Artikel (44)
In order to clarify the characteristics and stocks of soil nutrient under various land use types in a super wet tropical rain forest in Padang, West Sumatera. We investigated the nutrient characteristics of the several samples of soils under different land use such as cacao plantation (CP), cinnamon...
JOURNAL OF TROPICAL SOILS; Vol. 15 No. 1: January 2010; 55-62 | 2018
Site Specific Nutrient Management for Maize on Ultisols Lampung (A M Murni, JM Pasuquin, and C Witt): Lampung is the third major maize producing province in Indonesia after East Java and Central Java. In Lampung maize is cultivated mainly in upland areas with ultisols and only some cultivated on...
JOURNAL OF TROPICAL SOILS; Vol. 15 No. 1: January 2010; 49-54 | 2018
Assessing Biodegradation Susceptibilities of Selected Petroleum Hydrocarbons at Contaminated Soils (M.H. Langsa): The susceptibility to biodegradation of selected saturated hydrocarbons (SHCs), polycyclic aromatic hydrocarbons (PAHs) and asphaltenes in a Barrow crude oil and extracts isolated from s...
JOURNAL OF TROPICAL SOILS; Vol. 15 No. 1: January 2010; 39-47 | 2018
Extreme High Yield of Tropical Rice Grown Without Fertilizer on Acid Sulfate Soil in South Kalimantan, Indonesia (E Purnomo, Y Hashidoko, T Hasegawa and M Osaki): Local rice arieties are commonly grown by the farmers located in acid sulfate soil area of South Kalimantan. In South Kalimantan, more th...
JOURNAL OF TROPICAL SOILS; Vol. 15 No. 1: January 2010; 33-38 | 2018
Lad Contamination in Roadside Soil and Plant and Effect of Organic Matter Amendment (Sabaruddin, D Budianta and Mardia): Roadside soils and plants may be the most important sink of lead (Pb). It has been widely known that soil organic matter (SOM) plays important roles in determining concent...
JOURNAL OF TROPICAL SOILS; Vol. 15 No. 1: January 2010; 25-32 | 2018
Aluminum Detoxification by Humic Substance Extracted from Compost of Organic Wastes (S Winarso, E Handayanto and A Taufiq):Â Humic substance could control the activity of metal as well as exchangeable aluminum (Alexch) on acid soil. The humic substance extracted from compost of agricultural waste...
JOURNAL OF TROPICAL SOILS; Vol. 15 No. 1: January 2010; 19-24 | 2018
Effect of Coated Urea with Humic-Calcium on Transformation of Nitrogen in Coastal Sandy Soil: A Soil Column Method (Sulakhudin, AÂ Syukur, DÂ Shiddieq and TÂ Yuwono):Â In coastal sandy soil, mainly nitrogen losses due to leaching resulted to low fertilizer efficiency. Slow-release N fert...
JOURNAL OF TROPICAL SOILS; Vol. 15 No. 1: January 2010; 11-18 | 2018
The Relationship between Phosphate Adsorption and Soil Organic Carbon from Organic Matter Addition (FH Yusran): The application of organic matter (OM) can increase soil phosphorus (P) availability via soil mineralisation. In lateritic soils, however, soluble organic carbon (OC) from OM may also redu...
JOURNAL OF TROPICAL SOILS; Vol. 15 No. 1: January 2010; 1-10 | 2018
A sensitivity analysis of SWAT parameters was conducted on different spatial resolutions. The sensitivity analysis aimed to determine the input parameters that have the most impact on the of output of the model. Resolution of different inputs in the SWAT analysis can produce different input paramete...
JOURNAL OF TROPICAL SOILS; Vol. 23 No. 1: January 2018; 47-53 | 2018
The field and laboratory experimental studies were conducted to determine the phosphorus (P) adsorption behavior employing Langmuir Method and yield of sugarcane as affected by compost and inorganic fertilizer applications, and to determine the correlations between the Langmuir parameters and the av...
JOURNAL OF TROPICAL SOILS; Vol. 23 No. 1: January 2018; 35-45 | 2018