Artikel (421)
Use of chemical fertilizers and pesticides on intensive land of both lowland and upland food crops have been shown to increase agricultural productivity significantly. Research aimed to study soil chemical characteristics and soil pesticide residues at some crops of organic and conventional farms. T...
JOURNAL OF TROPICAL SOILS; Vol. 21 No. 1: January 2016; 19-25 | 2017
The importance to return organic matter to the soil has been widely recognized, especially to agricultural lands that are low in organic matter and nutrients contents that will decrease the productivity of food crops. This study aimed to study the effect of biochar (rice husk and corn cob bi...
JOURNAL OF TROPICAL SOILS; Vol. 21 No. 1: January 2016; 1-7 | 2017
This research was conducted to study the population and diversity of soil and leaf litter mesofauna in arable soils under different types of vegetation and slope at the Agriculture Experimental Field (AEF) of University of Lampung. This study was designed to use the survey method. The soil and leaf ...
JOURNAL OF TROPICAL SOILS; Vol. 22 No. 1: January 2017; 55-66 | 2017
The aim of the research was to find out potential strainsof cellulolytic bacteria isolated from two tropical peat soils and to studythe potency of the isolated bacteria to decompose oil palm empty fruit bunch (EFB). The research was carried out in two stages: (1) isolation of cellulolytic bacteria f...
JOURNAL OF TROPICAL SOILS; Vol. 22 No. 1: January 2017; 47-53 | 2017
Efforts to increase the production of sweet corn can be done with the application of fertilizers, either inorganic, organic orits combination. In addition, the application of soil amendments such as biochar is also expected to improve soil fertility that will indirectly increase the production of sw...
JOURNAL OF TROPICAL SOILS; Vol. 22 No. 1: January 2017; 37-45 | 2017
Study of Root Exudate Organic Acids and Microbial Population in the Rhizosphere of Oil Palm Seedling
Mutual interaction between plants and microbes occured in the rhizosphere is expected to increase productivity of crops or soil fertility for agriculture. Plants excrete root exudates to attract microbes, and then microbes obtain habitat and food supply from plants and can fulfill the nutrient requi...
JOURNAL OF TROPICAL SOILS; Vol. 22 No. 1: January 2017; 29-36 | 2017
The practices of tin mining which removing all layers of soil on deposits of minerals caused the seriously environmental problems, i.e degradation of physical and chemical soil, disappearance of vegetation, flora and fauna in ecosystems that changed the microclimate. In the tailings area of tin mini...
JOURNAL OF TROPICAL SOILS; Vol. 22 No. 1: January 2017; 21-28 | 2017
Peat soil amelioration has important role on improvement of soil peat fertility such as on increasing soil pH, reducing organic acid and toxic ions, and also increasing nutrients availability. Soil amelioration with polyvalent cations (Fe Al Cu Zn) namely slag, lateritic soils, and river...
JOURNAL OF TROPICAL SOILS; Vol. 22 No. 1: January 2017; 11-20 | 2017
The conversion of peat soils to agricultural uses has been thought to increase CO2 emission due to several factors, including fertilization. However, evidence on the effect of fertilization on CO2emissionsfrompeat soils is rareand often inconsistence. We measured the effects of different types of fe...
JOURNAL OF TROPICAL SOILS; Vol. 22 No. 1: January 2017; 1-9 | 2017
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