Artikel (421)
Rice production is a significant anthropogenic source of methane (CH4) and nitrous oxide (N2O), two important greenhouse gases (GHGs). Several strategies for reducing GHGs emissions from paddy fields are water management and the use of low emission rice cultivars. The purpose of this study was to de...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 2: May 2020; 53-60 | 2020
Potential volcano in several provinces in Indonesia played a significant role in the formation and quality of soil development. Soils that developed from the volcanic ashes often thought to contribute greatly to improve soil fertility, without regard to the nature and composition of the volcanic ash...
JOURNAL OF TROPICAL SOILS; Vol. 24 No. 3: September 2019; 135-140 | 2020
Petroleum industry activities produce waste such as petroleum hydrocarbons which damage to the soil environment due to changes in soil physical, chemical and biological properties. Oil Spill Dispersant (OSD) is a product that can break down waste of oil into small parts so that it can be dispersed n...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 1: January 2020; 1-10 | 2020
Information on the distribution of various forms of iron in soils are valuable in the study of soil genesis. The objective of this study was to to evaluate the pedogenic forms of iron in soils developed over basement complex and basaltic parent materials of the study area. Geologic units considered ...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 1: January 2020; 47-52 | 2020
The study about the effectiveness of inorganic fertilizer and bio-fertilizer application on maize yield and fertilizer use efficiency has been carried out in the greenhouse using Inceptisol from Dukuh Village, Cibungbulang District, Bogor Regency. Inorganic fertilizers used were Urea, SP36 and KCl, ...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 1: January 2020; 11-20 | 2020
Allophane is known as clay mineral with high capacity of phosphate adsorption via ligand-exchange mechanism. This study aims to compare the phosphate adsorption characteristics by allophane from Mt. Merapi and Mt. Lawu in relation to its chemical and mineralogical properties. The results of X-Ra...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 1: January 2020; 39-46 | 2020
Acid sulfate soil contains high acid cations. Palm oil mill effluent (POME) mixed with zeolite can increase pH of acid sulfate soil. Base cations (Ca, K and Mg) on zeolite are exchangeable with H+Â and Al3+ ions in acid sulfate soil. The aim of this study was to investigate the effects of applica...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 1: January 2020; 21-27 | 2020
Pepper (Piper nigrum L.) has a high selling value. The price of pepper in the domestic or international market that is always high can be a great opportunity to increase farmers’ income. Tirtomoyo District is dominated by hilly areas with common soil types of Litosol and Latosol. As one of th...
JOURNAL OF TROPICAL SOILS; Vol. 25 No. 1: January 2020; 29-37 | 2020
A wide and deep soil profile (around 1200 cm) was observed at Ketep Park West Slope of Merbabu volcano Central Java, Indonesia to identify the soil morphology, physical and, chemical and mineralogical properties. Results showed that several soil development processes occurred in each volcanic de...
JOURNAL OF TROPICAL SOILS; Vol. 24 No. 2: May 2019; 53-63 | 2019
Silicate is an important nutrient element for rice plants. Rice is a plant that absorbs Si in large quantities. The low Si content in paddy fields is caused by intensive rice cultivation practices. Ash husk rice and bamboo leaves are materials that have a high silicate content so that the ad...
JOURNAL OF TROPICAL SOILS; Vol. 24 No. 2: May 2019; 65-71 | 2019