Abstract:
Two field trials were conducted during the 2005/200
6 and 2006/2007 dry season under
irrigation at the Usmanu Danfodiyo University Teach
ing and Research Fadama Farm at
Kwalkwallawa, Sokoto (Latitude 13
0
1
’
N and Longitude 5
0
13’E, 350m above sea level) to study the
effect of cow-dung, nitrogen and weed interference
on the elemental sulphur content of onion (Allium
cepa L.). The treatments consisted of three levels
of cow-dung (0, 15 and 30 t/ha), three levels of
nitrogen (0, 50 and 75 kg/ha) and three weeding reg
imes (weedy check, 4 and 6 weeks after
transplanting) laid out in a randomized Complete Bl
ock Design (RCBD) with three replications. The
elemental sulphur content (mg/g) of the onion bulb,
was studied. The result showed significant (P <
0.05) effect of cow-dung, nitrogen and weed interfe
rence on the elemental sulphur content of onion.
Highest level of sulphur content were obtained with
15 t/ha cow-dung, 75 kg/ha nitrogen and 4 WAT
weeding regime. Based on the finding of this study,
it could be concluded that for optimum onion
production in the Sokoto Rima Fadama, a combination
of 15 t/ha cow-dung, 75 kg/ha nitrogen
coupled with the 4 WAT weeding regime is the most s
uitable.
