Evaluation of herbicides for weed control in sorghum (Sorghum bicolour) in Nigeria

Assessment of precautionary measures in agrochemicals usage among urban arable crop farmers in Oyo state, Nigeria

“…Hence, they take more precautionary measures in their uses. The findings support the Ishaya et al (2007); Ogunjimi and Farinde (2012) ;Chikoye et al (2007) and Dimas et al (2006) reports that herbicides were the most common agro-chemicals used by farmers in Nigeria and Namibia. Table 5 showed that level of precautionary measures observed by farmers had a significant relationship with the perceived health effects (r = 0.209; P≤0.022) associated with the use of agro-chemicals in the study area.…”

“…Over 80 percent of this figure live in metropolitan areas, thus, urban agriculture accounts for about 78 percent of the total food consumed in such region (Community Food Security Coalition CFSC, 2003). In Nigeria, the case is different as over 75 percent of the food consumed in urban areas are produced in rural areas (Okolo, 2006 Interestingly, the importance of urban agariculture cannot be overlooked especially in fighting the menace of food insecurity in developing countries (Ishaya et al, 2007). It plays an important role as part of an environmental sustainability program.…”

Germination of Chloris barbata, Cynodon dactylon, and Cyperus rotundus from Angola at Constant and Alternate Temperatures

“…In the absence of adequate control measures, weeds are estimated to cause an average of 50% yield loss for maize and soybean in North America [2,3]. Similar results were reported in various studies from European countries [4,5], and even higher losses were observed for maize, sorghum, and rice in Africa [6][7][8]. Herbicide application and soil tillage are the most commonly adopted and effective weed control measures for modern agriculture systems, but the situation is completely different in developing countries.…”

“…Herbicide application and soil tillage are the most commonly adopted and effective weed control measures for modern agriculture systems, but the situation is completely different in developing countries. Due to the lack of available machinery, pesticides, and trained operators, weed management in Africa is largely based on hand weeding [9], requiring an impressive amount of labour, estimated at more than 300 h/ha in sorghum [7] to achieve satisfactory weed control. Given the obvious difficulties in conducting such a labour-intensive operation promptly on all fields, hand weeding is often not performed at the right time or to the right extent leading to not optimal weed control.…”

Herbicide tolerance of Rabi sorghum varieties and germplasm

“…It has a low effectiveness on grasses (Dan et al 2011) and its efficacy decreases under moisture stress conditions (Tapia et al 1997). Atrazine may also cause carry over effects in subsequent sensitive crops under some conditions, so alternative treatments are needed (Ishaya et al 2007, Keeling et al 2013. Sensitivity of grain sorghum to currently available postemergence herbicides is one of the major concerns to manage weeds that emerge after crop establishment (Archangelo et al 2002).…”