N ratio where there is just enough nitrogen for maximum humus formation, but not any excess. Nitrogen b. Potassium c. Immobilization d. denitrification 163. Nitrogen content of the residue 167. Nitrogen content of the residue 168.
Humus has a very high specific surface area and possesses a net positive electrical charge.
Use the following answers for the next 4 questions. False, made true by making both the changes in b. and c. 194. Soil zone near roots 198.