Effect of dry - wet condition to peat soil physical characteristics of different degree of decomposition
2002
Nugroho, K. (Pusat Penelitian Tanah dan Agroklimat, Bogor (Indonesia))) | Widodo, B.
A study was conducted on the effect of drying and wetting processes of peat soil on different degrees of decomposition using undisturbed soil column samples. Most of the work was executed in a laboratory environment. The soils were subjected in the greenhouse, to air temperature of about 35 deg. C. The drying processes are assumed the same as those in natural (air) drying. The peat soils showed different reaction to the treatments and changes in different characteristics were observed, including bulk density, moisture content, and soil porosity, fiber content, organic ripeness and soil shear strength. The characteristics are used to determine changes in soil physical characteristics. The consecutive processes of wetting, drying and re-wetting produce specific changes that are related to subsidence, shrinkage and cracking. In order to prevent these changes taking place in the field it is recommended to use water management strategies that consider soil physical behavior. Conditions, such as a low intensity drainage should prevent the peat subsidence and destruction of peat soil physical characteristics
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