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Yigo

From Soil Testing

Yigo Series

Soil Classification: Clayey, gibbsitic, isohyperthermic Tropeptic eutrustox.

Description:
The Yigo series consists of deep and very deep, well drained, moderately permeable soils in depressional areas on plateaus. These soils formed in sediment overlying porous coralline limestone. Soil texture of top horizon is clay or silty clay. Depth to bedrock dominantly is more than 152 centimeters, but it ranges to as little as 102 centimeters. Content of clay is 40 to 60 percent. The Yigo soil covers approximately 0.9 percent of Guam's total land area.

Suitability: This soil series is moderately suited to commercial production of vegetables, grazing, and homesite development. It is poorly suited to commercial production of fruit. With proper management, (fertilizers and drip irrigation) most vegetables can be grown throughout the year. The main limitation of the Yigo soil is low soil strength. It can be used for recreational development, 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
0-15 40-60
0.90-1.10
6.45 6.0 18.3 10.0 135

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