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Management of the root-knot nematode (Meloidogyne incognita) in carrots by intercropping

Author

Listed:
  • McDonald, Frank D.
  • Francois, Bernard

Abstract

The management of root-knot nematode (Meloidogyne incognita) in carrot was studied over a three-year period in Sl. Vincent. Onion (Al1ium cepa), chive (Allium schaenoprassum), corn (Zea mais) and eddoe (Colocasia esculcnta var. antiquorum) were found effective in reducing root-knot nematode population densities in the soil. Cropping systems were then designed and tested for their effectiveness in reducing nematode population densities and galling damage in carrot (Daucus carata). Cabbage-carrot, chive-carrot and onion-carrot were found to be the most effective. Cabbage-carrot and chive-carrot significantly reduced unmarketable yields and root damage in carrots as compared to carrot monoculture. Root gall index was positively correlated with unmarketable yields. Economic analysis showed that the two intercropping systems were more efficient in the use of land, labour and capital resources than carrot monoculture, and that the overall farm income is greatly increased by intercropping carrot with cabbage or chive.

Suggested Citation

  • McDonald, Frank D. & Francois, Bernard, 1987. "Management of the root-knot nematode (Meloidogyne incognita) in carrots by intercropping," 23rd Annual Meeting, August 23-28, 1987, St. John's, Antigua 260413, Caribbean Food Crops Society.
    • Handle: RePEc:ags:cfcs87:260413
    DOI: 10.22004/ag.econ.260413
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    References listed on IDEAS

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    1. Mc Donald, Frank D., 1986. "Effect Of Two Selected Intercropping Systems On The Yields Of Carrots In St. Vincent," 22nd Annual Meeting, August 25-29, 1986, St. Lucia 261321, Caribbean Food Crops Society.
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