Penerbit: University of Lampung
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Releasing Pattern of Applied Phosphorus and Distribution Change of Phosphorus fractions in the Acid Upland Soils with Successive Resin Extraction
Oleh: Hartono, Arief
The releasing pattern of applied P in the acid upland soils and the soil properties influencing the pattern were studied. Surface horizons of six acid upland soils from Sumatra, Java and Kalimantan were used in this study. The releasing pattern of applied P (300 mg P kg-1) of these soils...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 87-94
Rekomendasi Pemupukan P Untuk Tanaman Jagung Pada Tanah Inceptisols Menggunakan Pendekatan Uji Tanah
Oleh: Syafruddin, .
Productivity of maize in Central Sulawesi has been significantly low. The evidence has been a challenge on maize development in this area. Rational fertilization based on soil conditions and nutrient requirement of plants croped, has saved use of fertilizer, increased efficiency of the farm and also...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 95-102
Local Rice Cultivars Grown On Tidal Swampland Near Coastal Area in South Kalimantan
Oleh: Purnomo, Erry, Setiawan, Muhammad Lestio, Yuliani, Nurmili
Local farmers in South Kalimantan (Banjarese farmers) use to grow local rice cultivars. The local rice growing areas are varied with distance from the coastal line. Consequently, the degree of salinity also varied. To overcome the salinity problem, farmers do their last transplanting earlier than th...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 103-109
Relationship between depth of soil moisture assessment and turgidity of coffee plant in selected agroclimates
Oleh: Erwiyono, Rudy, Wibawa, Aris
Observation on the relationship between the depth of soil moisture assessment and turgidity of coffee plant has been carried out at 3 different agroclimates by survey method, i.e. Andungsari experimental station (Andosol soil type, >1.000 m asl. high, and rainfall type of C), Sumberasin experimen...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 111-122
Phosphate Solubilizing Microorganism and available P on the Rizosphere of some Ages and Distances from the Center of Maize Roots
Oleh: Niswati, Ainin, Yusnaini, Sri, Arif, Mas Achmad Syamsul
Effect of the age and root distance of maize on the population of phosphate solubilizing microorganisms was studied. The rizosphere and non-rhizosphere soil of maize was setup in the special pots with dimension of 60 cm x 60 cm x 30 cm in the glasshouse. The Ultisols soil was planted with maize ...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 123-130
The Changes of Earthworm Population and Chemical Properties of Tropical Soils under Different Land Use Systems
Oleh: Yusnaini, Sri, Niswati, Ainin, Arif, Mas Achmad Syamsul
Hilly area Sumberjaya, West Lampung Province, South Sumatra, Indonesia, is one of the Province where deforestation increasing in the past 30 years as a result of the implementation of agricultural systems, especially coffee plantation. it is important to study the soil fauna in these natural rel...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 131-137
Landform Classification which Alighted from Digital Elevation Models: Case in Citarum Watershed, Cilalawi Sub Watershed, West Java
Oleh: Salwati, ., Saidi, Busyra Buyung
Application of GIS technology (Geographic Information System), that is Digital Elevation Models (DEMs) for the analysis of  landform or slope have been conducted in the Citarum watershed, Purwakarta West Java Province from August until November 2003. Research aim to make landform classification o...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 139-144
Land Capability Evaluation of Upper Sekampung Watersheds
Oleh: Banuwa, Irwan Sukri, Sinukaban, Naik, Tarigan, Suria Darma
Land degradation is a serious problem in the Upper Sekampung Watersheds. This is because the farmers cultivated in steep land to coffee crops without  in adequate soil and water conservation practices.  The land degradation is mostly caused by erosion. The erosion problem not only ...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 145-153
Reformulation of Crop and Management Factor in ANSWERS model
Oleh: Hidayat, Yayat, Sinukaban, Naik, Pawitan, Hidayat
Crop and management factor value is significantly corelated with outputs of ANSWERS model especially on soil erosion.  Using daily crop and management factors (daily C factors), the ANSWERS model performs well in predicting soil erosion which is showed by determination coeffient (R2 = 0.89), ...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 155-160
The Study of Abundance of Soil Minerals on Micro Toposequen of Karst Gunungsewu Pegunungan Selatan
Oleh: Mulyanto, Djoko
Landform of Gunungsewu karst topography dominated by positive forms consists of hills and negative forms of dolines. On the micro toposequen of karst,  most of dolines dominated by red soils which hue 2.5 YR – 5 YR, whereas on hills by soils which hue 5 YR – 7.5 YR. The aim of r...
Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 2: May 2008; 161-170