Soil amendments | Initial soil organic matter (%) | Final soil organic matter (%) | % change In SOM |
NPK 15:15:15 (400 kg/ha) Chromoleana (10 t/ha) Chromoleana (7 t/ha + 120 kg/ha NPK) Parkia (10 t/ha) Parkia (7 t/ha + 120 kg/ha NPK) Neem seed cake (10 t/ha) Neem seed (7 t/ha + 120 kg/ha NPK) Cow dung (10 t/ha) Cow dung (7 t/ha + 120 kg/ha NPK) Poultry dung (10 t/ha) Poultry dung (7 t/ha + 120 kg/ha NPK) Melon shell (10 t/ha) Melon shell (7 t/ha + 120 kg/ha NPK) Unamended control SE (27 df) LSD (0.05) | 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 1.93 -- -- | 2.43 3.18 3.82 2.92 3.02 2.92 2.73 3.05 3.15 3.96 4.01 2.47 2.06 2.01 0.13 0.18 | 0.49 1.25 1.89 0.99 1.09 0.99 0.80 1.12 1.22 2.03 2.08 0.54 0.13 0.08 0.05 0.07 |