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International Journal of Agriculture System

ijas
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Published by Universitas Hasanuddin

ISSN : 23379782 EISSN : 25806815 DOI : http://dx.doi.org/10.20956/ijas.v5i2.1236

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

International Journal of Agriculture System (Int. J. Agr. Syst.- IJAS) is published by Hasanuddin University (UNHAS) twice a year in June and December. This journal is an academic, citation indexed, and blind peer-reviewed journal. It covers original research articles, short notes and communications, reviews (including book), concepts, commentaries, and letters on a diverse topic related to agricultural systems including forestry, fishery/marine, and animal sciences. The aims of this journal are to provide a venue for academicians, researchers, and practitioners to share/discuss theories, views, research results, on issues related to the science, engineering and technology, and humanities in agriculture development, management, and issues in agricultural systems, particularly in the tropics. However, any other articles related to non-tropical agricultural systems are also welcome.

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)

Articles 6 Documents

Search results for , issue "VOLUME 4 ISSUE 1, JUNE 2016" : 6 Documents clear

Performance of NAA, 2iP, BAP and TDZ on Callus Multiplication, Shoots Initiation and Growth for Efficient Plant Regeneration System in Chrysanthemum (Chrysanthemum morifolium Ramat.) Rinaldi Sjahril; Feranita Haring; Muhammad Riadi; Muhammad Danial Rahim; Raham Sher Khan; Arjunayanti Amir; Trisnawaty A. R.
International Journal of Agriculture System VOLUME 4 ISSUE 1, JUNE 2016
Publisher : Hasanuddin University

Three series of plant growth regulators experiments in Chrysanthemum tissue culture, each arranged in completely randomized design (CRD), were studied to formulate efficient plant regeneration system for developing Chrysanthemum plant cell engineering. In the first experiment, 100 mg callus were cultured in liquid Murashige and Skoog (MS) medium supplemented with different combinations of NAA and BAP concentrations treatments. After 30 days of culture, heaviest callus (1.55 g) was obtained in NAA (1.0 mg L-1) + BAP (0.5 mg L-1). Consequently, shoot regeneration experiment with different kinds and concentrations of auxin, i.e. NAA and 2iP were each combined with different concentrations of cytokine BAP. Callus grown on solid MS medium supplemented with both NAA and BAP at 0.5 mg L-1 showed fastest shoot initiation (30 days), largest number of shoots (5 shoots), longest shoot length (2.88 cm). While combination of 2iP (0.5 mg L-1) and BAP (2.0 mg L-1) also produced same response on shoot initiation but shorter (1.88 cm) and only one shoot. Largest number of shoots (3 shoots) was obtained in treatment BAP (0.5 mg L-1) without 2iP, although shoot initiation was slower (39 days) with shorter length (1 cm). In a separate experiment, effect of single treatment of potential synthetic cytokine for shoot regeneration, Thidiazuron (TDZ), at different concentrations was examined. However, callus grown on TDZ incorporated medium did not produce any shoots and changed from green to brown at end of study (90 days). It was assumed that TDZ inhibited formation of shoots in Chrysanthemum callus culture.

Sulfur Fertilization Influence on Growth and Yield Traits of Three Korean Soybean Varieties Md. Alamgir Kabir; Wook Kim; Hong Wei Wang; Qin Yao; Hyeok Kwon; Thirupathi Karuppanapandian
International Journal of Agriculture System VOLUME 4 ISSUE 1, JUNE 2016
Publisher : Hasanuddin University

