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INDONESIA
AGRITROPICA : Journal of Agricultural Sciences
Published by Universitas Bengkulu
ISSN : 2621217X     EISSN : 2621699X     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
AGRITROPICA is an international, double-blind peer-reviewed, open-access journal, published by Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian Universitas Bengkulu (Publishing House of Faculty of Agriculture, University of Bengkulu).
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 2, No 2 (2019)" : 5 Documents clear
The Best Forecasting Model For Cassava Price Rahmi Yuristia; Dodi Apriyanto; Ketut Sukiyono
AGRITROPICA : Journal of Agricultural Sciences Vol 2, No 2 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.2.2.86-92

Abstract

This study aims to analyze and select the most accurate forecasting for predicting cassava prices in Indonesia. The data used is monthly data during the period of 2009 to 2017. This predicting uses the forecasting model, such as Moving Average, Exponential Smoothing, and Decomposition. Selecting the models found by comparing the smallest values of MAPE, MAD, and MSD. Therefore, it concluded that the Moving Average model is the most appropriate to Forecasting the price of cassava. Keywords : Selection, Forecasting model, cassava, prices
STRUCTURE OF REVENUE AND EXPENDITURE OF FISHERMEN HOUSEHOLD IN SOUTH KAUR SUBDISTRICT KAUR DISTRICT Bambang Sumantri; Melli Suryanty; Reki Susanti
AGRITROPICA : Journal of Agricultural Sciences Vol 2, No 2 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.04 KB) | DOI: 10.31186/j.agritropica.2.2.77-85

Abstract

This study aims to determine the structure of fishermen household income and expenditure. This research was conducted in March-April 2018 in Sekunyit Village. Research location is determined by purposive with Sekunyit consideration that in the village is one of the fishing villages in the Kaur district. Data processed using analysis of receipts and expenditures of households. The results showed the average amount of fisherman household income in Sekunyit Village was Rp. 8,606,594,59 / month. Revenue from the capture fisheries sector contributed the most (82.08%) to the fishermen household income. Meanwhile, the average expenditure of a fisherman's household in Sekunyit Village is Rp. 3,980,499 / month , where 69.24% was used to finance the capture fisheries business sector.
Response of 25 Hybrid Maize Against Salinity Stress and Their Performance in Coastal Area Meko Gustian; Rustikawati Rustikawati; Widodo Widodo; Catur Herison
AGRITROPICA : Journal of Agricultural Sciences Vol 2, No 2 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (958.619 KB) | DOI: 10.31186/j.agritropica.2.2.56-70

Abstract

Plant stress due to NaCl compound will have an impact on the reduction of plant growth and yield.  Tolerant varieties are required  to increase plant production in coastal areas since these areas are closely related to salinity.  This study aimed to (1) determine the appropriate NaCl concentration for saline tolerance in maize stress selection, (2) determine the response of maize plant to salinity stress in nutrient culture, and (3) determine the response of new hybrid maize having adaptibility in coastal area.  Two experiments were run from November 2017 until May 2018. The first experiment was conducted in a greenhouse at the Laboratory of Agronomy, Faculty of Agriculture University of Bengkulu  to determine the tolerance response of 25 new hybrid maize to salinity in nutrient culture.  The second experiment was conducted on the coastal areas in Beringin Raya Village, Muarabangkahulu District, Bengkulu City to determine the response of new hybrid maize having adaptibility in a coastal areas.  The concentration of  NaCl at which level the LC50 was determined was found to be in 150 mM. This concentration was then used to test the tolerance of 25 new hybrid maize to NaCl stress.  The hybrids of CT18, CT19, CT22, CT25, CT31, CT33, CT34, CT40, CT47, and  CT50 showed good responses to the concentration treatment  of 150 mM NaCl based on plant fresh weight and shoot dry weight. The hybrids of CT17,CT19, and CT20 showed good adaptibility on coastal area based on the length of cob, diameter of cob, seed weight per cob, and cob weight per plant.  Among those three hybrids, CT17 and CT20 resulted low fresh weight and low shoot dry weight.  The factors other than NaCl in coastal area maybe affect better response. However, CT19 proved as a hybrid which was consistently in a good response to salinity stress both in nutrient culture and in coastal growing area.
Application of biochar from palm oil plants residues on physical properties of Ultisol Irfan Rusdi; abdul Rauf; Supriadi Supriadi; Benny Hidayat
AGRITROPICA : Journal of Agricultural Sciences Vol 2, No 2 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (444.469 KB) | DOI: 10.31186/j.agritropica.2.2.93-97

Abstract

Ultisol is one type of soil that has several problems for plant growth. The main problems are poor physical properties such as high bulk density, low soil permeability, and low water retention ability. This research aim was to determine the effects of various application of biochar made of oil palm plants residue on bulk density and soil porosity of Ultisol soil. The research design used a non-factorial completely randomized design, consisting of 5 treatments, namely without biochar application (control), oil palm stem biochar, oil palm frond biochar, oil palm empty fruit bunches biochar and combination of biochar ingredients. Each treatment was repeated 4 times hence the number of experimental units became 20 units. The parameters observed included bulk density and soil porosity. The research results showed that biochar application significantly reduced the bulk density and significantly increased the soil porosity of Ultisol soil.
Chemical Properties and Mineralogical Composition of Soils in Original site at Coal Mining Area Ria Rachel Paranoan
AGRITROPICA : Journal of Agricultural Sciences Vol 2, No 2 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (41.277 KB) | DOI: 10.31186/j.agritropica.2.2.71-76

Abstract

Soil minerals and  chemical properties play an essential role  in agricultural, especially to know  the  availability of soil nutrient reserve. The objective of the study was to investigate soil chemical properties and mineralogical  composition. of sand fraction in original area. The study was conducted in two stages. The  First stage was in the field and the second stage was in the laboratory. The field study was at Original area PT. Khotai Makmur Insan Abadi, Kutai Kartanegara, East Kalimantan. Soils were sampled from each horizon of the profile. The second stage was in the Laboratory. The chemical analysis was conducted    in  the Soil Laboratory,  Agriculture Faculty,  Mulawarman University.  The Mineralogical composition of fine sand fractions was  conducted in Pusat penelitian tanah Bogor, with line counting method using Microscope Polaritation (MP). The results of chemical characteristics indicated that  low to very low content of organic matter, soil reactions are acid throughout the horizon,  very low to moderate  base satration, low to moderate soil cation exchange capacity, high of Al saturation.  Sand fraction composition was dominated by resistant minerals (quartz and opaque). On the other hand the easily weatherable minerals are not detected in the original area. One of the reason soil has low  CEC is, because the composition of sand fraction in the soil dominated by quartz.

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