Effect of tree canopy cover on the yield, crude protein and fibre content of forb species in Nigerian Guinea savanna
The relationship between tree canopy cover and forb species in savanna was investigated by examining the effect of tree canopy cover on the yield, crude protein, fibre and lignin content of forb species. The yield of some forb species show a tendency of being higher under tree canopy than in the open though no statistical significance can be shown. A higher forb yield is obtained under high tree canopies than under lower ones. No significant differences in mean crude protein, fibre and lignin content were observed between forb species growing under tree canopy and those in the open.