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Akina

From Soil Testing

Akina Series


Soil Classification: Very fine, kaolinitic, isohyperthermic Oxic Haplustalfs.

Description:
The Akina series consists of very deep, well drained, moderately slowly permeable soils on volcanic uplands. These soils formed in residuum derived from tuff and tuff breccia. Depth to saprolite is 51 to 102 centimeters. Soil texture of top horizon is silty clay or clay. Content of clay is 60 to 80 percent. The Akina soil covers approximately 1.4 percent of Guam's total land area.

Suitability: This soil series is moderately suited to subsistence and commercial farming, and homesite development. It is well suited for grazing. The main limitations are hazard of erosion, low soil fertility, soil acidity, and lack of water during the dry season. Compost can be applied to improve soil fertility. Crushed coral limestone can be mixed into soil to provide calcium and to reduce soil acidity. Crops that can be grown include watermelon, Chinese and head cabbage, and fruit trees that are adapted to clayey, acid soils. It can be used for recreational development.

Depth
(cm)

Clay
(%)
Moist
bulk
density
(g/cm3)
pH Organic
matter
(%)
CEC
meq/100g
Extractable
P mg/kg
Extractable
K mg/kg
0-10 45-60
0.85-1.0
6.2 8.0 21.6 0.9 35

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