Figure 1From: Effect of rubber wood biochar on nutrition and growth of nursery plants of Hevea brasiliensis established in an UltisolUptake of N, P, K and Mg by the Hevea plants at the end of the nursery period as affected by biochar and fertilizer application. (Error bars indicate the SE of the mean, n = 4; Columns with same letter in each nutrient are not significantly different at p < 0.05).Back to article page