Table 9 Effect of biochar, farmyard manure compost and inorganic fertilizer on the dry matter percentage of total N, P, K and Ca in the collard leaf after harvest
From: Residual effects of corncob biochar on tropical degraded soil in central Uganda
Treatment | Nitrogen (%) | Potassium (%) | Calcium (%) | Phosphorus (%) |
|---|---|---|---|---|
CTRL | 0.66e | 0.94e | 1.32e | 0.38d |
CM | 1.18bc | 2.67bc | 3.56cd | 0.91 |
NPK | 0.72e | 1.83d | 1.55e | 0.64cd |
BC1 | 0.82de | 2.40cd | 3.34d | 0.74bcd |
BC2 | 0.91de | 2.87abc | 4.10bc | 1.17ab |
BC1 + CM | 1.88a | 3.30ab | 4.34b | 1.27ab |
BC2 + CM | 2.01a | 3.51a | 4.99a | 1.41a |
BC1 + NPK | 1.04cd | 3.16abc | 3.69cd | 0.81abc |
BC2 + NPK | 1.35b | 3.12abc | 3.98bc | 1.06bcd |
SignificantX | *** | ** | *** | ** |
SEDY | 0.97 | 0.19 | 0.15 | 0.13 |