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Effect of tillage on the efficacy of CGA362622 on weed control in maize
Abstract
field trial was conducted to assess the performance of CGA362622 (trifloxysulfuron sodium), a sulfonylurea based herbicide formulated with ametryn (N-ethyl-N-(1- methy (ethyl)-6-(methylthio)-1,3,5-
triazine-2, 4-diamine) on weed control in maize at the Faculty of Agriculture, University of Benin, Benin City, Nigeria. The herbicide was applied pre-emergence at 200 g ai/ha and post emergence at 300 g a.i.
ha-1 under three tillage methods. The trial was laid out in a split plot arrangement in a randomized complete block design. The main plots were tillage and subplots treatments were the weed control
methods. The tillage treatments were no-till with existing stubble packed (NT), ploughed (P), and ploughed and harrowed to obtain a fine seed bed (P+H). The subplots were herbicide (H) and no herbicide (NH). Weed regeneration was significantly higher under NT compared with other methods of land preparation. The herbicide treatment depressed maize yield. Grain yields were 1619.58 and 277.46 kg/ha for H and NH, respectively. Tillage treatment significantly affected grain yield with values of 3446.4, 2296.67 and 841.99 kg/ha for P+H, P and NT, respectively (P<0.05).
triazine-2, 4-diamine) on weed control in maize at the Faculty of Agriculture, University of Benin, Benin City, Nigeria. The herbicide was applied pre-emergence at 200 g ai/ha and post emergence at 300 g a.i.
ha-1 under three tillage methods. The trial was laid out in a split plot arrangement in a randomized complete block design. The main plots were tillage and subplots treatments were the weed control
methods. The tillage treatments were no-till with existing stubble packed (NT), ploughed (P), and ploughed and harrowed to obtain a fine seed bed (P+H). The subplots were herbicide (H) and no herbicide (NH). Weed regeneration was significantly higher under NT compared with other methods of land preparation. The herbicide treatment depressed maize yield. Grain yields were 1619.58 and 277.46 kg/ha for H and NH, respectively. Tillage treatment significantly affected grain yield with values of 3446.4, 2296.67 and 841.99 kg/ha for P+H, P and NT, respectively (P<0.05).
