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Sumatera utara
INDONESIA
Indonesian Journal of Agricultural Research
Published by Universitas Sumatera Utara
ISSN : 26155842     EISSN : 26155842     DOI : -
Core Subject : Economy, Health, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Environmental Science Social Sciences Veterinary
Indonesian Journal of Agricultural Research (InJAR) is a peer-reviewed quarterly journal published by TALENTA (Universitas Sumatera Utara's Journals Publisher) and managed by Faculty of Agriculture, Universitas Sumatera Utara. It is based on DIKTI accreditation standard and covers all aspects of agricultural researches including Animal Science and Fisheries, Agribusiness, Agrotechnology and Agricultural Technology. All manuscripts are double-blind refereed before acceptance. InJAR is published in March, July, and November.
Arjuna Subject : -
Articles 178 Documents
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Optimizing lettuce (Lactuca sativa L.) growth and yield through enhanced light quality in vertical drip fertigation systems Kumarasena, P. V. D. N. N. T.; Pushpakumari, W. H. Dinesha Udayangani; Chathurika, Jayathunga Arachchige Surani; Rathnathunga, Elpitiya Udari Uvindhya
Indonesian Journal of Agricultural Research Vol. 8 No. 2 (2025): InJAR, Vol. 8, No. 2, July 2025
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v8i2.18751

Abstract

Optimizing light conditions has become crucial for enhancing crop yield, especially in controlled environments like vertical farming. Lettuce (Lactuca sativa L.), highly responsive to light variations, presents an ideal model for studying the influence of light quality on growth. Main objective was to evaluate the effects of light quality on the vegetative growth and yield of two lettuce varieties, ‘Green Coral’ and ‘Red Coral,’ in a home-based vertical drip fertigation system. Completely Randomized Design (CRD) was applied with five replicates and three treatments of T1: Control (no artificial light), T2: two horizontally arranged full spectrum LED light strips, and T3: three horizontally arranged full spectrum LED light strips. Number of leaves (NL), plant height (PH), and fresh weight (FW) were recorded across two growing seasons. Statistical analysis was conducted in one-way ANOVA and Tukey's test revealed that T2 significantly increased NL and PH in both varieties compared to T1 (P<0.05). The variety ‘Green Coral’ showed a significant increase in PH (6.7±0.72 cm) under T2. Wet weight was also significantly higher in T2 for both varieties, with 'Green Coral' yielding 6.2±0.54 g and 'Red Coral' 6.6±0.38 g. These results reported the positive impact of light quality on vegetative growth, suggesting the potential for improved yield in vertical farming.
Differences in fermentation time and various rumen liquids on the nutrient content and tannins of Calliandra leaves (Calliandra calothyrsus) Hasanah, Uswatun; Devandra; Tafsin, Ma’ruf
Indonesian Journal of Agricultural Research Vol. 8 No. 2 (2025): InJAR, Vol. 8, No. 2, July 2025
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v8i2.19603

Abstract

Fermentation is one way to lower tannin levels and improve nutritional quality. The purpose of this study is to determine the effect of fermentation time and various rumen liquids on the nutrient content and tannins of Calliandra leaves. In this study, two factors were used, namely Factor 1 of fermentation time (L1:0 day, L2: 7 days, L3: 14 days) and Factor 2 of various types of rumen liquids (C1: sheep, C2: cattle), which were compiled in a Factorial Complete Random Design. The factors observed were crude protein, crude fiber, crude fat, and tannins. Based on the results, the interaction of Calliandra leaves fermentation using different fermentation time and rumen liquid had a very real influence (P<0.01) on the average value of crude protein (20.03-25.13%), crude fiber (9.27-12.84%), crude fat (0.97-1.80%), and tannins (23.22–36.65 TAE mg/g). Based on the results of this study, C1L3 and C2L3 which have crude protein content of 22.18% and 25.13%, respectively, crude fiber content of 9.84% and 11.44%, and crude fat content of 1.80% and 1.25% are the most ideal treatment combinations. However, with tannin levels of 2.32% and 3.19%, sheep rumen liquid has been proven to be more successful in reducing tannin levels than bovine rumen liquid.
Analysis of blanching and drying temperature on the physical characteristics of breadfruit chips during drying Ahmad, Ilham; Jassin, Ernawati; Muhtar, Imran
Indonesian Journal of Agricultural Research Vol. 8 No. 3 (2025): InJAR, Vol. 8, No. 3, In Press
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v8i3.12599

