Variable

Unit

Optimal

Suboptimal

No suitable

Climate

Types*

Bs, Aw, Cf, Cs, Cw

Average annual temperature

˚C

25 - 30

11 - 25

30 - 40

<11

>40

Altitude

m

0 - 600

600 - 1000

>1000

Average annual precipitation

mm

600 to 1200

400 to 600

1200 to 1500

<400

>1500

Soil

Types

- Fluvisols

- Luvisols

- Nitisols

- Regosol

- Cambisols

- Solonchaks

- Flooding Gleysols

- Flooding Vertisols

- Leptosols

- Acrisols

- Planosols

- Histisols

- Calcaric Regosol

- Kastañozems

- Andosols

Soil texture

Types

Light and

medium

Medium

Heavyand very light

Soil depth

m

˂1

1 to 0.20

˂0.20

Soil pH

Indicator

7.0 to 8.5

5.5 to 7.0

8.5 to 9.0

˂5.5

˃9.0

Drainage

Types

Good

Good

Deficient