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Papers by wilfredo sanidad
Soil and Tillage Research, 2000
Soil and Tillage Research, 2000
Soil and Tillage Research, 1994
ABSTRACT
Geoderma, 1996
Surface cracks develop in many clay soils as they dry. Since they are difficult to adequately sam... more Surface cracks develop in many clay soils as they dry. Since they are difficult to adequately sample in most volumetric samples, it is useful to measure them so that volumetric measurements of water content, for example, can be corrected. A method for measuring cracks in soils is described. A transect consisting of six linked semi-circles, each of 1 m diameter,
Paddy and Water Environment, 2006
Paddy and Water Environment, 2006
The multi-functionality of agriculture was studied from June to December 2005 in an upland commun... more The multi-functionality of agriculture was studied from June to December 2005 in an upland community in Central Luzon, Philippines, by looking across the entire basin of two small water impounding systems or SWIP (Maasin and Buted II). Several sub-studies were undertaken, namely (a) the role of dominant vegetative cover on the rate of surface runoff and erosion; (b) rainfall–runoff analysis in a sub-watershed (i.e., through runoff experimental plot) and within the main watershed (i.e., reservoir inflow analysis); and (c) the environmental functions of agriculture across the entire watershed. The results indicated that about 85% (i.e., throughfall) of rainfall could reach the ground as vegetations intercept the rest. The runoff experimental plot covering a sub-watershed revealed a good correlation between throughfall and runoff. On the other hand, monitoring of reservoir inflows through which surface runoff was measured indicated similar behavior. Integrating the result of runoff exp...
Soil and Tillage Research, 2000
Soil and Tillage Research, 2000
Soil and Tillage Research, 1994
ABSTRACT
Geoderma, 1996
Surface cracks develop in many clay soils as they dry. Since they are difficult to adequately sam... more Surface cracks develop in many clay soils as they dry. Since they are difficult to adequately sample in most volumetric samples, it is useful to measure them so that volumetric measurements of water content, for example, can be corrected. A method for measuring cracks in soils is described. A transect consisting of six linked semi-circles, each of 1 m diameter,
Paddy and Water Environment, 2006
Paddy and Water Environment, 2006
The multi-functionality of agriculture was studied from June to December 2005 in an upland commun... more The multi-functionality of agriculture was studied from June to December 2005 in an upland community in Central Luzon, Philippines, by looking across the entire basin of two small water impounding systems or SWIP (Maasin and Buted II). Several sub-studies were undertaken, namely (a) the role of dominant vegetative cover on the rate of surface runoff and erosion; (b) rainfall–runoff analysis in a sub-watershed (i.e., through runoff experimental plot) and within the main watershed (i.e., reservoir inflow analysis); and (c) the environmental functions of agriculture across the entire watershed. The results indicated that about 85% (i.e., throughfall) of rainfall could reach the ground as vegetations intercept the rest. The runoff experimental plot covering a sub-watershed revealed a good correlation between throughfall and runoff. On the other hand, monitoring of reservoir inflows through which surface runoff was measured indicated similar behavior. Integrating the result of runoff exp...