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Frangky J. Paat
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Fakultas Pertanian Universitas Sam Ratulangi , Jl Kampus Bahu, Kec. Malalayang, Manado Sulawesi Utara 95115
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Sulawesi utara
INDONESIA
Jurnal Agroekoteknologi Terapan
Published by Universitas Sam Ratulangi
ISSN : -     EISSN : 27970647     DOI : https://doi.org/10.35791/jat.v2i1.34060
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Jurnal Agroekoteknologi Terapan adalah bagian dari Program Studi Agroteknologi Fakultas Pertanian Universitas Sam Ratulangi Manado 95115. Bertujuan untuk mempublikasikan akumulasi dari hasil-hasil penelitian yang berhubungan dengan ilmu dan teknologi pertanian terapan (applied agrotechnology).
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 207 Documents
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Effects of Moringa (Moringa oleifera L.) Leaf Liquid Organic Fertilizer and NPK Dose on Cauliflower Growth and Curd Yield in Tomohon, Indonesia. Tulung, Stella Maria Theresia; Supit, Paula Clara Heinny; Raintung, Jeane S.M.; Sompotan, Saartje; Porong, Jelie Viekson
Jurnal Agroekoteknologi Terapan (JAT) Vol. 7 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v7i1.66767

Abstract

Cauliflower (Brassica oleracea var. botrytis) production in tropical highlands often depends on high mineral fertilizer inputs, yet integrated nutrient management using locally available organic biostimulants may improve growth and yield while supporting soil quality. This study evaluated the effects of moringa (Moringa oleifera) leaf liquid organic fertilizer (POC) concentration and NPK compound fertilizer dose on cauliflower grown in Kakaskasen, Tomohon City, North Sulawesi, Indonesia (May–October 2025). A 3 × 3 factorial experiment was arranged in a randomized block design with three replications (27 experimental units). POC concentrations were 0, 100, and 200 mL L⁻¹, and NPK doses were 0, 100, and 200 kg ha⁻¹; chicken manure (10 t ha⁻¹ equivalent) was applied as a basal input. Plant height, leaf number, and curd weight were assessed at harvest (~70 days after transplanting) and analyzed by ANOVA followed by LSD (5%). No interaction between POC concentration and NPK dose was detected for the reported variables. Increasing POC significantly improved plant height and leaf number, with 200 mL L⁻¹ producing the tallest plants (40.00 cm) and the highest leaf number (16.11 leaves plant⁻¹). Curd weight increased markedly with POC from 112.47 g (0 mL L⁻¹) to 192.93 g (200 mL L⁻¹). NPK significantly increased plant height and curd weight, with the highest curd weight at 200 kg ha⁻¹ (174.77 g), while the NPK effect on leaf number was not significant. Overall, 200 mL L⁻¹ moringa-leaf POC combined with adequate NPK supply is recommended for further field-scale validation under Tomohon conditions. Keywords: Brassica oleracea; integrated nutrient management; liquid organic fertilizer; Moringa oleifera; NPK fertilizer
Diversity And Functional Composition of Ground Dwelling Arthropods in Vegetable Fields of Modoinding District. Turang, Deflly A. S.; Tairas, Robert William; Paruntu, Meisye H. B.; Kairupan, Grace Amanda
Jurnal Agroekoteknologi Terapan (JAT) Vol. 7 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v7i1.66768

Abstract

Ground dwelling arthropods contribute to decomposition, nutrient cycling, and biological control, and their community structure can reflect management intensity in agroecosystems. Intensive vegetable cultivation in Modoinding District, South Minahasa Regency, North Sulawesi, commonly involves routine fertilizer and pesticide use, yet baseline information on soil associated arthropod diversity across major crops remains limited. This study assessed the diversity, functional roles, and population levels of ground dwelling arthropods in vegetable fields using pitfall trapping. Sampling was conducted at ten georeferenced points distributed across key vegetable producing villages, with traps operated for two days and repeated three times. Arthropods were sorted through macroscopic observation and identified using microscopic examination, primarily to order and family levels. Community diversity was quantified using the Shannon Wiener index. Overall, eight orders and seventeen families were recorded, representing decomposers, predators, herbivores, vectors, parasitoids, and omnivores. Decomposer groups, particularly Collembola, were generally dominant in several crop fields, while predator groups such as ants and spiders were also consistently present. Shannon diversity values across host crops ranged from 0.255 to 1.333, indicating low to moderate diversity and suggesting that some fields were characterized by strong dominance of a limited number of taxa. These findings provide baseline data for biomonitoring programs in Modoinding and support the use of ground dwelling arthropod communities as practical indicators to evaluate ecological responses to vegetable production management. Keywords: Collembola, Modoinding, Pitfall trap, Shannon Wiener index, Vegetable fields
Field Performance of Fruit-Waste Eco-Enzyme Baits for Trapping Bactrocera Spp. In Chili (Capsicum Frutescens L.) Fields of Tomohon City, Indonesia Wanta, Noni N.; Paruntu, Meisye H. B.; Krisen, Jeane
Jurnal Agroekoteknologi Terapan (JAT) Vol. 7 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v7i1.66769

