Penerbit: Department of Soil Science
P-ISSN: 0852-257X
E-ISSN: 2086-6682
DOI: 10.5400
Fakultas Pertanian Umum Arsitektur
Artikel (421)
Relationship between Organic-C and Available-P Due to Tidal Fluctuation in South Kalimantan
Yusran, Fadly Hairannoor
Tidal fluctuation creates different soil chemical properties which is totally deviate from normal circumstances.  Organic matter decomposition occurs with limited O2 supply, hence disturbing Carbon cycle which has a central role in the process and nutrient mineralisation.  The research aimed w...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 253-257 | 2013
Improving Phosphate Efficiency by Phosphate Solubilizing Bacteria and Organic Matter Estimated by Radio Isotop (32P) Technique in Some Soils
Mudjiharjati, Arie, Setiawati, Tri Candra, Pandutama, Martinus Harsanto
Phosphorous (P) contents in many soils are varies highly along with their ability to provide available P to plant growth. Soils may contain very high in total P, but low in available P due to high P adsorbed by soil matrix and all their adsorbing agents. This research which using natural materials w...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 245-252 | 2013
Response of Some Rice Cultivars in New Opening Paddy Fields with High Fe2+ Using Multi-packet Technology
Utama, M Zulman Harja, Wahidi, Ismed, Sunadi, .
The main obstacle to increase rice yield in new opening paddy fields, is that high levels of dissolved ferrous ions(Fe2+) which toxic to plants. This research aimed to study the growth and yield of several rice cultivars tolerant toFe2+ in the new opening paddy fields with multi-packet technology. T...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 239-244 | 2013
Plot Scale Phosphorous and Potassium Balances of Newly Opened Wetland Rice Farming Originated from Wetland
Sukristiyonubowo, ., Nugroho, Kusumo, Ritung, Sofyan
Development of newly opened wetland rice fields both from dry land and wetland in Indonesia are important to meetrice growing demand, increase soil productivity, keep rural food security and provide jobs as well as generateincome. Most soils of newly opened rice fields are low in P and K contents, b...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 227-237 | 2013
Citrate Root Exudation under Zn and P Deficiency
Siane, Bless Aplena Elen
Zinc and phosphorus are essential nutrients with low bioavailability in calcareous soils. Some plants exude organicacids to increase the solubility of these two nutrients. The objective of this study was to examine citrate exudation rates of different lupin (Feodora and Energy) and rapeseed (Dunkeld...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 219-225 | 2013
Ferro Content in Soil and Mustard Leave (Brassica Junjea) Treated by Agricultural Waste on the Biosensitizer-Iron Photoreduction
Rorong, Johnly Alfreds, Sudiarso, ., Prasetya, Budi
Atom absorption spectrophotometer (AAS) had been used to analyzed Ferro in the soil and in the green mustardleaf (Brassica junjea) treated with phenolics extract from the agricultural wastes of clove leaf (Eugenia aromatica),rice straw (Oryza sativa) and water hyacinth leaf (Eichhornia crassipessolm...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 211-218 | 2013
The Changes of P-fractions and Solubility of Phosphate Rock in Ultisol Treated by Organic Matter and Phosphate Rock
Djuniwati, Sri, Nugroho, Budi, Pulunggono, Heru Bagus
Phosphorus (P) is one of the essential elements for plant, however, its availability is mostly very low in acid soils. It is well documented that application of phosphate rock and organic matter are able to change the level of availability of P-form in acid soils.  The objective of the research w...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 203-210 | 2013
The Influnece of Peat Layer on Hidrogen and Aluminium Concentration Originating from the Substratum Sulphidic Materials
Fahmi, Arifin Fahmi, Radjagukguk, Bostang, Purwanto, Benito Heru
Much of peatland in Indonesia has sulphidic materials as substratum. Soil acidity and metal elements in peatlandmay originate from the sulphidic materials which occur underneath of the peat layer. Peat soil buffering capacity andchelating ability of the peat materials regulate the soil acidity and m...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 197-202 | 2013
Root-induced Changes in the Rhizosphere of Extreme High Yield Tropical Rice: 2. Soil Solution Chemical Properties
Purnomo, Erry, Choiron, Dodik, Yulia, Raina
Our previous studies showed that the extreme high yield tropical rice (Padi Panjang) produced 3-8 t ha-1 without fertilizers. We also found that the rice yield did not correlate with some soil properties. We thought that it may be due to ability of root in affecting soil properties in the root zone....
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 189-196 | 2013
Application of Organic Fertilizer Tithonia Plus to Control Iron Toxicity and Reduce Commercial Fertilizer Application on New Paddy Field
Hakim, Nurhajati, ., Agustian, Mala, Yanti
Ferrous toxicity is a one of the problems most often found in lowland rice systems in tropical and sub-tropical regionespecially in new paddy field (NPF) on Ultisols and Oxisols. Flooding during rice growth creates a chemicallyreduced state in soils causing reduction of insoluble (Fe3+) to soluble (...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 2: May 2012; 135-142 | 2012