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Erosion Prediction Study of Tugu Utara (Ciliwung Hulu) Sub Watershed
(IPB (Bogor Agricultural University), 2004)
The research of erosion prediction method at watershed scale was carried out at Tugu Utara (Upper Ciliwung) sub watershed in Puncak, West Java, Indonesia from August 2000 to February 2001. The objectives of this study were: ...
Value of the zero point of charge (ZPC) and its relation with potassium sorption in coastal peatland of Jambi and Central Kalimantan
(IPB (Bogor Agricultural University), 2004)
One of the important chemical aspect of peatland management which has not been paid attention to is Zero Point of Charge (ZPC). By determining soil ZPC value, the sorption and bounding of cations can be estimated in certain ...
Relationship between K/Ca Ratios in the Soil Solution with the Dynamic of K in Ultisol and Vertisol of Upland Area
(IPB (Bogor Agricultural University), 2004)
The objectives of this experiment were: (I) to study the effect of K and Ca fertilization on the dynamic of K, (2) to study the relationship between the dynamic of K in the soils with corn growth, and (3) to determine the ...
Increasing P Retention in the Peat Column Amended with Mineral Soil and Some Rock Phosphates
(IPB (Bogor Agricultural University), 2004)
Peat soils have a very low capacity in retaining P. Mineral soils rich in Fe could be used as ameliorant in increasing this capacity.The aim of this experiment was to study the use of three rock phosphates and SP-36 on ...
Relationship Between Exchangeable Alumunium and Phosphorus Sorption Parameters of Indonesian Acid Soils
(IPB (Bogor Agricultural University), 2004)
In acid soils, phosphorus (P) sorption is generally attributed to hydrous oxides of Fe and Aluminum (AI) particularly in tropical soils with low pH. However, reports concerning the role of exchangeable AI in P sorption ...
Development of Land Capacity Status for Labour Absorption in Horticulture Area Using Geographic Information System, A Case Study in Samarang Subdistrict, Garut, West Java
(IPB (Bogor Agricultural University), 2004)
An index for labour absorption capacity of an agricultural cropping system requires worker number from direct activities and non-direct activities in a field The number of workers from direct activities can be generated ...
Some Spesific Soil Characteristics of Andisols as Series Differentiae: A Case Study of Cikajang and Cikole Regions, West Java
(IPB (Bogor Agricultural University), 2004)
The objective of this research was to study speczfic soil characteristics of Andisols as series differentiae. Five pedons of Cikajang and Cikole regions were studied. Both regions belong to the wet climate, udic soil ...
Isolation and Activity Test of Acidophilic Iron and Sulfur Oxidizing Bacteria from Black Water Ecosystem of Central Kalimantan
(IPB (Bogor Agricultural University), 2004)
The acidophilic iron and sulfur oxidizing bacteria were isolatedfrom black water ecosystem, an 'extreme' ecosystem affected indirect or directly by peat land Isolation and selection were done on minimal media (liquid and ...