Artikel dari Penerbit "University of Lampung"

Penerbit: University of Lampung

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Ditemukan 665 artikel.

Improving Phosphate Efficiency by Phosphate Solubilizing Bacteria and Organic Matter Estimated by Radio Isotop (32P) Technique in Some Soils

Oleh: Mudjiharjati, Arie, Setiawati, Tri Candra, Pandutama, Martinus Harsanto

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...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 245-252

Relationship between Organic-C and Available-P Due to Tidal Fluctuation in South Kalimantan

Oleh: Yusran, Fadly Hairannoor

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...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 253-257

Characterization of Surface Runoff, Soil Erosion and Nutrient Loss on Forest-Agriculture Landscape

Oleh: Hidayat, Yayat, Murtilaksono, Kukuh, Sinukaban, Naik

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...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 259-266

Methods for Delineating Degraded Land at Citarum Watershed, West Java, Indonesia

Oleh: Tarigan, Suria Darma

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...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 267-274

Physical Feasibility Study of Agroforestry Farm Systems to Support Sustainable Agriculture in Konaweha Sub Watershed of Southeast Sulawesi

Oleh: Marwah, Sitti

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...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 17 No. 3: September 2012; 275-282

Effectiveness of Direct Application of Phosphate Rock in Upland Acid Inceptisols Soils on Available-P and Maize Yield

Oleh: Nurjaya, ., Nursyamsi, Dedi

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, ...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 1-9

Ameliorant Application on Variation of Carbon Stock and Ash Content on Peatland South Kalimantan

Oleh: Nurzakiah, Siti, Agus, Fahmuddin, Syahbuddin, Haris

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 ...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 11-16

Soil Chemical and Biological Characteristics for Diagnostic the Potency of Acid Dry Land for Soybean Extensification

Oleh: Prihastuti, ., Sudaryono, .

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...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 17-24

Growth and Yield of Rice Plant by the Applications of River Sand, Coconut and Banana Coir in Ustic Endoaquert

Oleh: Nurdin, ., Zakaria, Fauzan

The research aimed to study effect the application of river sand (RS), coconut coir (CC), and banana coir (BC) on growth and yield of rice (Oryza sativa L.) in Ustic Endoaquert. The research was carried out in a green house using 3 × 3 × 3 factorial design. The RS factor consists of three tr...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 25-32

Fresh Organic Matter Application to Improve Aggregate Stability of Ultisols under Wet Tropical Region

Oleh: Yulnafatmawita, ., Anggriani, Febrian

Ultisol as a marginal soil has become ‘a hope’ by farmers in Indonesia due to land use change, lately. However, the soil is susceptible to degradation since it has low soil aggregate stability (SAS) as affected by low soil organic matter (SOM) content. A pot trial about application of f...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 18 No. 1: January 2013; 33-44

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