Artikel (57)
The descriptive explored study was conducted in districts Bumi Nabung, Sari Bakti, Seputih Banyak and Rumbia, Central Lampung, Indonesia. The parameters observed consisted of chemical and biological aspects of soil, which directly affected plant growth. This activity was carried out as preliminary s...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 17-24 | 2013
Carbon stock on peatlands are large and will be easily emitted if the land is opened or drained, therefore the measurements of carbon stocks and ash content are important to know the amount of emissions and agricultural sustainability in peatlands. This study aimed to determine carbon stock and ...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 11-16 | 2013
The objectives of the research were: (i) to isolate and characterize of phosphate solubilizing bacteria (PSB) and (ii) to identify PSB based on molecular amplification of 16S rRNA gene. Soil samples were collected from rhizosphere in Bogor, West Nusa Tenggara, and East Nusa Tenggara. Sev...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 67-74 | 2013
An understanding on relationship between water content and mineralization of carbon (C) and nitrogen (N) across soils varying in physical and chemical characteristics is required to assess the influence of soil physico-chemical properties on soil organic matter decomposition. However, such informati...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 45-52 | 2013
Source of P fertilizer which is used by farmers in upland acid soils area is generally acidulated phosphate rock (PR), such as tripel super phosphate (TSP), super phosphate 36% P2O5 (SP-36), as well as partial acidulated phosphate rock (PAPR) which contain 10-30% P2O5. Their effectiveness, however, ...
JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 1-9 | 2013
The farming systems in Konaweha watershed are mostly mixed garden that are partly managed intensively as wellas traditionally. The objectives of this research were to identify and classify agroforestry systems that were practicedby farmers, to study the effect of the agroforestry systems on soil pro...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 275-282 | 2013
Accurate information on the extent and spatial location of degraded lands is very important to plan their rehabilitation. So far, various institutions issue different estimation on the extent of degraded land in Indonesia led to big confusion for rehabilitation planning. Ministry of Forestry est...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 267-274 | 2013
The study was aimed to quantify volume of surface runoff, soil erosion and nutrient loss from the forest-agriculture landscape (forest margins) in Lore Lindu National Park Central Sulawesi. Surface runoff volume and soil erosion were measured daily on erosion plots. It was installed on sever...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 259-266 | 2013
Tidal fluctuation creates different soil chemical properties which is totally deviate from normal circumstances. Organic matter decomposition occurs with limited O2 supply, hence disturbing Carbon cycle which has a central role in the process and nutrient mineralisation. The research aimed w...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 253-257 | 2013
Phosphorous (P) contents in many soils are varies highly along with their ability to provide available P to plant growth. Soils may contain very high in total P, but low in available P due to high P adsorbed by soil matrix and all their adsorbing agents. This research which using natural materials w...
JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 245-252 | 2013