Artikel dari Penerbit "University of Lampung"

Penerbit: University of Lampung

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Ditemukan 665 artikel.

Zeolite and Hucalcia as Coating Material for Improving Quality of NPK Fertilizer in Costal Sandy Soil

Oleh: Sulakhudin, ., Syukur, Abdul, Sunarminto, Bambang Hendro

The growth and yield of plants are mainly a function of the quantity of fertilizer and water. In coastal sandy soil, nutrient losses and dry soils are seriously problems. The objective of the research was to study effect of zeolite and hucalci concentrations as NPK coating materials on NPK qualities...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 99-106

Phosphate Adsorption Capacity and Organic Matter Effect on Dynamics of P Availability in Upland Ultisol and Lowland Inceptisol

Oleh: Marsi, ., Sabaruddin, .

Ultisols and Inceptisols were used to investigate the adsorption-desorption capacity of P and the effect of organic matter on the dynamics of P availability in tropical acid soils. The experiment consisted of two sub-experiments. Sub-experiment I was to study the adsorption-desorption capacity of Ul...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 107-114

Identification of Soil Salinity Due to Seawater Intrusion on Rice Field in the Northern Coast of Indramayu, West Java

Oleh: Erfandi, Deddy, Rachman, Achmad

The rice fields in Indramayu district is 55% of the district area. The average rainfall is 1590 mm per year. Most lands on the North Coast of Java (northern) were potentially affected by sea water intrusion. Extensive observations were 102.321 ha. Field observations were done by survey method. Obser...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 115-121

Carbon Stock of Agroforestry Systems at Adjacent Buffer Zone of Lore Lindu National Park, Central Sulawesi

Oleh: Wardah, ., Toknok, Bau, Zulkhaidah, .

The potential of agrofrestry to sequestrate carbon varies depending on the natural quality of sites and management practices. Agroforestry is a climate change mitigation activities. The aim of study was to estimate the carbon stock of agroforestry system at adjacent buffer zone of Lore Lindu Nationa...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 123-128

Nitrogen and Phosphorous Movement Characteristic in Terrace Paddy Field Using Cascade Irrigation System in West Sumatra, Indonesia

Oleh: Darmawan, ., Yasin, Syafrimen, Masunaga, Tsugiyuki

West Sumatra is one of Indonesian rice bowl. The landscape of this province dominated by mountainous area with beautiful terrace paddy field lied from the middle slope to the lowland. The most common rice cultivation management in this area is application of cascade irrigation system with blanked am...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 129-138

The Growth and Yield of Sweet Corn Fertilized by Dairy Cattle Effluents Without Chemical Fertilizers in Inceptisols

Oleh: Sastro, Yudi, Lestari, Indarti Puji

Several research has proven the role of dairy cattle effluents in improving the growth and yield of some crops. However, its role in supporting the growth and yield of sweet corn, especialy in Inceptisols, has not been reported. The study aims to determine the effect of dairy cattle effluents on gro...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 139-143

The Application of Rice Hull Mulch and Potassium Nitrate on Growth and Yield of Kailan (Brassica oleraceae var. Long Leaf)

Oleh: Ramadiana, Sri

Potassium (K) is absorbed by plants in larger amounts than any other mineral element except N to optimalize plant growth. Mulches may be influenced an available K at vegetative growth phase of plant. The research was conducted in Simpang Kanan Village, Gisting, Tanggamus Lampung Province. The object...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 145-150

Using Selected Structural Indices to Pinpoint the Field Moisture Capacity of Some Coarse-Textured Agricultural Soils in Southeastern Nigeria

Oleh: Igwe, Charles Arizechukwu, Hermansah, ., Obi, Martin Eze

Over- or underestimation of field capacity (FC) of agricultural soils could misguide soil and water management and this might have negative agronomic and environmental impacts. The study sought to identify the moisture tension for reliably estimating in the laboratory the FC of some sandy soils with...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 151-159

Effect of Coffee Pulp Compost and Terrace on Erosion, Run off and Nutrients Loss from Coffee Plantation in Lahat Regency, South Sumatra

Oleh: Bernas, Siti Masreah

On some coffee plantations in Lahat Regency South Sumatra, in some places the farmers did not apply agricultural practices, such as tillage, conservation practices, and fertilizers. Many researches have been done to study about effects of organic fertilizer on soil nutrients content and plant growth...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 161-167

Coastline Change Surround Sekampung River Estuary Estimated by Geographic Information System Technique

Oleh: Fahri, ., Syam, Tamaluddin

Surround a big river estuary coastline has a dynamic characteristic and change along a period of time, because of anatural process and/or it is accelerated by human activities. The surround Sekampung river estuary coastline located in Rawa Sragi area is one of the most dynamic coastlines in southern...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 16 No. 2: May 2011; 169-174

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