Criteria | Unit | Optimal | Suboptimal | Inadequate |
Average Annual Temperature | ˚C | 25 - 30 | 18 - 24 30 - 35 | >than 35 |
Annual Rainfall | mm | 1000 - 2000 | 650 to 1000 2000 to 2500 | Less than 650 Higher than 2500 |
Altitude | msnm | 0 - 1500 | 1500 - 2000 | Higher than 2000 |
Soils | Types | Fluvisols Regosols Luvisols Nitisols Andosols Phaeozem Castañozems | Cambisols | Solonchak’s Leptosols Vertisols Gleysols Arenosols Calcisols |
Texture | Types | Loamy | Sandy | Clay |
Depth | m | 1 | 1 to 0.5 | |
pH | Indicator | 5.5 to 6.5 | 5.0 to 5.4 6.5 to 7.5 | >than 7.5 |
Light Hours | Hours | Higher than 3000 | 2500 to 3000 | Less than 2500 |
Drainage | Types | Good | Good | Deficient |