Long-term effects of fertilizer application and continuous cropping on soil properties under rice-wheat cropping system in a mollisols
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Date
2016-07
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Field experiment was conducted during 2014 productivity and soil quality in an ongoing long term fertilizer experiment at N.E Borlaug CRC, GBPUAT, Pantnagar during years of continuous fertilizer use. Different combination of N,P,K,Zn and FYM treatments have been maintained in a fixed lay out since the beginning of the experiment in a Randomized block design with three replication. Rice variety PR 113 and Wheat variety PBW 502 used for the study. Surface and sub-surface soil samples were collected from the individual plots and were analyzed for soil properties. The soil pH, EC, bulk density and ranged from 7.6 to 7.8, 0.30 to 0.36 dS/m, 1.26 to 1.52 Mg/m respectively at the surface layer and 7.4 to 7.7, 0.27 to 0.37 dS/m, 1.34 to 1.61 Mg/m and 0.62 to 1.24 per cent, respectively at the sub ranged from 7.6 to 7.8, 0.32 to 0.37 dS/m, 1.26 to 1.56 Mg/m respectively at the surface layer and 7.4 to 7.7, 0.29 to 0.38 dS/m, 1.35 to 1.64 Mg/m and 0.61 to 1.16 per cent, respectively along with FYM maintained the pH, EC, organic carbon available N, P, K, total S, o control. The content of N, P, K, total S, 321.9 Kg/ha, 7.9 to 37.4 Kg/ha, 85.2 to 156.5 Kg/ha, 551.2 to 1339.4 mg/kg, 487.6 to 1101.7 mg/kg and 9.7 to 62.1 mg/kg, respectively Kg/ha, 8.5 to 36.7 Kg/ha, 80.8 to 150.8 Kg/ha, 531.4 to 1110.6 mg/kg,424.9 to 931.6 mg/kg and 7.5 to 43.7 mg/kg, respectively 179.3 to 325.7 Kg/ha, 8.8 to 39.1 Kg/ha, 86.3 to 161.3 Kg/ha, 551.8 to 490.5 to 1138.6 mg/kg and 11.8 to 63.4 mg 141.9 to 233.3 Kg/ha, 8.2 to 38 Kg 917.4 mg/kg and 8.3 to 46.5 mg
Observed results showed that application of 100% NPK + FYM @ 15t highest grain yield of rice of 50.3 q
Shweta Singh Id. No. : 39717 semester, 2014-2015 Degree : M.Sc. (Ag.) Soil Science Deptt. : Soil Science
term effects of fertilizer application and continuous cropping on soil properties under rice-wheat cropping system in a Mollisol”
Shri Ram
ABSTRACT
Field experiment was conducted during 2014-15 to assess the change in and soil quality in an ongoing long term fertilizer experiment at N.E Borlaug CRC, GBPUAT, Pantnagar during years of continuous fertilizer use. Different combination of N,P,K,Zn and FYM treatments have been maintained in a fixed lay out of the experiment in a Randomized block design with three replication. Rice variety PR 113 and Wheat variety PBW 502 used for the study. Surface surface soil samples were collected from the individual plots after crop harvest soil properties. The soil pH, EC, bulk density and organic carbon ranged from 7.6 to 7.8, 0.30 to 0.36 dS/m, 1.26 to 1.52 Mg/m3 and 0.67 to 1.62 per cent, respectively at the surface layer and 7.4 to 7.7, 0.27 to 0.37 dS/m, 1.34 to 1.61 Mg/m 1.24 per cent, respectively at the sub-surface layer in rice while in wheat ranged from 7.6 to 7.8, 0.32 to 0.37 dS/m, 1.26 to 1.56 Mg/m3 and 0.64 to 1.53 per cent, respectively at the surface layer and 7.4 to 7.7, 0.29 to 0.38 dS/m, 1.35 to 1.64 Mg/m and 0.61 to 1.16 per cent, respectively, at the sub-surface layer . The application of NPK the pH, EC, organic carbon over initial value. The content of organic S & available S improved significantly ov control. The content of N, P, K, total S, organic S & available S ranged from 173.7 to 321.9 Kg/ha, 7.9 to 37.4 Kg/ha, 85.2 to 156.5 Kg/ha, 551.2 to 1339.4 mg/kg, 487.6 to 1101.7 mg/kg and 9.7 to 62.1 mg/kg, respectively, at the surface layer and 144.2 to 228.7 Kg/ha, 8.5 to 36.7 Kg/ha, 80.8 to 150.8 Kg/ha, 531.4 to 1110.6 mg/kg,424.9 to 931.6 and 7.5 to 43.7 mg/kg, respectively, at the sub-surface layer in rice and in wheat 179.3 to 325.7 Kg/ha, 8.8 to 39.1 Kg/ha, 86.3 to 161.3 Kg/ha, 551.8 to 1340.7 mg/kg, and 11.8 to 63.4 mg/kg, respectively, at the surface layer and ha, 8.2 to 38 Kg/ha, 80 to 162 Kg/ha, 536.4 to 1109.5 mg/kg, 426.8 to kg and 8.3 to 46.5 mg/kg, respectively, at the sub-surface layer .
Observed results showed that application of 100% NPK + FYM @ 15t/ highest grain yield of rice of 50.3 q/ha and wheat of 48.2 q/ha which was significantly
(Ag.) Soil Science
term effects of fertilizer application and continuous wheat cropping system in
15 to assess the change in and soil quality in an ongoing long term fertilizer experiment at N.E Borlaug CRC, GBPUAT, Pantnagar during years of continuous fertilizer use. Different combination of N,P,K,Zn and FYM treatments have been maintained in a fixed lay out of the experiment in a Randomized block design with three replication. Rice variety PR 113 and Wheat variety PBW 502 used for the study. Surface after crop harvest rganic carbon 7 to 1.62 per cent, respectively at the surface layer and 7.4 to 7.7, 0.27 to 0.37 dS/m, 1.34 to 1.61 Mg/m3 surface layer in rice while in wheat it and 0.64 to 1.53 per cent, respectively at the surface layer and 7.4 to 7.7, 0.29 to 0.38 dS/m, 1.35 to 1.64 Mg/m3 surface layer . The application of NPK . The content of rganic S & available S improved significantly over the rganic S & available S ranged from 173.7 to 321.9 Kg/ha, 7.9 to 37.4 Kg/ha, 85.2 to 156.5 Kg/ha, 551.2 to 1339.4 mg/kg, 487.6 to 4.2 to 228.7 Kg/ha, 8.5 to 36.7 Kg/ha, 80.8 to 150.8 Kg/ha, 531.4 to 1110.6 mg/kg,424.9 to 931.6 surface layer in rice and in wheat 1340.7 mg/kg, at the surface layer and kg, 426.8 to
/ha gave the ha which was significantly