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Subject: Agronomy × Author: Barthwal, Ashutosh × End date: 2009 × Start date: 2004 × 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.