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International Journal of Agriculture System
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 7 Documents
 1 
Search results for , issue "VOLUME 12 ISSUE 2, DECEMBER 2024" : 7 Documents clear
Stakeholder Analysis in The Development of Natural Silk Agribusiness in South Sulawesi Province Ashar, Nurul Magfirah; Nurmalina, Rita; Muflikh, Yanti Nuraeni
International Journal of Agriculture System VOLUME 12 ISSUE 2, DECEMBER 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ijas.v12i2.5475

Abstract

Natural silk is an agribusiness activity that consists of a whole series of interconnected and interrelated upstream to downstream sub-systems. The government has intensified the natural silk development policy program in South Sulawesi Province through the regional superior industrial development plan. As a form of superior industrial development as stipulated in the 2018-2038 South Sulawesi Provincial Industrial Development Plan, the involvement of several stakeholders. This research aims to find out all stakeholders involved in policy-making and decision-making in the agricultural and industrial sectors, which are directly related to the development of natural silk agribusiness in South Sulawesi Province. This research was located in South Sulawesi Province, with a regional focus on Soppeng Regency and Wajo Regency, and was carried out for three months, namely February – April 2024. The data obtained was analyzed using the analytical method stakeholder, which was done to interpret interest and influence. Twenty-four stakeholders are involved in developing natural silk agribusiness in South Sulawesi Province. Mapping stakeholders based on importance and influence makes eight stakeholders in quadrants subject (high interest but low influence), five stakeholders in quadrants as key players (high influence and high importance), ten stakeholders in quadrants context setter (high influence but low interest), and one stakeholder in quadrants crowd (low influence and low interest). Stakeholders must coordinate and synergize effectively, establishing good cooperation for the continued development of natural silk agribusiness in South Sulawesi Province in the future. The relationships between stakeholders in the natural silk development policy program in South Sulawesi Province consist of (1) communication, (2) coordination, and (3) cooperation. 
Reproductive Biology of One-Stripe Spiny Eel, Macrognathus aral (Bloch and Schneider, 1801) Das, Manas; Bhanja, Avik; Mandal, Sayan; Maity, Joydev; Mandal, Basudev
International Journal of Agriculture System VOLUME 12 ISSUE 2, DECEMBER 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ijas.v12i2.4866

Abstract

The present study provides important details on the reproductive biology of Macrognathus aral. A comparison of the one-stripe freshwater spiny eel's reproductive biology, including sexual dimorphism, sex ratio, length at first sexual maturity, gonadal maturation, gonadosomatic index, and fecundity, was made. During the breeding season, both sexes show sexual differentiation in body colour, males have dorsally brown, and ventrally whitish-yellow and females have dorsally yellowish-brown and ventrally yellowish body colours, which allows for sexual dimorphism. The male-to-female sex ratio was verified to be 1:0.72 (p < 0.05) by the Chi-square test (χ2). 50% of males and females attained their first sexual maturity at 17.5-19.4 cm and 19.5-22.4 cm respectively. The gonado somatic index value in males and females was highest in the same month of July i.e., 1.95 ± 0.19 and 14.51 ± 0.81respectively. The month of July had the highest number of stage IV gonads, which was a sign of spawning. The absolute fecundity ranged from 3312 ± 34.23 to 12321 ± 299.85, with an average value of 6822.56. The correlation coefficient of fecundity with total length (0.9297), body weight (0.8539), and gonad weight (0.9640) were highly significant (p < 0.05). 
Study of Microclimate of Pepper (Piper nigrum L.) in various Agroforestry Systems Sanjaya, Refki; Pangestika, Padhina
International Journal of Agriculture System VOLUME 12 ISSUE 2, DECEMBER 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ijas.v12i2.4774

