Penerbit: Department of Soil Science
P-ISSN: 0852-257X
E-ISSN: 2086-6682
DOI: 10.5400
Fakultas Pertanian Umum Arsitektur
Artikel (26)
Improvement of Soil Chemistry Characteristic of Upland with Rock Phosphate, Phosphate-Solubilizing Bacteria and Farm Yard Manure For Increase of Soybean Yield
Noor, Aidi
The experiment aims  to know the role of rock phosphate,  phosphate-solubilizing bacteria and farm yard manure application in  improve  quality of acid upland  and its influence to soybean yield. Experiment was conducted  in the greenhouse using Ultisols from Kentrong at 2001 year....
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 1: January 2008; 49-58 | 2008
Manures Effectivity to Enhanced the Availability of Phosphorus, Crops Growth and Yield of Rice and Corn in Acid Upland Soil
Sulaiman, Yoyo
The research was conducted in Tamanbogo Station Research in the 2007 Rainy Season in upland rice-corn intercropping farming. The research design used Randomized Complete Block Design with 3 replications. The treatments were 1). 15 t ha-1 manures + Residues of rock phosphate (RRP),  2). Without ma...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 1: January 2008; 41-47 | 2008
Effects of land applications waste water of crude palm oil factory on some nutrient available in soil and nutrient content in palm oil
Banuwa, Irwan Sukri, Pulung, Mamat Anwar
An experiment was aimed to study effect of waste water of crude palm oil (CPO) factory on some nutrient available in soil and nutrient content in palm oil.  The experiment was conducted  using a completely randomized block design with six levels of waste water treatments (0, 250, 500, 750, 1.0...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 1: January 2008; 35-40 | 2008
Existing Versus Added Soil Organic Matter in Relation to Phosphorus Availability on Lateritic Soils
Yusran, Fadly Hairannoor
Lateritic soils (Ultisols and Oxisols) are commonly characterised by high phosphate sorbing capacity due to the type of clay and present high content of aluminium (Al) and iron (Fe) oxides.  Addition of fresh organic matter (OM) may contribute to management of these soils by releasing more bicarb...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 1: January 2008; 23-34 | 2008
Solubility of Rock Phosphate and its Effect to the Growth and Yield of Maize on Ultisols
Kasno, Antonius, Setyorini, Diah, Dwiningsih, Sutisni
Phosphor is a macro nutrients and it becomes the main limiting factor for maize growth on Ultisols. Rock phosphate is one of P fertilizer sources contains high P and Ca content, slow release and soluble under acid condition, suitable for acid soil. The objective of this research is to study the solu...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 1: January 2008; 11-22 | 2008
Dissolution Kinetics of Milled-Silicate Rock Fertilizers in Organic Acid
Priyono, Joko, Gilkes, Robert John
A dissolution experiment was carried out to identify the effects of milling condition on dissolution kinetics of silicate rock fertilizers. Initially ground materials (Ø < 250 μm for basalt, dolerite, gneiss, and Ø < 150 μm for K-feldspar) were further milled with a ball mill (Spex...
JOURNAL OF TROPICAL SOILS; Vol. 13 No. 1: January 2008; 1-10 | 2008