Field experiment was carried out at the Research Farm of Korea University, Republic of Korea to study effects of sulfur (S) fertilization on growth traits, yield and yield components of three Korean soybean varieties (Poongsunnamulkong, Saedanbaekkong and Daewonkong). Seeds were sown on black polythene mulched soil bed at the spacing of 15 X 60 cm both at control and sulfur fertilized (gypsum with 16% sulfur content at the rate of 200kg ha-1) plots following a Randomized Complete Block Design of the experiment applying three doses of sulfur together at the time of seed sowing and two doses together at V4 vegetative growth stage (4 nodes on the main stem beginning with the unifoliate node). The results showed that sulfur fertilization significantly increased all studied growth traits of three Soybean varieties except plant height when they all reached physiological maturity stage (120 DAS). It was also evident that sulfur fertilization in the form of gypsum can also increase the number and weight of soybean root nodules and enhance the ability of nitrogen fixation, and so reduce the input of nitrogen fertilizer. Similarly, all the studied yield and yield component related parameters were also significantly influenced by sulfur fertilization except seed number per pod and 100 seed weight. Varieties and sulfur fertilization also interacted significantly in all studied growth traits but the notable sole interaction effect was in plant height. Leaf area of Poongsunnamulkong and Saedanbaekkong variety increased significantly with sulfur fertilization while it was decreased significantly for Daewonkong. Similar trend was observed in their production of number of pods per plant and grain yield per plant indicating leaf area increment by sulfur fertilization played an important role in increasing yield of Poongsunnamulkong and Saedanbaekkong varieties though their performance was reverse in other growth traits. The improvement in growth and yield attributes after sulfur fertilization led to higher biological yield and enhanced seed yield.

The Factors Influencing Fluid Fertilizer Use Intensity among Onion Farmers in Brebes District, Central Java, Indonesia Dwi Purnomo; Jamhari Jamhari; Irham Irham; Dwidjono Hadi Darwanto
International Journal of Agriculture System VOLUME 4 ISSUE 1, JUNE 2016
Publisher : Hasanuddin University

The behavior of the farmers to using the fertilizer could be influenced by some factors. The factors such as social environment, culture, agriculture differentiate the way of using intensity the fertilizer. That behavior can also be different to what fertilizer the farmers use. The study aims to identify and analyze the behavior of farmers in using intensity of the liquid fertilizer products. The research was conducted by using a survey approach through interviews and questions (questionnaire) to 100 respondents of onion farmers in Brebes District Central Java on April until May 2015. Factors affecting the using intensity were analyzed by using multiple linear regression analysis. As the result shows in this study show that the using intensity of the liquid fertilizer is influenced by the income, the experience in planting the onions, how large the land, the productivity of the onion, the cultivating season, the recommendations from other farmers, field trials, and recommendations from the fertilizer store. The implication of the study is the farmers behavior to using the fertilizer is not only influenced of rational factors but also influenced by psychosocial factors. Government efforts to educate farmers about the benefits and risks to using liquid fertilizer need involves both aspects.

Hazard Analysis and Critical Control Points in Cocoa Bean Fermentation Muh. Ruslan Yunus
International Journal of Agriculture System VOLUME 4 ISSUE 1, JUNE 2016
Publisher : Hasanuddin University

The objective of this research is to develop Hazard Analysis and Critical Control Points (HACCP) in cocoa bean fermentation at farmer level, starting from harvesting of cocoa pods until storage of dried fermented cocoa beans. The case study was conducted at Fajar Mas and Mandar Jaya cocoa farmer groups, located in Bukit Sutera Village, District of Larompong, Luwu Regency of South Sulawesi Province, Indonesia. For quality and food safety assurance, production process follows standard operation procedures, though in general the process is done by manual means. Of 11 steps of the process, sortation of cocoa pods, sortation of wet- cocoa beans, and drying of cocoa beans have been identified as CCPs. Potential hazards are found as biological hazards i.e. molds, especially Aspergillus spp., insects, Salmonella, E. coli and pest, and physical hazards i.e. waste and foreign matters. Verification of the HACCP showed compliance with SNI 2323-2008 for moisture, germinated, moldy, and insect damaged bean, insect, foreign matter, waste, and slaty bean contents. Implementation of the HACCP principles by the cocoa farmer groups in producing dried- fermented cocoa beans consistently will improve quality and food safety of the product, which will increase their bargaining power in the cocoa market.

