EFFECTS OF DIFERENT TILLAGE PRACTICES AND INTERCROPPING SYSTEMS ON WEED CONTROL AND PERFORMANCE OF GUINEA CORN SORGHUM BICOLOR (L.) MOENCH AND BENISEED (SESAMUM INDICUM L.) AT BADEGGI SOUTHERN GUINEA SAVANNAH OF NIGERIA
The trials were carried out at the experimental field of National Cereals Research Institute Badeggi during the 2017 and 2018 cropping seasons. The main objective was to determine the effect different tillage practices and cropping system on weed growth and performance of sorghum and Beniseed. The tillage practices were: ridge, flat and broad bed while the cropping systems were sole sorghum, sole Beniseed and sorghum /Beniseed intercrop. The results indicated that highest weed density and dry matter/m2 were obtained in sole sorghum planted on ridge while the least weed density and dry matter/m2 were recorded in sorghum /Beniseed intercrop planted on broad bed. Sorghum plants were tallest when intercropped with Beniseed on flat. The highest grain yield was obtained in sole plots planted on broad bed. The height of the Beniseed was not affected by both tillage practices and intercrop while the highest and least grain yield of Beniseed were obtained when planted sole on flat and ridge respectively. This result showed that sorghum /Beniseed intercrop on broad bed controlled weed most and sole sorghum on broad bed gave the highest sorghum grain yield while maximum Beniseed grain yield was produced in sole planting.