Jurnal Ilmu Tanah & Lingkungan: Recent submissions
Now showing items 21-40 of 54
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Effect of Placement Method of Crop Residue and Irrigation on Soil Physical Properties and Plant Production
(2005)A proper management of crop residue can increase crop production since it plays an important role on increasing water availability. The effect of crop residue application on soil productivity depends on many factors. In ... -
The Role of Rock Phosphate and Farm Yard Manure Combined-Phosphate-Solubilizing Bacteria in Increasing Nutrient Uptake and Soybean Yield
(2005)The aims of the experiment were to evaluate the effect of rock phosphate application and combination between phosphate-solubilizing bacteria with farm yard manure on nutrient uptake and yield of soybean. Factorial experiment ... -
A Decision Support System for Rice Cultivation on Acid Sulfate Soils in Malaysia
(2005)Ameliorative steps to put acid sulfate soils into productive use can be organized by a decision support system. The model uses microeconomic analysis to get an optimal rate of lime and fertilizer in maximizing profit. A ... -
Population Dynamics of Microarthropods (Oribatida and Collembola) in Rainfed Paddy Field Ecosystem in Pati, Central Java
(2005)A study on population dynamics of microarthropods (oribatids and collembolans) in rainfed paddy field ecosystem in Pati, Central Java was undertaken with the aim to evaluate which group of soil microarthropods that dominated ... -
Effect of Interlayer Caution Valence on Formation and Chemical Characteristics of Aluminumhydroxy-Vermuculite
(2005)Aluminumhydroxy-smectite (AHS), known also as pillared clay, has some specific c...haracteristics such as: wide specific surface area, high basal spacing, and stable at significant high temperature. The AHS was produced ... -
Phonska Fertilizer Leaching and Its Effect on Spinach Growth and Productivity (Amaranthus tricolor. L) on Latosol with Different Clay Content
(2005)Sufficient available water in soil is very essential for plant growth, not only as a nutrient solvent but also to maintain optimal turgor pressure. Occasionally, additional water supply from irrigation is necessary to ... -
The Rate of S-Element Transformation to Sulfate on Three Kinds of Soils with and Without Addition of Organic Matter
(2005)Defiency of sulfur were found at many areas of farming in Indonesia. The aim of this experiment was to Icnow the rate of S-element tranformation to sulfate on three kinds of soil without and added of organic matter. The ... -
The Potency of Azotobacter spp. Isolated from Tidal Land of South Kalimantan to Produce Indole Acetic Acids (IAA)
(2005)Tidal land area is considered as the most frigile ecosystems. To open this area as agricultural land has to be done carefully. To reduce the risk of declining the environmental quality of tidal swa,,!p area due to the ... -
Value of the zero point of charge (ZPC) and its relation with potassium sorption in coastal peatland of Jambi and Central Kalimantan
(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 ... -
Isolation and Activity Test of Acidophilic Iron and Sulfur Oxidizing Bacteria from Black Water Ecosystem of Central Kalimantan
(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 ... -
Development of Land Capacity Status for Labour Absorption in Horticulture Area Using Geographic Information System, A Case Study in Samarang Subdistrict, Garut, West Java
(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 ... -
Relationship Between Exchangeable Alumunium and Phosphorus Sorption Parameters of Indonesian Acid Soils
(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 ... -
Increasing P Retention in the Peat Column Amended with Mineral Soil and Some Rock Phosphates
(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 ... -
Some Spesific Soil Characteristics of Andisols as Series Differentiae: A Case Study of Cikajang and Cikole Regions, West Java
(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 ... -
Relationship between K/Ca Ratios in the Soil Solution with the Dynamic of K in Ultisol and Vertisol of Upland Area
(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 ... -
The Effect of Organic Matter (Pueraria javanica) and Rock Phosphate on the Growth and P-uptake of Corn Plant (Zea mays) in Andisol Pasir Saronggae
(2003)Phosphor (P) is the second esensial element after nitrogen which is needed by plants, however, its ava/i!ahi/ity is a problem in vulcanic ash soils such as Andisol. The objective of the research was to study the effect of ... -
Use of volcanic sands as a natural fertilizer: increasing release of nutrients
(2003)Volcanic sands, that contain relatively high content of dark minerals. can be used as a natural fertilizer. Unfortunately, the amount of the nutrients from this material available for the plant growth is very low. To ... -
Direct and Indirect Methods of Soil Microbial-Biomass Determination: Weakness and Srength
(2003)Dalam dua dasawarsa terakhir ini telah terjadi peningkatan minat para pakar ilmu tanah dan lingkungan dalam menentukan jumlah total mikroorganisme dalam contoh tanah. Minat tersebut muncul karena para pakar menyadari ... -
Isolation and Selection of Growth Promoting Phyllosphere Bacteria from Leaf of Rice (Oryza sativa L.) Cultivar IR-64
(2003)Phylosphere bacteria are bacteria live on the leave surface. Phylosphere bacteria have been reported to improve the growth of several plants such as rice. However, in Indonesia, the study concerning phylosphere bacteria ... -
The Changes in Chemical and Physical Properties of Fibric Peat Pollowing Burning
(2003)Fire is still used until today for land preparation because it is cheap, easy and relatively quick to be done, meanwhile the impact is still not much yet known especially for peat land Due to that reason the research ...
