Mudball technique was proposed by

Options

A. Rice Research Institute, Cuttack
B. CSIR, New Delhi
C. Punjab Agriculture University, Ludhiana
D. The International Rice Research Institute in Philippines

Answer

To solve the question regarding who proposed the mudball technique, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the origin of the mudball technique, specifically who proposed it.

2. **Review the Options**: We have four options to consider:
- Option 1: Rice Research Institute, CUTEC
- Option 2: CSIR, New Delhi
- Option 3: Punjab Agricultural University, Ludhiana
- Option 4: International Rice Research Institute, Philippines

3. **Recall the Mudball Technique**: The mudball technique involves creating small balls of mud that contain fertilizers (especially urea) which are then placed in rice fields. These mudballs absorb water and release nutrients to the plants.

4. **Identify the Correct Source**: Based on the information provided, the mudball technique was proposed by the International Rice Research Institute located in the Philippines.

5. **Select the Correct Option**: Therefore, the correct answer is Option 4: the International Rice Research Institute in the Philippines.

### Final Answer:
The mudball technique was proposed by the International Rice Research Institute in the Philippines (Option 4).

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