Abstract

Eco-enzyme (EE) liquids produced by fermenting fruit waste may provide low-cost, locally available odor sources for fruit-fly monitoring. This study evaluated the effectiveness of EE baits prepared from nutmeg, banana, and pineapple wastes, as well as a mixed formulation, for trapping Bactrocera spp. in chili (Capsicum frutescens L.) fields in Kakaskasen I Village, Tomohon City, Indonesia. The experiment used a randomized complete block design with four EE treatments and five replicates. Traps were installed in fruiting-stage chili plots at approximately 1.5 m above ground level with ~5 m spacing and were observed over four sampling rounds at 6-day intervals. Captured adult fruit flies were counted and identified morphologically, and treatment effects were analyzed using analysis of variance followed by an LSD (BNT) test at the 5% significance level. Two species were recorded, Bactrocera dorsalis and B. cucurbitae. Mean trap catches (adults per trap) were highest for pineapple EE (6.3), followed by mixed EE (3.1), nutmeg EE (1.7), and banana EE (1.3). Pineapple EE differed significantly from the other treatments (LSD5% = 3.7), whereas the remaining treatments did not differ significantly. Captures were reported to be predominantly female, and non-target insects were also collected, indicating limited selectivity. Overall, pineapple fruit-waste EE showed the strongest field performance and warrants further development as a practical bait for Bactrocera spp. monitoring in chili agroecosystems. Keywords: Bactrocera dorsalis, Capsicum frutescens, eco-enzyme, fermented fruit waste, food-baited trapping
Trade Agreements and Agribusiness Export Performance: Ppml Gravity Evidence from Indonesian Palm Oil Hs 1511 (2015–2023) Tuegeh, Octavia Diana Monica; Paat, Franda Benedicta; Tumiwa, Johan R.
Jurnal Agroekoteknologi Terapan (JAT) Vol. 7 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v7i1.66783

Abstract

This study examines Indonesia’s export performance in an agribusiness product at the HS 6-digit level (HS 1511) over 2015-2023 by combining revealed competitiveness indicators and structural gravity estimation. First, we compute the Revealed Comparative Advantage (RCA) index to assess Indonesia’s export specialization relative to world trade. Second, we estimate a Poisson pseudo-maximum likelihood (PPML) gravity model with year fixed effects to identify the roles of destination market size, trade costs, and trade agreement coverage. Bilateral exports are constructed from UN Comtrade, macroeconomic controls are drawn from the World Development Indicators, bilateral distance and dyadic controls are obtained from CEPII, and trade agreement status is coded from DESTA at the dyad–year level using an in-force rule. Results indicate that Indonesia retains a strong revealed comparative advantage (RCA > 1 in all years), although the average RCA declines between early and late sub-periods. Gravity estimates show that destination market size (particularly population) positively predicts exports, while distance reduces expected export values. Importantly, in-force regional trade agreements are associated with significantly higher bilateral exports, approximately 48% larger export values, ceteris paribus, highlighting the relevance of policy-enabled market access alongside traditional gravity fundamentals. These findings emphasize the joint importance of competitiveness, trade-cost reduction, and effective utilization of trade agreements for sustaining and expanding Indonesia’s agribusiness exports. Keywords: comparative advantage, gravity model, Indonesia, PPML, trade agreements
Abundance Of Soil Fauna In Beneng Taro (Xanthosoma undipes K. Koch) AT Various Altitudes Saputra, Agis; Hermita, Nuniek; Sulistyorini, Endang; Utama, Putra
Jurnal Agroekoteknologi Terapan Vol. 7 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v7i1.66639

