Artikel (22)
This study aimed to examine Organonitrofos Plus fertilizer (OP) on sweet corn (Zea mays Saccharata L.) and its effect on changes in soil chemical properties of Ultisols. Organonitrofos Plus fertilizer is an enhancement of Organonitrofos fertilizer enriched with microbes at the beginning of the manuf...
JOURNAL OF TROPICAL SOILS; Vol. 21 No. 1: January 2016; 9-17 | 2016
A field experiment was conducted to find out a combination dose of a novel organic fertilizer (Organonitrophos, OP) and inorganic fertilizers (N, P, and K) for the growth and yield of cassava (Manihot esculenta Crantz) during two planting periods of 2012-2013 and 2013- 2014 in ultisol soil (low in n...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 3: September 2015; 167-172 | 2016
Effect of fertilization on the growth and biomass of Acacia mangium and Eucalyptus hybrid (E. grandis x E. pellita) on third rotation is still not well understood to support judicious application in large scale forest plantations. A field experiment aimed at understanding these questions was con...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 3: September 2015; 157-166 | 2016
Harapan forests is the first restoration forest in Indonesia, includes several different ecosystems. Different ecosystems have different characteristic to affect the diversity and abundance of Collembola. In the ecosystem, Collembola have an important role in biocontrol, decomposition, soil nutrient...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 3: September 2015; 173-180 | 2016
There were five emergence plants in swampland such as Polygonum barbatum, Neptunia prostrata, Phragmites karka, Ludwigia adscendens and Phragmites communis, which might be used for compost source, all the plants were easily adapted and grew very well on acid soil. These plants were choosen becau...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 3: September 2015; 149-155 | 2016
The objective of the research was to study the interaction between dose of humic acid and nitrogen fertilizer on the growth and yield of rice. The experiment was conducted in May until September 2014 in Sukamanah village Cipedes sub-district Tasikmalaya city. A field experiment was done using as...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 3: September 2015; 143-148 | 2016
A greenhouse experiment was conducted to examine the cumulative methane (CH4) emission in paddy soils and correlation with soil redox potential (Eh), soil pH and plant growth. The experiment was arranged in two factorial randomized block designs with three replications. The first factor was a kind o...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 3: September 2015; 135-141 | 2016
Rice field is issued as a source of greenhouses gases (GHGs) emissions especially methane (CH4) and nitrous oxide (N2O). Rice cultural approach could mitigate GHGs emissions i.e. through rice planting systems and nematicide application. The field experiment was conducted in rainfed rice field at Pat...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 3: September 2015; 127-134 | 2016
Tin mining produces a by-product sand tailing from soil leaching with characteristic low pH and total organic carbon, and can be reclaimed by providing a suitable ameliorant. When available in situ, ameliorant materials can be economically used as they are required in large amounts. Fortunatel...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 2: May 2015; 101-109 | 2016
The objective of this study was to evaluate the variations of twelve chemical elements (Ni, Fe, Co, Mg, Mn, Al, Si, Zn, Ti, P, Ca and Cr) in laterite soil profiles from Wantulasi area in South East Sulawesi Province of Indonesia. Eighty four (84) samples of three profiles (i.e. each profile consists...
JOURNAL OF TROPICAL SOILS; Vol. 20 No. 2: May 2015; 111-118 | 2016