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close this bookAmaranth to Zai Holes, Ideas for Growing Food under Difficult Conditions (ECHO; 1996; 397 pages)
View the documentOther ECHO publications
View the documentAbout this book
View the documentAcknowledgements
close this folder1: Basics of agricultural development
Open this folder and view contentsBackground in agricultural development
close this folderSelecting suitable tropical crops
close this folderTechnical note: selecting the right crop for your location in the tropics or in the subtropics
View the documentIntroduction
View the documentPrincipal factors determining crop potential
View the documentPrediction of suitable crops
View the documentTable I. Ecological or life zones of the tropics, sub tropics, and warm temperate zones
View the documentTable II. Annual crops (or perennial crops grown as annuals) - climatic needs crop : rainfall - temperature - other considerations
View the documentTable IV. Suggested crops for specific climatic zones
View the documentDiscussion
View the documentAppendix I. Maximum ecological amplitudes for some tropical crops
View the documentTechnical note: Comparison charts of tropical crops
View the documentWhat seed would you take to an uninhabited tropical island?
View the documentHow can I garden in the hot humid tropics?
View the documentResource centers for agricultural development
Open this folder and view contents2: Vegetables and small fruits in the tropics
Open this folder and view contents3: Staple crops
Open this folder and view contents4: Multipurpose trees
Open this folder and view contents5: Farming systems and gardening techniques
Open this folder and view contents6: Soil health and plant nutrition
Open this folder and view contents7: Water resources
Open this folder and view contents8: Plant protection and pest control
Open this folder and view contents9: Domestic animals
Open this folder and view contents10: Food science
Open this folder and view contents11: Human health care
Open this folder and view contents12: Seeds and germplasm
Open this folder and view contents13: Energy and technologies
Open this folder and view contents14: From farm to market
Open this folder and view contents15: Training and missionary resources
Open this folder and view contents16: Oils
Open this folder and view contents17: Above-ground (urban) gardens
View the document18: What is ECHO?
View the documentAdditional ECHO publications
Open this folder and view contentsECHO development notes - issue 52
Open this folder and view contentsECHO development notes: issue 53
Open this folder and view contents28 additional technical notes about tropical agriculture
Open this folder and view contentsPrinciples of agroforestry
Open this folder and view contentsGood nutrition on the small farm
 
Table I. Ecological or life zones of the tropics, sub tropics, and warm temperate zones

ECOLOGICAL ZONES (1,2)

MEAN ANNUAL TEMPERATURE (Deg.C)

AVERAGE ANNUAL RAINFALL

SYMBOL

Tropical Desert Shrub

24 or more

125 - 250

Tx

Tropical Thorn Steppe

24 or more

250 - 500

Tt

Tropical Very Dry Forest

24 or more

500 - 1000

Tv

Tropical Dry Forest

24 or more

1000 - 2000

Td

Tropical Moist Forest

24 or more

2000 - 4000

Tm

Tropical Wet Forest

24 or more

4000 - 8000

Tw

Tropical Rain Forest

24 or more

8000 or more

Tr

Subtropical Desert Scrub

18 - 24

125 - 250

Sx

Subtropical Thorn Woodland

18 - 24

250 - 500

St

Subtropical Dry Forest

18 - 24

500 - 1000

Sd

Subtropical Moist Forest

18 - 24

1000 - 2000

Sm

Subtropical Wet Forest

18 - 24

2000 - 4000

Sw

Subtropical Rain Forest

18 - 24

4000 or more

Sr

Warm Temperate Desert Bush

12 - 18

125 - 250

Wx

Warm Temperate Woodland

12 - 18

250 - 500

Wt

Warm Temperate Dry Forest

12 - 18

500 - 1000

Wd

Warm Temperate Moist Forest

12 - 18

1000 - 2000

Wm

Warm Temperate Wet Forest

12 - 18

2000 - 4000

Ww

Warm Temperate Rain Forest

12 - 18

4000 or more

Wr

 

T = Tropical
d = dry forest
S = Subtropical
m = moist forest
W = Warm temperate
r = rain forest
C = Cool temperate
t = thorn steppe (if tropical) or woodland (if warm temperate)
B = Boreal
v = very dry forest
w = wet forest
x = desert scrub (if tropical or subtropical) or bush (if temperate)

 

NOTE: In the Appendix you will see life zone symbols of more than two letters. For example, okra grows in life zones Wdm and Txm. The capital letters refer to tropical, subtropical or warm temperate climates. The small letters are for types of vegetation as determined by the life zones. Using the chart you can see that okra will grow in warm temperate dry forests, warm temperate moist forests, tropical dessert scrub and tropical moist forest climates.

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