Abstract

Beneng Taro (Xanthosoma undipes K. Koch) is a local food crop from Gunung Karang, Banten, with high nutritional potential whose productivity is closely related to soil biological conditions. This study evaluated soil fauna abundance and diversity in talas beneng cultivation areas across three elevations: highland (851-858 m asl), midland (590-602 m asl), and lowland (343 m asl). A quantitative exploratory approach was applied using pitfall traps with ten replications per site and composite soil sampling at 0-20 cm depth. Soil chemical properties (pH, C-organic, N-total, and C/N ratio) were analyzed, and diversity was calculated using the Shannon-Wiener index. A total of seven soil fauna orders were recorded, with Hymenoptera dominating all sites. The midland exhibited the highest abundance (67 individuals), while the lowland showed the highest diversity index (H’=1.077 medium category). Variations in abundance and diversity were associated with differences in soil pH, nitrogen availability, and C/N ratio, which influenced decomposition rates and nutrient dynamics. The findings indicate that elevation-related environmental factors significantly shape soil fauna communities and underscore the importance of soil fertility management in supporting sustainable talas beneng cultivation. Keywords: Abundace, Altitude, Beneng taro, Soil Chemical Properties, Soil Fauna.
Weed Vegetation Analysis Based on Sdr and Ivi in Peanut (Arachis hypogaea L.) Fields of Cipocok Jaya District, Serang Kurniasari, Amelia Dwi; Hermita, Nuniek; Rumbiak, Julio Eiffelt Rossaffelt; Putri, Widia Eka
Jurnal Agroekoteknologi Terapan Vol. 7 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v7i1.66649

Abstract

Peanuts (Arachis hypogaea L.) play an important role as an agricultural commodity with high economic value and are a source of protein in the community's consumption patterns. This study aims to identify the dominant weed species based on Summed Dominance Ratio (SDR) and Importance Value Index (IVI) in peanut (Arachis hypogaea L.) cultivation areas. The research was conducted from August to October 2025 on farmer group land in Link Beberan, Banjaragung Village, Cipocok Jaya Subdistrict, Serang City, Banten Province. This study used a quadrat method with random sampling plot placement measuring 1 × 1 m2 at 20 observation points. The results found 15 weed species from 8 family with a total of 614 individuals consisting of grass weeds and broadleaf weeds. The weed found in almost all research plots was Rottboellia cochinchinensis with 241 individuals/m2 and a relative value of 39.22%, while the lowest was found in the species Eriochloa with 1 individual/m2 and a relative value of 0.16%. The highest relative frequency value was found in Rottboellia cochinchinensis and Richardia brasiliensis at 20.83%. The highest Importance Value Index (IVI) obtained on peanut fields was 89.10, found in the weed species Rottboellia cochinchinensis. The most dominant weed was Rottboellia cochinchinensis with an Summed Dominance Ratio (SDR) value of 29.03. Weed diversity was classified as medium (H′ = 1.58). The results of the study indicate that differences in the level of dominance between species reflect the relationship between the biological characteristics of weeds and local environmental conditions. Keywords: Weeds, Frequency value, Summed Dominance Ratio (SDR), Importance Value Index (IVI), Peanut plant.
Optimizing Granulated Palm Sugar (Arenga pinnata (Wurmb) Merr.) And Sodium Chloride Formulation to Improve Physicochemical Quality And Sensory Acceptance Of Pork Dendeng Rotinsulu, Merri D.; Sakul, Syalom; Sorongan, Syalom
Jurnal Agroekoteknologi Terapan Vol. 7 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v7i1.66916

Abstract

This study evaluated the effects of different combinations of granulated palm sugar (gula semut) and sodium chloride (NaCl) on the physicochemical and sensory quality of pork dendeng. A completely randomized design (CRD) with three treatments and five replications (3×5) was applied. Treatments were formulated on a meat-weight basis (w/w): A1 (2.5% gula semut + 7.5% NaCl), A2 (5.0% gula semut + 5.0% NaCl), and A3 (7.5% gula semut + 2.5% NaCl). For each replication, 200 g pork ham was ground (5 mm plate), mixed with the assigned ingredients, rested at 4 °C for 12–24 h, and dried in a cabinet oven at 80 °C for 11 h. Moisture content (AOAC 950.46), pH, water-holding capacity (WHC; press method), and cooking loss were measured. Sensory acceptance (color, aroma, texture, and taste) was evaluated by 25 untrained panelists using a five-point hedonic scale. Data were analyzed using one-way ANOVA followed by BNJ (Tukey’s HSD) at P < 0.05. The formulation significantly affected WHC and cooking loss. Treatment A2 produced the highest WHC (19.51%) and the lowest cooking loss (40.90%), indicating improved water retention and thermal yield compared with A1 and A3 (P < 0.05). pH values (6.61–6.69) and hedonic scores for all sensory attributes did not differ significantly among treatments (P > 0.05). Overall, a balanced gula semut–NaCl formulation (5%:5%) is recommended to enhance pork dendeng processing performance while maintaining acceptable sensory quality. Keywords: cooking loss; gula semut; pork dendeng; sodium chloride; water-holding capacity

Page 21 of 21 | Total Record : 207

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