productivity of wheat (Triticum aestivum L.) in rice-wheat cropping system on silty clay loam soil of order Mollisol, during Rabi season, 2006-07 at the crop research centre of G. B. Pant University of Agriculture and Technology, Pantnagar Uttrakhand, India. The experiment consisted ten treatments of different fertilizers combination comprising different nutrients i.e. N, P2O5, and K2O. Treatments were T1- 170: 60: 120, T2- 170: 30: 120, T3- 170: 0: 120, T4- 170: 30: 80, T5- 170: 30: 40, T6- 170: 30: 0, T7- 170: 30: 120, T8- 170: 30: 120, T9- 150: 60: 40, T10- 120: 40: 0 laid out in RBD with four replication. Residual effect of zinc and boron applied to rice crop was also studied. Wheat was sown on 14th November, 2006. Half of the total nitrogen along with full amount phosphorus and potassium were applied to crop as basal rest of the half nitrogen was top dressed in two splits at tillering and P.I. stage of crop growth. Application of nitrogen @ 120 kg ha-1 and phosphorus @ 40 kg ha-1 as farmer fertilizer practice produced lowest grain yield and yield increased 8% by applying recommended NPK (150: 60: 40 kg ha-1). Increasing fertilizer nitrogen up to 170 kg ha-1 along with 30 or 60 kg phosphorus and 80 or 120 kg potassium increased the crop growth, yield contributing characters, higher nutrient uptakes and yield of wheat significantly. Residual effect of zinc and boron applied to rice crop had significant positive effect on the productivity of wheat and might be sufficient the meet of requirement of wheat crop. Thus the results of foregoing investigation suggests that application of nitrogen, phosphorus and potassium @ 170, 60 and 120 kg ha-1 to wheat crop and micronutrient zinc and boron besides required NPK to rice crop are necessary for achieving higher productivity of wheat beyond 5.5 t ha-1 in rice-wheat cropping under Mollisols of Pantnagar.
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    ThesisItemOpen Access
    Integrated nutrient management in pigeonpea based intercropping system
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2013-03) Barthwal, Ashutosh; Singh, V.K.
    A field experiment was conducted during kharif season of 2010 and 2011 at Norman E. Borlaug Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar to study the effect of “Integrated nutrient management in pigeonpea based intercropping system”. The treatments were consisted of five intercropping systems (pigeonpea sole, Urdbean sole, maize sole, pigeonpea + urdbean and pigeonpea + maize), three fertility levels (RDF, RDF + FYM @ 5.0 t/ha and RDF + vermicompost @ 2.5 t/ha) and two seed inoculation levels (uninoculated and PSB inoculation @ 20 g culture per kg seed) The experiment was laid down in split plot design (SPD) keeping cropping system as main plot and combinations of fertility level and PSB inoculation as sub plot with three replications. Most of the growth parameters viz. plant height, trifoliate leaves, number of branches, nodule number & weight and dry matter accumulation, CGR and RGR of pigeonpea were significantly higher under pigeonpea + urdbean cropping system as compared to others. Intercropping of maize or urdbean with pigeonpea reduced yield attributes of all intercrops such as number of pods per plant and grain yield (g/plant) in urdbean, number of cobs per plant and grain yield (g/plant) in maize significantly over their respective sole cropping. However, intercropping of urdbean with pigeonpea increased the yield attributes and grain, straw, and biological yields of pigeonpea appreciably over sole cropping. The maximum pigeonpea equivalent yield (PEY) and land equivalent ratio (LER) was recorded in pigeonpea + urdbean cropping system. Pigeonpea equivalent yield of the intercropping systems involving urdbean and maize with pigeonpea were greater than sole cropping. Application of RDF + vermicompost @ 5.0 t/ha found as effective as RDF + FYM @ 5.0 t/ha and improved all the growth and yield parameters of pigeonpea, urdbean and maize and increased the fertility of soil after harvest of crop, than RDF alone. Seed inoculation with PSB increased the most of the growth parameters, yield of crops, microbial population, and available phosphorus content in soil over no inoculation. The highest gross return (Rs.59206/ha), net return (Rs.38513/ha) and B: C ratio (1.86) was obtained under pigeonpea + urdbean cropping system. Application with either RDF + vermicompost @ 2.5 t/ha or RDF + FYM @ 5.0 t/ha and PSB inoculation recorded maximum value of gross return, net return and B: C ratio.