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Ecological impact of rubber (Hevea brasiliensis) plantations in North East India. 1. Influence on soil physical properties with special reference to moisture retention

Ecological impact of rubber (Hevea brasiliensis) plantations in North East India. 1. Influence on soil physical properties with special reference to moisture retention

Indian Journal of Rubber Research 3(1): 53-63

Hevea cultivation increased soil organic matter content, bulk density and porosity. Water retention at field capacity (-0.033 MPa) was increased by 1.76 and 5.45% at 0-15 cm depth and by 3.42% at 15-30 cm depth. Water retention at -0.033 and -1.5 MPa was positively correlated with the clay content of the soil both inside and outside the plantation. The water desorption pattern at -0.5 MPa showed that 90.3% was desorbed from inside the plantation and only 67.38% from the outside the plantation.

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