Coastal Community Welfare Improvement through Optimization of Integrated Pond Farming Management in Indonesia Alimudin Laapo; Dafina Howara
International Journal of Agriculture System VOLUME 4 ISSUE 1, JUNE 2016
Publisher : Hasanuddin University

The lack of tenure and limited production factors causing coastal communities always be trapped on the circle of poverty, or far from prosperous. The research objective is to optimize the use of seaweed production factors that integrated with milkfish to improve the welfare of coastal communities in Indonesia. Data analysis employed Multiple Goal Programming methods. The results showed that the average of pond tenure by farmers covering 5,1 Ha with seaweed production 13,191 tons, and profits IDR76,347,700.0 per year (1USD equal to 13,000IDR). The maintenance costs of pond is the kind of production factor that limited availability, while production factors seeds, seedlings, fertilizers, and pesticides, are relatively available to farmers. Optimization results the integrated management of pond show the maximum revenue is achieved IDR1,089.89 million, labor employment 72 people, and target of seaweed production reached 188.65 tons. This means that the welfare of the farmers can be improved through the expansion of pond, and the addition of the production factor, especially capital and fertilizer.

Volume and Surface Area Shrinkages of Some Hybrid Corn Varieties Junaedi Muhidong; Akbal Akbal
International Journal of Agriculture System VOLUME 4 ISSUE 1, JUNE 2016
Publisher : Hasanuddin University

Hybrid corn has been popular to Indonesian corn farmers in recent years. Nonetheless, physical properties of hybrid corn kernels, including their shrinkage behavior, are rarely investigated to support a more efficient post harvest handling. This research was designed to explore the shrinkage behavior of the kernels of five hybrid corn varieties (NK77, DK77, Pioneer, Makmur, and Bisi-2). The study was conducted in the Processing Laboratory of Agricultural Engineering Department, Hasanuddin University, Indonesia, in 2011. Five relatively homogenous kernels from each variety were selected and dried under a temperature of about 47oC with drying air velocity of 1.0 m/s, using a tray dryer, Model EHTD- 300 Eunha Fluid Science. A caliper with an accuracy of 0.05 mm was used to measure the orthogonal dimensions of the kernels. Such dimensions were transformed into volume and surface area ratios. The behaviours of these ratios as a function of moisture contents, called shrinkage behaviors, were fitted to Rahman, Bala and Wood, Corrêa et al. and polynomial quadratic models. The results strongly suggested that there was no single model which was consistently more superior in estimating the shrinkage behaviors of both volume and surface area of the hybrid corn varieties of NK22, DK77, Pioneer, Makmur, and Bisi-2 than the other models. However, compared with the other two models, the Bala and Wood and the polynomial quadratic models consistently provided high R2 values.

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Ahsan Yunus

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ijas@unhas.ac.id

Editorial Address
Graduate School 2nd Floor, Room 202, Hasanuddin University, Jalan Perintis Kemerdekaan KM. 10, Tamalanrea, Makassar, 90245, South Sulawesi, Indonesia.

Location
Kota makassar,

Sulawesi selatan

INDONESIA

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Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Ahsan Yunus

Contact Email ahsanyunus@unhas.ac.id

Phone -

Journal Mail Official ijas@unhas.ac.id

Editorial Address Graduate School 2nd Floor, Room 202, Hasanuddin University, Jalan Perintis Kemerdekaan KM. 10, Tamalanrea, Makassar, 90245, South Sulawesi, Indonesia.

Location Kota makassar, Sulawesi selatan INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Ahsan Yunus

Contact Email
ahsanyunus@unhas.ac.id

Phone
-

Journal Mail Official
ijas@unhas.ac.id

Editorial Address
Graduate School 2nd Floor, Room 202, Hasanuddin University, Jalan Perintis Kemerdekaan KM. 10, Tamalanrea, Makassar, 90245, South Sulawesi, Indonesia.

Location
Kota makassar,

Sulawesi selatan

INDONESIA