Nutrient management studies on productivity and profitability in spring planted sugarcane (Saccharum officinarum L.)
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Date
2013-08
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
A field experiment entitled “Nutrient management studies on productivity and profitability in spring planted sugarcane (Saccharum officinarum L.)” was conducted at Norman E. Borlog Crop Research Centre of Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, U.S. Nagar, India during 2011-12 and 2012-13. Treated setts of sugarcane verity Co Pant 90223 were planted at 75 cm apart row to row on 10th March during 2011-12 and on 02nd March during 2012-13 by furrow method. An experiment was conducted in Randomized block design with three replications. The soil of the experiment was silty clay loam, rich in organic carbon (1.11%), soil available N (224.1 kg/ha), P2O5 (42.8 kg/ha), K2O (258.6 kg/ha) and S (47 kg/ha). The level of other nutrient were in soil Zn (2.0 mg/kg), Fe (36.2 mg/kg) and Mn (35.8 mg/kg), the soil was neutral in pH (7.3). Total 12 treatments i.e. T1 – control, T2 – N, T3 – NP, T4 – NPK, T5 – NPK+S, T6 – NPK+Zn, T7 – NPK+Fe, T8 – NPK+Mn, T9 – NPK+S+Zn,T10 NPK+S+Zn+Fe, T11- NPK+S+Zn+Fe+Mn and T12 – FYM (20 t/ha). Doses of different nutrients were applied as N-120, P-60, K-40, S-40, Zn-25, Mn -50 kg/ha; Fe was applied 1% spray thrice at weekly interval at vegetative stage. Half of the N along with all other nutrients were applied as basal at the time of planting in furrows and remaining half of the N was applied in two splits up to 90 DAP (before onset of the monsoon) last week of June.
Highest cane yield 108.7 t/ha during 2011-12 and 109.4 t/ha during 2012-13 was recorded from T9 – NPK+S+Zn treatment which was significantly higher over the rest of the treatments except. T6, T7, T10 and T11 during 2011-12 and during 2012-13 in T10 and T11. The highest yield in this treatment was due to higher NMC, higher cane girth, and higher cane length. The higher NMC was due to higher shoot population. Higher shoot population was the result of higher initial emergence with less mortality at harvest in the shoot. CCS yield was also highest in this treatment. There was an increase in cane with the application of different macro and micro nutrients. B: C ratio was highest (1.72) in the treatment T7. The increase in cane yield in T-9 over control was 61% during 2011-12 and 61.24% during 2012-13.
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