The process of decomposition which is incorrect is

Options

A. Fragmentation : Break down detritus into smaller particles
B. Leaching : water soluble inorganic nutrients go down into the soil horizon
C. catabolism : Enzymes degrade detritus into simpler inorganic substances
D. Humification : Release of inorganic nutrients from humus

Answer

To solve the question about the incorrect process of decomposition, we will analyze each of the statements provided regarding the processes involved in decomposition.

### Step-by-Step Solution:

1. **Identify the Processes of Decomposition**:
- The question asks us to identify which statement about the processes of decomposition is incorrect. The main processes involved in decomposition include fragmentation, leaching, catabolism, and humification.

2. **Evaluate Each Process**:
- **Fragmentation**: This is the first step in decomposition where organisms like earthworms break down dead organic matter (detritus) into smaller particles. This statement is correct.
- **Leaching**: After fragmentation, soluble inorganic nutrients are washed away with water into the soil. This process is also correct.
- **Catabolism**: This involves the breakdown of detritus by enzymes released from bacteria and fungi into simpler organic and inorganic substances. This statement is correct as well.
- **Humification**: This is the process of forming humus, which is a dark, amorphous substance that contributes to soil fertility. However, the statement incorrectly describes humification as the release of inorganic nutrients from humus. This is not accurate, as humification refers to the formation of humus itself, not the release of nutrients.

3. **Identify the Incorrect Statement**:
- The fourth statement about humification is incorrect because it misdefines the process. Humification is the formation of humus, not the release of inorganic nutrients from it.

4. **Conclusion**:
- Therefore, the incorrect statement regarding the process of decomposition is the one related to humification.

### Final Answer:
The incorrect process of decomposition is **humification**, as it is incorrectly defined in the statement.

---