Artikel dari Penerbit "University of Lampung"

Ditemukan 665 artikel.


Phosphorus Extraction from Soil Constituents Using Bray P-1, Mehlich-1 and Olsen Solutions

Oleh: Lumbanraja, Jamalam, Mulyani, Sri, Utomo, Muhajir

The extraction methods using Bray P-1, Mehlich-1, and Olsen solutions are the most frequently used in equilibrium condition to estimate the available P in the soil constituents. However, each method can gives some different values that may not describe the availability of soil P. Therefore, it is ne...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 22 No. 2: May 2017; 67-76

The Effect of Paraquat, Difenoconazole, and Butylphenyl Methylcarbamate (BPMC) on CO2 Emissions and Phenolic Acids in Peat Soil

Oleh: Fitriyani, Indri Hapsari, Anwar, Syaiful, Hartono, Arief

Pesticides are widely used in agriculture, including on peat soil. The objective of this study was to analyze the effect of the application of paraquat, difenoconazole, and butylphenyl methylcarbamate (BPMC) on CO2 emissions and concentrations of phenolic acids in a peat soil. Peat soil sample was t...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 22 No. 2: May 2017; 77-85

Utilization of Coal Bottom Ash and Cattle Manure as Soil Ameliorant on Acid Soil and Its Effect on Heavy Metal Content in Mustard (Brassica juncea)

Oleh: Agustini, Rika Yayu, Iskandar, Iskandar, Sudarsono, Sudarsono

Coal bottom ash and cattle manure can be used as soil ameliorant. The application of coal bottom ash and cattle manure can improve the soil chemical properties, such as pH and the amounts of available nutrients in soil. The objective of the study was to understand the effect of coal bottom ash and c...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 22 No. 2: May 2017; 87-95

Integrated Nutrient Management of an Acid Paddy Soil in Karang Tanjung Village, Padang Ratu, Central Lampung

Oleh: Kasno, Antonius, Irawan, Irawan, Husnain, Husnain

Balanced fertilization is the key factor to improve the efficiency and effectiveness of fertilization.The dosage of inorganic fertilizers applied can be determined based on the nutrient status of P, K and rice productivity. The research aims to improve balance fertilization that combines inorganic f...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 22 No. 2: May 2017; 97-106

The Effect of Soil Moisture Content and Animal Manure Application on the Growth of Mendong (Fimbristylis globulosa (Retz.) Kunt)

Oleh: Sunarya, Yaya, Sumarsih, Enok

The objective of the research was to study the interaction between soil moisture content and animal manure application on the growth of Mendong (Fimbristylis globulosa (Retz.) Kunt). The experiment was conducted in May until September 2016 in Kampung Lembur Sawah, Kamulyan Village, Manonjaya Subdist...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 22 No. 2: May 2017; 107-112

Improvement of Physical and Chemical Soil Quality of Oil Palm Plantation through Integrated Farming System of Cattle and Oil Palm to Achieve Sustainable Agriculture

Oleh: Romelah, Siti, Niswati, Ainin, Tugiyono, Tugiyono

The objectives of the research were to compare the quality of physical and chemical characteristics of the soils in the oil palm plantations applied with integrated farming system of cattle and oil palm plantation (IFSCO) and without IFSCO (non-IFSCO), as well as to evaluate the economic benefits of...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 22 No. 2: May 2017; 113-123

Allelopathic Inhibition of Nitrifying Bacteria by Legumes

Oleh: Umiyati, Uum

The study aimed at understanding the competitive ability of legumes Vigna radiata L. and Mucuna pruriens with weeds and their effects on the activity of nitrifying bacteria in soils and the contents of organic-N in legumes and weeds. The experiment was arranged in a randomized block design with thre...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 22 No. 2: May 2017; 125-130

Inaktivasi In Situ Pencemaran Kadmium pada Tanah Pertanian Menggunakan Amelioran dan Pupuk pada Dosis Rasional untuk Budidaya Tanaman

Oleh: Sudadi, Untung, Sabiham, Supiandi, Sutandi, Atang

Arable soils located in the vicinity of urban and industrial area are considered vulnerable to heavy metals pollution.  Chemical inactivation, an in situ remediation method that used inexpensive chemicals to reduce pollutant solubility in polluted soil, was examined on a Cd-spiked arable soil. Th...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 3: September 2008; 171-178

Penentuan Kebutuhan Pupuk Kalium dengan Uji K-Tanah untuk Tanaman jagung di Typic Kandiudox

Oleh: Sutriadi, Mas Teddy, Setyorini, Diah, Nursyamsi, Deddi

Fertilization of K is very important to increase product agriculture besides fertilization of N and P. In this time usage fertilizer not yet proportional and rational, such as those which happened in usage rice field fertilizer of K for the crop of paddy tend to excessively. The other way in the upl...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 3: September 2008; 179-187

Transformasi Nitrogen dalam Tanah Tergenang: Aplikasi Jerami Padi dan Kompos Jerami Padi

Oleh: Indriyati, Lilik Tri, Sabiham, Supiandi, Darusman, Latifah Kosim

The use of organic materials aimed at reducing the dependence on inputs such as chemical fertilizers can contribute to sustainability and improving the low N fertilizer efficiency of rice plants in paddy soils.  Therefore, better understanding of N transformation in flooded soils, particularly th...

Sumber: JOURNAL OF TROPICAL SOILS; Vol. 13 No. 3: September 2008; 189-197