Artikel dari Penerbit "University of Lampung"

Penerbit: University of Lampung

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Ditemukan 665 artikel.

CO2 Flux from Tropical Land Uses on Andisol in West Java, Indonesia

Oleh: Hendri, Jon, Sumawinata, Basuki, Baskoro, Dwi Putro Tejo

This study measured CO2 flux by segregating effect of root respiration and organic matter decomposition by microbes. The study involved a mineral soil containing high organic matter (Andisols), in the tropic devoted to different land uses i.e. natural forest, tea plantation, and horticultural farm C...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 121-130

Physical and Chemical Properties of Cultivated Peat Soils in Four Trial Sites of ICCTF in Kalimantan and Sumatra, Indonesia

Oleh: Hikmatullah, ., Sukarman, .

The large distribution of peat soils in Indonesia have important role in carbon stock and greenhouse gas emission which contribute to global warming issue. The objective of this study was to characterize physical and chemical properties of cultivated peat soils in four trial sites of Indonesia Clima...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 131-141

The Effects of Fire on Organic Functional Groups of Peat in Relation to Water Content

Oleh: Ramadhan, Said, Yusran, Fadly Hairannoor, Haris, Abdul

The aim of this research was to study the decline of organic functional group through the process of burning in peat. In addition, this study was also to examine the relationship between water content in peat and organic functional group after combustion (burning).  Peat drying was conducted in a...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 143-149

Assessment of Indigenous N, P and K Supply for Rice Site Specific Nutrient Management in Buru Regency

Oleh: Susanto, Andriko Noto, Sirappa, Marthen Pasang

Rate of fertilizer that should be applied to rice soil based on Site Specific Nutrient Management (SSNM) depends on indigenous nutrient supply, its recovery efficiency, and the amount of nutrients requirement to achieve the yield target. Research on nutrient omission plot was conducted in farmers ir...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 151-159

Utilizing Coal Ash and Humic Substances as Soil Ameliorant on Reclaimed Post-Mining Land

Oleh: Oklima, Ade Mariyam, Sudarsono, ., Iskandar, .

Coal ash and humic substances can be used as soil ameliorant in the reclamation of formerly mined land. Due to its high pH and nutrients content, coal ash can be used to improve the chemical properties of the soil, such as increasing of pH, and increasing the levels of nutrients availability in the ...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 161-169

Interaction of Peat Soil and Sulphidic Material Substratum: Role of Peat Layer and Groundwater Level Fluctuations on Phosphorus Concentration

Oleh: Fahmi, Arifin, Radjagukguk, Bostang, Purwanto, Benito Heru

Phosphorus (P) often becomes limiting factor for plants growth. Phosphorus geochemistry in peatland soil is associated with the presence of peat layer and groundwater level fluctuations. The research was conducted to study the role of peat layer and groundwater level fluctuations on P concentration ...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 171-179

Potential Selection of Arbuscular Mycorrhizal Fungi (AMF) Indigenous Ultisols through the Production of Glomalin

Oleh: Eddiwal, ., Saidi, Amrizal, Lenin, Ismon

The arbuscular mycorrhizal fungi ( AMF ) with plants able to increase the capacity of plants to absorb nutrients and water from the soil. Recently, research was indicated that AMF hyphae containing glomalin as a glycoprotein that serves to unify the dispersed soil particles. The content of glomalin ...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 19 No. 3: September 2014; 181-189

The Nutrient Uptake Efficiency, Crop Productivity and Quality of Rice Bean in Dry Land

Oleh: Susilowati, Lolita Endang, Yakop, Uyek Malik, Ujianto, Lestari

Rice bean is a group of beans that are rich in carbohydrates, proteins and fats. This plant is resistant to pests and diseases, as well as the broad adaptability.  This study aims to obtain an efficient fertilization pattern on rice bean cultivation in dry land. The treatments consisted of 9 fe...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 1-9

Soil Quality Improvement Using Compost and its Effects on Organic-Corn Production

Oleh: Riwandi, ., Handajaningsih, Merakati, Hasanudin, .

Intensive agriculture has been well known to cause decline in soil organic matter and nutrient content of the soils. Therefore, efforts should be taken to avoid this from happening. Addition of organic fertilizers like compost has been increasingly become more important in Indonesian agriculture in ...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 11-19

Ascertainment of K Nutrient Availability Class for Maize by Several Methods

Oleh: Sirappa, Marthen Pasang, Tandisau, Peter

Research was conducted in Gowa, South Sulawesi at dry land farmer during two years. The aims of the research was to get the best method in ascertainment of availability class of potassium (K) for maize in dry land. The research used a single location approach, which made some of K nutrient artificia...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 21-27

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