J.E.G. Ikeorgu and Chris Onwubuemeli
The effects of introducing TMS 30572 and TMS 4(2)1425 cassava varieties at 0 and 28 days after planting (DAP) upland rice were evaluated on-farm in Enugu and Nsukka ADP zones of Enugu State between 1996 and 1997. The sparse canopy cassava, TMS 4(2)1425 was more compatible with upland rice than the dense canopy cassava. Delaying cassava introduction by 28 days gave higher rice grain yields than simultaneous planting of both crops on the same day, though at the expense of cassava tuber yields. Farmers are advised to delay cassava introduction to rice by 28 days and use sparse cassava genotypes so as to maximize rice yields.