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Arylsulphatase activity of different latosol soils of Ghana cropped to cocoa (Theobroma cacao) and coffee (Coffea canephora var. robusta)

by Appiah, M.R; Ahenkorah, Y.
Publisher: 1989Subject(s): THEOBROMA CACAO | COFFEA CANEPHORA | SULFATOS | ACTIVIDAD ENZIMATICA | FERRALSOLES | AZUFRE | DISPONIBILIDAD DE NUTRIENTES | MINERALIZACION | GHANA | THEOBROMA CACAO | COFFEA CANEPHORA | SULPHATES | ENZYME ACTIVITY | FERRALSOLS | SULPHUR | NUTRIENT AVAILABILITY | MINERALIZATION | GHANA | THEOBROMA CACAO | COFFEA CANEPHORA | SULFATE | ACTIVITE ENZYMATIQUE | FERRALSOL | SOUFRE | DISPONIBILITE D'ELEMENT NUTRITIF | MINERALISATION | GHANA In: Biology and Fertilizer Soils (Kenia) v. 7 p. 186-190Summary: A study was undertaken to investigate arylsulphatase activity in 15 soils cropped to cocoa (Theobroma cacao) and coffee (Coffea canephora var. robusta) in Ghana. The arylsulphatase activity was correlated positively and significantly with organic C, total N, and cation exchange capacity, and correlated negatively with acetate soluble sulphate. The enzyme was deactivated at an incubation temperature of over 60 grade centigrade. Preheating and oven-drying of soils decreased arylsulphatase activity. Addition of 1.0 ml toluene during the assay resulted in a sharp decline in arylsulphatase activity. The additon of trace elements at a concentration of 1 ppm caused a reduction in soil arylsulphatase activity compared with that of the untreated samples.
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A study was undertaken to investigate arylsulphatase activity in 15 soils cropped to cocoa (Theobroma cacao) and coffee (Coffea canephora var. robusta) in Ghana. The arylsulphatase activity was correlated positively and significantly with organic C, total N, and cation exchange capacity, and correlated negatively with acetate soluble sulphate. The enzyme was deactivated at an incubation temperature of over 60 grade centigrade. Preheating and oven-drying of soils decreased arylsulphatase activity. Addition of 1.0 ml toluene during the assay resulted in a sharp decline in arylsulphatase activity. The additon of trace elements at a concentration of 1 ppm caused a reduction in soil arylsulphatase activity compared with that of the untreated samples.

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