MATERIAL AND METHODS 
Experiment site 
The experiment was conducted on a guinea 
grass (Panicum maximum) pasture 
established in 2000 at the Teaching and 
Research Farm of the Department of Crop 
Science Faculty of Agriculture University of 
Nigeria, Nsukka. Nsukka is located at 
Latitude 060 52`N and longitude 070 24`E, 
and altitude of 447.2 m above sea level. It is 
characterized by the low land humid tropical 
conditions. The soil is classified as an 
Ultisol (Asiegbu 1989).