Artikel dari Penerbit "University of Lampung"

Penerbit: University of Lampung

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Ditemukan 665 artikel.

Changes in Soil Available Phosphorus, Leaf Phosphorus Content and Yield of Sword Bean (Canavalia ensiformis (L.) DC.) by Application of SP-36 and Phosphate Rock on Acid Upland Soil of East Lampung

Oleh: Rivaie, Achmad Arivin

A glasshouse trial was performed to determine changes in phosphorus (P) nutrition and the yield of sword bean (Canavalia ensiformis (L.) DC.) following the application of different rates and types of P fertilizer in an acid upland soil of East Lampung. Two different types of P fertilizer, namely SP-...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 29-36

Slow- Release Fertilizer Formulation Using Acrylic and Chitosan Coating

Oleh: Handayani, Lili, Djajakirana, Gunawan, Darmawan, .

The low-efficiency problem in fertilizer application can be overcome by controlling fertilizer solubility, i.e. by rendering the fertilizer to be released gradually; such material is also known as slow-release fertilizer (SRF). This research was aimed to formulate SRF by coating technique using acry...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 37-45

Characteristics of Tropical Drained Peatlands and CO2 Emission under Several Land Use Types

Oleh: Wigena, I Gusti Putu, Husnain, ., Susanti, Erni

Converting of tropical rain forest into plantation and agriculture land uses has been claimed as a main factor that affects to global warming and climate change. In order to provide a comprehensive information of the issue, a field observation on  peat properties in relation to CO2 emission und...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 47-57

Effect Various Combination of Organic Waste on Compost Quality

Oleh: Hapsoh, ., Gusmawartati, ., Yusuf, Muhammad

Municipal solid waste and agricultural waste have different ratio C/N and nutrients contents. They can be used as compost row materials. The purpose of the research was to get an optimum combination of both wastes to improve compost quality, to meet the Indonesian National Standard 19-7030-2004. Com...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 1: January 2015; 59-65

The Effectiveness of Ameliorant to Increase Carbon Stock of Oilpalm and Rubber Plantation on Peatland

Oleh: Dariah, Ai

Application of peatland amelioration can improve soil quality, reduce GHG emissions, and increase carbon sequestration. The research aimed to study the effect of peatland amelioration on oil palm and rubber carbon stock improvement. Research was conducted from August 2013 until June 2014.  The ...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 2: May 2015; 67-75

Characteristics of Heavy Metals Adsorption Cu, Pb and Cd Using Synthetics Zeolite Zsm-5

Oleh: Priyadi, ., Iskandar, ., Suwardi, .

It is generally known that zeolite has potential for heavy metal adsorption. The  objectives of this study were to synthesize and characterize zeolite ZSM-5 and to figure out the adsorption capacity of zeolite ZSM-5 for heavy metals of Cu2+, Pb2+ and Cd2+. Characterization of zeolite ZSM-5 incl...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 2: May 2015; 77-83

Effectiveness of Bio-organic Fertilizer Formulas to Increase Productivity of Upland Rice and Dehydrogenase Activity in Lampung Acid Upland

Oleh: Surono, ., Santosa, Edi, Subowo, .

Development of acid upland in Indonesia still has constraints. To solve the constraint, environmental friendly technology by using organic matter and beneficial microbes is necessary. This study aimed to determine the effectiveness of bio-organic fertilizer formulas for increasing productivity of up...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 2: May 2015; 85-93

Response of Maize Grown on Overburden Soil in a Coal Mining Area without Top Soil to Various Compost Sources

Oleh: Purnomo, Erry

Soil in Kalimantan Island is considered infertile. To obtain a reasonable crop yield a high input fertilizer package should be applied. The situation will be worsening when an open pit system of coal mining adopted. Failure in re-arranging the soil layers can result in decreasing soil fertility comp...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 2: May 2015; 95-99

Effect of Mineral and Humic Substances on Tailing Soil Properties and Nutrient Uptake by Pennisetum purpureum Schumach

Oleh: Wira Etika, Adhe Phoppy, Hasan, Rahmat

Tin mining produces a by-product sand tailing from soil leaching with characteristic low pH and total organic carbon, and can be reclaimed by providing a suitable ameliorant.  When available in situ, ameliorant materials can be economically used as they are required in large amounts. Fortunatel...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 2: May 2015; 101-109

Variation of Chemical Elements and their Associations in Laterite Soil Profile

Oleh: Tufaila, M, Safiuddin, La Ode, Eso, Rosliana

The objective of this study was to evaluate the variations of twelve chemical elements (Ni, Fe, Co, Mg, Mn, Al, Si, Zn, Ti, P, Ca and Cr) in laterite soil profiles from Wantulasi area in South East Sulawesi Province of Indonesia. Eighty four (84) samples of three profiles (i.e. each profile consists...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 20 No. 2: May 2015; 111-118

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