Citation Information

  • Title : Effect of organic v/s chemical nutrient packages on productivity, economics and physical status of soil in rice ( Oryza sativa) - potato ( Solanum tuberosum) cropping system in Chhattisgarh.
  • Source : Indian Journal of Agronomy
  • Publisher : Indian Society of Agronomy
  • Volume : 55
  • Issue : 1
  • Pages : 6-10
  • Year : 2010
  • Document Type : Journal Article
  • Language : English
  • Authors:
    • Shrikant, C.
    • Urkurkar, J.
    • Alok, T.
  • Climates: Humid subtropical (Cwa, Cfa).
  • Cropping Systems: Potatoes.
  • Countries: India.

Summary

Field experiments were conducted at Raipur in Inceptisols between 2003-04 and 2007-08 to compare organic, integrated and chemical fertilizer nutrient inputs pakages in scented rice ( Oryza sativa L.) - potato ( Solanum tuberosum L.) a high value cropping system. Seven different nutrient treatments, 5 of them having use of organic inputs and 1 each having integrated (50% through fertilizers and 50% through organic nutrients) and 100% through fertilizers were studied in RBD with 3 replications. Organic transition effect in which decline in yield from 1 to 3 years and again increase in yield was noticeable in rice under organic nutrient inputs packages. These treatments followed a steady increase and registered 20 to 50% more yield at the end of study compared to first year yield i.e. 2003-04. However, effect of different organic inputs packages on potato tuber yield was not stable over the years. Total productivity in terms of rice equivalent yield of the system (13.36 tonne/ha) and total net return (Rs 92,634/kg) was highest with chemical fertilizer treatment closely followed by integrated inputs use. 100% N (1/3 each from cowdung manure, neem cake and composed crop residue) appreciably increased the organic carbon (6.3 g/kg) over initial value (5.8 g/kg). However, availability of P and K did not show any perceptible change after completion of five cropping cycles under organic as well as integrated nutrient approaches.

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