Nutrient levels in corn and competing weed species in a first year milpa, Indian Church, Belize, C.A. [(British Honduras)]
1980
Lambert, J.D.H. (Carleton Univ., Ottawa (Canada). Dept. of Biology) | Arnason, J.T.
Grain production in two 1/4 hectare plots gave 2971 and 1380 kg/ha for an average yield of 2175 kg/ha. Average yield for local farmers was 1700 kg/ha. Weed biomass accounted for 50 per cent of total biomass in the hydric Site 4, but held 64-83 per cent of the total nutrients. In the mesic Site 1, values were 5 per cent and 3-29 per cent respectively. Canna edulis was the most abundant weed species. Soil nutrient levels neither increased or decrease significantly between clearing and harvesting. Any decline in future crop production would be due to increased weed competition and not a decline in soil fertility. Weevil (Sitophilus zaemis) infestation is a serious problem in hybrid corn not encountered with local varieties
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