Citation Information

  • Title : Impact of rotation on yield and economic performance of summer crops-winter canola cropping systems.
  • Source : American-Eurasian Journal of Sustainable Agriculture
  • Publisher : American-Eurasian Network for Scientific Information
  • Volume : 1
  • Issue : 1
  • Pages : 68-76
  • Year : 2007
  • Document Type : Journal Article
  • Language : English
  • Authors:
    • Kumar, S.
    • Bishnoi, U. R.
    • Cebert, E.
  • Climates: Temperate (C). Humid subtropical (Cwa, Cfa).
  • Cropping Systems: Canola. Sorghum. Soybean. Wheat.
  • Countries: USA.

Summary

In southeastern USA, winter wheat as a double crop has proved to be economically profitable and beneficial for soil management to the farmers. Winter rape ( Brassica napus) also has similar potential but its suitability as a double crop and in rotation with summer crops has not been evaluated. Therefore, performance of winter rape in rotation and as a double crop with soyabean, maize, sorghum, and cotton were evaluated for two years. Results showed that the effect of rotation on plant density during both years was significant. Rotational effects on number of pods per plant were non-significant than rape grown as fallow in 2003 but not in 2004. Rape grown after soyabean produced significantly higher seed yield in 2003 (2739 kg ha -1) and 2004 (3129 kg ha -1) than after other crops except maize (2938 kg ha -1) and fallow (2876 kg ha -1). Planting rape after fallow gave significantly the lowest economic returns during both years. Rape gave significantly higher economic returns when planted after maize ($1237) and cotton ($1169) than soyabean-rape and sorghum-rape and fallow-rape rotations in 2003. Similarly, cotton-rape ($1442) and soyabean-rape ($1393) gave significantly higher economic returns per hectare than maize-rape, sorghum-rape, and fallow-rape cropping systems.

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