Abstract

One of Indonesia's centres of pepper plant yields is Lampung Province. The productivity of the pepper is decreasing. Pepper productivity is declining, so selecting the right crop system, according to the needs of the microclimate of pepper plants, is needed to produce optimal productivity. This research aims to study the microclimate variations of several agroforestry systems, analyze the relationship of microclimate productivity, determine the ideal type, and evaluate the level of pepper productivity in various systems. This research was conducted in Aji Kagungan Village, Abung Kunang District, North Lampung Regency, at 450-1500 meters above sea level in January-April 2019. The research method used was survey purposive sampling, which considered the uniformity of the age of pepper plants and differences in the types of vegetation that make up the system. The data observed were microclimate, land condition, and productivity of pepper plants. Data was collected on five types of systems divided into four zones. Each zone has four observation points, observations were made 8 times with an interval of 10 days. The results showed that the determinants of microclimate diversity of pepper agroforestry systems were canopy area, density, frequency, and vegetation. In contrast, the magnitude of sunlight transmission, temperature, and humidity in pepper agroforestry systems was influenced by vegetation characteristics. The form of relationship formed by the transmission of sunlight and air temperature is positive linear, while the humidity of the air forms a negative linear relationship to the productivity of pepper plants in the agroforestry system tested while of the five types of agroforestry systems tested. Type 5 is the ideal pepper agroforestry system. Where the microclimatic conditions formed by Type 5 can produce the highest pepper productivity among other system types
Description of a new mite pest (Acari: Eriophyoidea) infesting Azadirachta indica from India. Sarkar, Sanjay
International Journal of Agriculture System VOLUME 12 ISSUE 2, DECEMBER 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ijas.v12i2.4915

Abstract

Among the Acari, eriophyoid mite is considered as an important pest as they produce various damage symptoms while feeding on plants. During the general surveys for eriophyoid mites from present study area a new species, Caleptrimerus neemivorus sp. nov. of the family Eriophyidae was found along the margin gall of the leaves of Azadirachta indica A. Juss. (Meliaceae). This new phytophagous mite species was described and illustrated from the specimens collected at English bazar, Malda (25° 0' 39.0276'' N and 88° 8' 27.9528'' E.), West Bengal, India. Relationships of new species with other eriophyoid species are also provided. After proper diagnosis of the species it is found that this is the fourth eriohyoid mite species described from Azadirachta indica in India. This new species is a gall forming plant mite and causes damage to this economically important medicinal plant. For proper control of the mite pest, the taxonomic study of this mite and their relation to the host plant is very much essential.
In Vitro Evaluation of The Antifungal Activity of Breadfruit (Artocarpus altilis) Leaves Extract Againts Puccinia arachidis, Causative Agent of Groundnut Rust Jumar, Jumar; Perdana, Arga Kusuma; Saputra, Riza Adrianoor; Sari, Noorkomala
International Journal of Agriculture System VOLUME 12 ISSUE 2, DECEMBER 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Breadfruit (Artocarpus altilis) leaves contain several antimicrobial properties such as saponins, hydrocyanic acid, polyphenols, acetylcholine, potassium, tannin, phenol, riboflavin, and flavonoids.  Phenol is a compound found in plants that causes pesticide effects. Previous studies have demonstrated that breadfruit leaf extract contains phenol compounds with antimicrobial activity and can be used as a fungicide. The purpose of this study was to determine the effect of breadfruit leaf extract on the growth inhibitory power and percentage inhibition of Puccinia arachidis spore germination as well as the best concentration of breadfruit leaf extract in inhibited the growth of Puccinia arachidis, an agent causing groundnut rust disease in peanut plants in food poisoning method. This study used a single factor CRD consisting of 5 treatment levels, namely k0(-) = negative control, k0(+) = positive control, k1 = 10 % extract concentration, k2 = extract concentration of 20 %, and k3 = extract concentration of 30 %. The results of this study indicate that the breadfruit leaf extract significantly affected Puccinia arachidis growth with the presence of percentage inhibition of Puccinia arachidis spore germination. The highest concentration of breadfruit leaf extract as a rust disease biofungicide (Puccinia arachidis) in peanut plants in vitro at a concentration of 30 %.
Production of Biomass and Bioactive Compound as a-Glucosidase Inhibitor Activities Simplisia Cat Whiskers (Orthosiphon aristatus) at Fertilization and Differences Harvest Rotation Time Malasari, Silvina; Miska, Moh. Ega Elman; Fauziyah, Qonitah; Selita, Neni
International Journal of Agriculture System VOLUME 12 ISSUE 2, DECEMBER 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ijas.v12i2.4813

