Artikel (426)
Converting of tropical rain forest into plantation and agriculture land uses has been claimed as a main factor that affects to global warming and climate change. In order to provide a comprehensive information of the issue, a field observation on peat properties in relation to CO2 emission und...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 47-57 | 2016
The low-efficiency problem in fertilizer application can be overcome by controlling fertilizer solubility, i.e. by rendering the fertilizer to be released gradually; such material is also known as slow-release fertilizer (SRF). This research was aimed to formulate SRF by coating technique using acry...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 37-45 | 2016
A glasshouse trial was performed to determine changes in phosphorus (P) nutrition and the yield of sword bean (Canavalia ensiformis (L.) DC.) following the application of different rates and types of P fertilizer in an acid upland soil of East Lampung. Two different types of P fertilizer, namely SP-...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 29-36 | 2016
Intensive agriculture has been well known to cause decline in soil organic matter and nutrient content of the soils. Therefore, efforts should be taken to avoid this from happening. Addition of organic fertilizers like compost has been increasingly become more important in Indonesian agriculture in ...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 11-19 | 2016
Research was conducted in Gowa, South Sulawesi at dry land farmer during two years. The aims of the research was to get the best method in ascertainment of availability class of potassium (K) for maize in dry land. The research used a single location approach, which made some of K nutrient artificia...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 21-27 | 2016
Rice bean is a group of beans that are rich in carbohydrates, proteins and fats. This plant is resistant to pests and diseases, as well as the broad adaptability. This study aims to obtain an efficient fertilization pattern on rice bean cultivation in dry land. The treatments consisted of 9 fe...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 1-9 | 2016
Phosphorus (P) often becomes limiting factor for plants growth. Phosphorus geochemistry in peatland soil is associated with the presence of peat layer and groundwater level fluctuations. The research was conducted to study the role of peat layer and groundwater level fluctuations on P concentration ...
JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 171-179 | 2015
The arbuscular mycorrhizal fungi ( AMF ) with plants able to increase the capacity of plants to absorb nutrients and water from the soil. Recently, research was indicated that AMF hyphae containing glomalin as a glycoprotein that serves to unify the dispersed soil particles. The content of glomalin ...
JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 181-189 | 2015
Coal ash and humic substances can be used as soil ameliorant in the reclamation of formerly mined land. Due to its high pH and nutrients content, coal ash can be used to improve the chemical properties of the soil, such as increasing of pH, and increasing the levels of nutrients availability in the ...
JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 161-169 | 2015
The large distribution of peat soils in Indonesia have important role in carbon stock and greenhouse gas emission which contribute to global warming issue. The objective of this study was to characterize physical and chemical properties of cultivated peat soils in four trial sites of Indonesia Clima...
JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 131-141 | 2015