Variable | Unit | Optimal | Suboptimal | Unfit |
Climate* | Types | Aw, Am, Af | Cw, Cf | Bs, Bw, Cs |
Average annual temperature | ˚C | 22 - 34 | 16 - 22 34 - 40 | <16 > 40 |
Elevation | msnm | 0 - 1000 | 1000 - 1800 | >1800 |
Average annual precipitation | mm | 1200 - 3000 | 800 - 1200 3000 - 4000 | <800 >4000 |
Soil | Types | -Andosols -Fluvisols -Luvisols -Nitisols -Acrisols | -Cambisols -Non-flooding Gleysols -Non-flooding Vertisols | -Solonchaks -Flooding Gleysols -Flooding Vertisols -Phaeozems -Arenosols -Leptosols -Regosols -Rendzinas |
Soil texture | Types | Medium | Medium and Heavy | Light and Heavy |
Soil depth | m | >1 | 1 - 0.5 | >50 |
Soil pH | Indicator | 5.0 - 6.0 | 4.0 - 5.0 6.0 - 7.5 | <4.0 >7.5 |
Drainage | Types | Good | Good | Deficient |