Artikel (426)
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
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
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
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
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
Coffee productions should have environmental value such as providing high soil microbial diversity while producing high yield. To examine that purposes, two experimental plots were constucted at benchmark site of Conservation and Sustainable Management of Below-Ground Biodiversity (CSM-BGBD), in Sum...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 2: May 2012; 181-187 | 2012
Taxa diversity within soil fauna functional groups can affected ecosystem functioning such as ecosystem engineers,which influence decomposition and nutrient cycling. The objective of this study is to describe ecological diversityvariation within soil fauna as ecosystem engineers in soil ecosystem of...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 2: May 2012; 173-180 | 2012
Research on soil temperature in mangrove forest is a part of the mangrove ecosystem microclimate research. Studieson microclimate variables interaction, including soil temperature is important and interesting because it is associatedwith ecosystem and environmental changes, and the biota living in i...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 2: May 2012; 165-172 | 2012
Greenhouse experiment was conducted at Agricultural Faculty of Winaya Mukti University Tanjungsari SumedangRegency, from May to October 2009. The objective of this experiment was to study the effect of bokashi bottom ashon the growth, yield, and Pb content of upland rice. The experiment used a Rando...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 2: May 2012; 157-163 | 2012
The research was aimed to obtain a combination of rice straw (S) and tithonia (Tithonia diversifolia) (T) to increasechemical fertilizers use efficiency (FUE) on paddy soil which was conducted in Sicincin, Padang Pariaman Regencyin 2008. The experiment consisted of 8 treatments (A= recommendation in...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 2: May 2012; 151-156 | 2012