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Chacha Variant

From Soil Testing

Chacha Variant

Soil Classification: Very-fine, kaolonitic, isohyperthermic Typic Tropaqualfs.

Description:
The Chacha Variant consists of very deep, poorly drained, slowly permeable soils in basins on limestone plateaus. These soils formed in alluvial sediment overlying limestone. Depth to bedrock is 150 to 200 centimeters or more. Soil texture of top horizon is silty clay or clay. Content of clay is 60 to 90 percent. The Chacha Variant soil covers approximately 0.2 percent of Guam's total land area.

Suitability: This soil series is poorly suited for subsistence and commercial farming, and grazing. Most vegetables cannot be grown during the rainy season. Vegetables that can be grown during the late dry season include watermelons, Chinese and head cabbages, cantaloupes and cucumbers. It is not suited to banana, tangerine, and other fruit trees that are sensitive to soil wetness. The main limitations are wetness during the rainy season, the hazard of soil compaction when the soil is wet, and the lack of water late in the dry season. It can be used for wildlife habitat and watershed.

Depth
(cm)

Clay
(%)
Moist
bulk
density
(g/cm3)
pH Organic
matter
(%)
CEC
meq/100g
Extractable
P mg/kg
Extractable
K mg/kg
0-31 65-80
1.00-1.20
6.7 6.0 -- -- --

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