WEED POPULATION DYNAMICS AND CROP YIELD IN CASSAVA BASED INTERCROPPING SYSTEMS AT BADEGGI, CENTRAL..

The experiment was carried out at the National Cereals Research Institute's lowland experimental field in Badeggi (Latitude 9o45'N, Longitude 60o7'E, ALT 70.57 m above sea level) in Nigeria's southern Guinea savannah zone. The trial was conducted in 2011, 2012, and 2013 with the goal of determining the impact of legume intercropping on weed growth and cassava productivity. The cassava/legume intercropping trial was replicated three times using a Randomized Complete Block Design. Cassava intercropping with velvet bean (Mucuna pruriens), cowpea (Vigna unguiculata), soybean (Glyxine max), hyacinth bean (Lablab purpureus), Jointvetche (Aeschynomene histrix), and solitary cassava were the treatments. The plot was 13.5 m x 5 m in size. The results showed that intercropping legumes with cassava reduced weed density and weed dry matter, albeit this differed depending on the legumes used in the intercrop. The cassava/mucuna intercrop had a higher rate of weed smothering. The height of cassava plants was significantly affected by the legume intercrop. The tuber yield of sole cassava was higher. Cassava cowpea produced the highest yield of the intercrops, making it the best for intercropping.

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