Abstract

Cat whiskers are traditional medicinal plants with bioactive compounds like flavonoids like sinensetin. The development of cat whiskers as a medicinal plant is still constrained by the quality of the simplisia. Fertilization and harvesting are essential aspects of the cultivation of medicinal plants. The research aims to determine the proper fertilization and harvest rotation time differences to produce biomass production and bioactive compound simplisia in cat whisker leaves. The method used was a Randomized Complete Block Design composed of two factors. The first factor was harvest rotation, consisting of four and six levels. The second factor was fertilization, composed of three levels, namely 100 g Indigenous Arbuscular Mycorrhizal Fungi (AMF) inoculum, 2.1 g Urea (N fertilizer) & 2.7 g SP-36 (P fertilizer), and a combination of 100 g Indigenous AMF inoculum + 2.1 g Urea (N fertilizer) & 2.7 g SP-36 (P fertilizer). The results showed that the highest simplisia biomass production was obtained by giving a combination fertilizer (Indigenous AMF, N & P). In contrast, the highest simplisia bioactive compound production was obtained with indigenous Arbuscular Mycorrhizal Fungi (AMF) fertilizer or a combination fertilizer (Indigenous FMA, N & P). Production of biomass and bioactive compounds of cat whisker plants simplisia can be done by harvesting earlier every four weeks or extending the harvesting time to every six weeks.
Turning Waste into Nutrition: Harnessing Tannery Waste for Black Soldier Fly Larvae Cultivation as Sustainable Catfish Feed Alternatives Yuliatmo, Ragil; Maharani, Sakti; Nurbalia, Elis; Wibowo, Raden Lukas Martindro Satrio Ari
International Journal of Agriculture System VOLUME 12 ISSUE 2, DECEMBER 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ijas.v12i2.5195

Abstract

This study aimed to help reduce the lime fleshing solid waste problem by implementing utilization as feed for Black Soldier Fly (BSF) larvae. The BSF larvae were analyzed as a sample to determine whether it is safe to be eaten by other living species, especially catfish. The raw material used is lime fleshing cowhide waste from a leather tannery. The process included fermentation of lime fleshing waste with a formulation of waste: bran: water (8:1:2) for three days, hatching BSF larvae eggs for six days, and feeding fermented waste to BSF larvae (1000:1) for nine days, then baby BSF larvae dried, and BSF larvae were applied to catfish in a ratio (BSF larvae weight = 9: 5) for 12 days. Then, they analyzed the protein, calcium, and sulfur contents on the sample BSF larvae and catfish. We used the fermentation of lime fleshing waste with bran and water variables, which are well water, catfish pond water, and rice washing water, for three days. Then, hatching BSF larvae eggs for six days, BSF larvae cultivation for nine days, and application of the BSF larvae on catfish for 12 days. Data were analyzed by one-way ANOVA, then continued using the Duncan Multiple Range Test (DMRT). The result of fermented lime fleshing waste was used on the BSF larvae, and the cultivation contents were analyzed for protein, calcium, and sulfur. The analysis result of the three variables has an average value of protein at around 6.06%, calcium at 0.041%, and sulfur at around 0.016%. The study concludes that BSF larvae, when combined with commercial feed and suitable formulation, could be an effective and efficient alternative feed for catfish while addressing the lime fleshing waste problem.

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