Artikel (426)
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
Ultisols have poor soil characteristics, yet biochar is one of the technologies that can be applied as a soil enhancer to improve the soil quality. Biochar has succeeded in improving soil quality, through improving soil physical, chemical, and biological properties. This research aimed to improve th...
JOURNAL OF TROPICAL SOILS; Vol. 24 No. 3: September 2019; 101-107 | 2019
To achieve food-self sufficiency in Indonesia, it is necessary to apply sustainable agriculture practices to improve soil quality. Most of paddy fields have been applied with chemical fertilizers intensively for more than 40 years without the addition of organic matter. The purpose of this study...
JOURNAL OF TROPICAL SOILS; Vol. 24 No. 3: September 2019; 109-117 | 2019
Enhancement of productivity of potato plants grown on poor-P soil such as Inceptisols due to application of arbuscular mycorrhizal fungi (AMF) has been acknowledged. However, whether this AMF improved the quality of potato tubers is still need further investigation. This study was conducted to evalu...
JOURNAL OF TROPICAL SOILS; Vol. 24 No. 3: September 2019; 129-133 | 2019
Upland soils in West Kalimantan used for agricultural activities reach about 483,077 hectares. However, this land potential is not yet optimally exploited due to poor soil fertility. To increase its productivity, there is a need to invent technology packages that are not only effective but also effi...
JOURNAL OF TROPICAL SOILS; Vol. 24 No. 3: September 2019; 119-128 | 2019
Earthworms are important soil biota that can be used as an indicator of soil fertility. Soil tillage systems and application of organic mulch will affect the activity of earthworms. This research was aimed to study the effect of tillage systems and the application of in situ mulch, and their int...
JOURNAL OF TROPICAL SOILS; Vol. 24 No. 3: September 2019; 141-148 | 2019