Assessment of weed infestation and economic returns of maize/cowpea intercrop under different tillage systems in northern Ghana

Weed Competition and Performance of Sorghum and Groundnut Intercrop as Influenced by Row Orientation and Arrangement

“…W eed cover score was assessed at physiological maturity where a 1m 2 quadrat was placed randomly in each plot and marked out. Weed cover within the quadrats area was scored according to the standard scale of; 0= No Weed, 1= Moderately Weedy, 2= Very Weedy and 3= Highly W eedy (Komboik et al, 2003). W eed density was determined by counting the number of each weed within the quadrat in each plot and was calculated as follows;…”

Distribution, Severity Status, Farmers Knowledge and Management Practices of Wild Radish (Raphanus raphanistrum L.) in Horro Guduru Wollega Zone, Western Ethiopia

“…Field crop types used for herbaceous weed sample collection were 'teff'', wheat and maize for cereal crops; field pea and broad bean for pulse crops and noug for oil crops. Wittenberg et al (2004) transect survey method was employed and a quadrate was laid at a distance of 50 m. For each sample plot of field crops, four sample quadrates were taken by laying a quadrate (1m x 1m) at a distance of ten meters and marked out (Kombiok et al 2003). Weed vegetation stand data including R. raphanistrium were collected from 864 quadrates of 144 sample sites from six field crops of eight sampled administrative kebeles.…”