Fig. 3From: Allometric equations for estimating on-farm fuel production of Gliricidia sepium (Gliricidia) shrubs and Cajanus cajan (pigeon pea) plants in semi-arid TanzaniaPigeon pea—Natural log-transformed correlation between root collar diameter20 and above-ground woody biomass (left) as well as stem height and above-ground woody biomass (right)Back to article page