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Togcha

From Soil Testing

Togcha Series

Soil Classification: Very-fine, mixed, isohyperthermic Ultic Paleustalfs.

Description:
The Togcha series consists of very deep, well drained, moderately permeable soils on volcanic uplands. These soils formed in slope alluvium dried from weathered tuff and tuff breccia. Depth to bedrock is 102 centimeters or more. Soil texture of top horizon is silty clay loam or silty clay. Content of clay is 55 to 60 percent. The Togcha soil covers approximately 2.0 percent of Guam's total land area.

Suitability: This soil series is well suited to subsistence and commercial farming. Crops that can be grown are those adapted to clayey, acidic soils, such as watermelons, Chinese and head cabbages, and fruit trees. The growth and production of banana, papaya, and other fruit trees can be increased by irrigating during the dry season. The main limitations are the hazard of erosion, low soil strength, soil acidity, and droughtiness during the dry season. It is moderately suited to homesite development. It is well suited for grazing.

Depth
(cm)

Clay
(%)
Moist
bulk
density
(g/cm3)
pH Organic
matter
(%)
CEC
meq/100g
Extractable
P mg/kg
Extractable
K mg/kg
0-13 55-60
0.95-1.10
5.55 5.5 25.5 1.2 335

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