Performance of yam minituber/maize intercrop in the humid tropics of southeast Nigeria

  • J.E.C. Ikeorgu National Root Crops Research Institute, UmudikeP.M.B. 7006 Umuahia, Nigeria.


Trials were conducted in Umudike in 2000 and 2001 to determine the response of yam minituber from D. alata (UM 680) and D. rotundata (Obioturugo) to intercropping pressure, using maize as the component crop. Four sizes of minitubers (25g; 50g; 75g and 100g) were intercropped with a full season maize (TZSR-Y) in randomized complete blocks design replicated three times. The maize component depressed minituber yield by only 5% but improved the calorie productivity of the minituber/maize system by 33%, thus indicating that maize is a compatible and productive intercrop of yam minitubers. Farmers can therefore intercrop yam minitubers with maize.

[Niger Agric. J. 33 (2002): 83-87]

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