Arrange the following crop combination methods based on their chronological order:
- Coppock’s Method
- Weaver’s Method
- Rafiullah’s Method
- Doi’s Method
1
1, 2, 3, 4
2
2, 3, 4, 1
3
1, 4, 2, 3
4
4, 1, 3, 2
Arrange the following crop combination methods based on their chronological order: