McDonald, M.; Stevens, P.A.; Healey, J.R.; Devi Prasad, P.V.
Author Affiliation, Ana.
Life Sciences (Botany and Zoology); Faculty of Pure and Applied Sciences
Maintenance of soil fertility on steeplands in the Blue Mountains of Jamaica: The role of contour hedgerows
Date of Publication
An experiment was established in the Blue Mountains of Jamaica to investigate the consequences of secondary forest clearance for agriculture, and the effectiveness of the contour hedgerow system in controlling soil erosion and maintaining soil fertility on steep slopes. Surface water runoff, soil erosion, rainfall interception and soil conditions following forest clearance were recorded . The results show that considerable, though secondary, protection is offered to soil and water resources by the forest. It acts as a buffer against fluctuations in runoff associated with rainfall events., and this is significant in large-scale events that cause considerable erosion. Agricultural use of cleared land results in increased erosion, and the incorporation of hedgerows of Calliandra calothyrsus reduced runoff and erosion compared to the conventionally farmed plots. The presence of the hedgerows had a positive effect on crop production.....