Abstract

This study evaluated how blanching regime and drying temperature influence moisture removal dynamics and dimensional changes in breadfruit chips. We dried breadfruit chips at 55 or 65 °C following one of three pretreatments: blanching at 40 °C for 15 min, blanching at 80 °C for 30 min, or no blanching. Raising drying temperature lowered the equilibrium moisture content (EMC) and shortened the time to reach it: at 55 °C, EMC stabilized at 6.94–17.03% after 840–1290 min; at 65 °C, EMC was 4.33–14.57% after 810–1050 min. Across both temperatures, mild blanching (40 °C, 15 min) consistently produced the highest drying rate, whereas no blanching or severe blanching (80 °C, 30 min) yielded the lowest rates. Shrinkage showed a similar tendency: at 55 °C, it was greatest after mild blanching and lowest after severe blanching; at 65 °C, it remained greatest with mild blanching but was lowest without blanching. These patterns suggest that mild blanching may open cellular pathways, enhancing water diffusion and promoting structural collapse, whereas harsher conditions or no blanching restrict mass transfer and limit shrinkage. Overall, elevating the temperature accelerated drying and reduced EMC, and blanching conditions strongly modulated both drying rate and product dimensions. From a processing standpoint, pretreatments should be selected to balance throughput with textural quality; for applications prioritizing rapid dehydration, mild blanching at 40 °C for 15 min is advantageous, whereas minimizing shrinkage may require either higher-temperature drying without blanching or carefully optimized, shorter blanching steps.
Formal market access barriers in small-scale broiler farming at Kromhoek Village, Blourberg Local Municipality, Limpopo Province: Formal market participation Sekepe, Mahlatse Alfred; Belete, Abenet; Mokhaukhau, Jenny; Nengovhela, Rudzani
Indonesian Journal of Agricultural Research Vol. 8 No. 3 (2025): InJAR, Vol. 8, No. 3, In Press
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v8i3.15491

Abstract

Poultry production is integral to the livelihoods of small-scale broiler chicken farmers in South Africa, serving as a potential source of income and food security. However, these farmers face challenges in accessing lucrative markets, limiting their economic potential. This study explored the factors influencing access to formal markets and analyzed the barriers hindering small-scale broiler farmers. A sample of 50 small-scale broiler farmers were interviewed, and a multivariate logistic model was used to analyze the data. The findings showed that trading on local and informal markets, the use of traditional production methods, limited marketing skills, the lack of extension services, and low revenue are barriers to formal market access for small-scale broiler farmers. In addition, the level of education, employment status, and distance to the market were the factors that hindered the market access of small-scale broiler farmers in the study area. Thus, easing market access barriers is key to tapping the economic potential of small-scale broiler chicken production and supporting sustainable growth in rural communities.
Agronomic characteristics and radiosensitivity level of the Rubaru shallot irradiated by gamma rays Persada, Olfa; Fairuzia, Fazat; Yuliani, Farida; Arini, Nindya
Indonesian Journal of Agricultural Research Vol. 8 No. 3 (2025): InJAR, Vol. 8, No. 3, In Press
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v8i3.16838

Abstract

The Rubaru shallots are resistant to various abiotic and biotic stresses, such as high salinity and Fusarium wilt disease. However, this shallot was unable to flower even after flowering was induced by cold temperatures and increasing day length, as well as polyploidy methods. Therefore, efforts are needed to increase the genetic diversity of the Rubaru variety of shallots through the induction of physical mutations with gamma ray irradiation. This research aims to determine the agronomic characteristics and radiosensitivity level of the Rubaru shallot (Allium cepa L.) resulting from gamma-ray irradiation. The research used a Randomized Complete Block Design (RCBD) with one factor, namely the dose of gamma ray irradiation (G), which consists of 5 levels as follows: G0 (control), G1 (2 Gy), G2 (4 Gy), G3 (6 Gy), G4 (8 Gy). The gamma-ray irradiation treatment had a very significant effect on agronomic characteristics, namely plant length and number of leaves, number of bulbs per cluster, bulb diameter, bulb fresh weight per cluster, bulb dry weight per cluster, and weight of the largest bulb per cluster. Gamma irradiation treatment with a dose of 2 Gy produced the highest number of bulbs and bulb diameter, with the largest weight of < 3g. Meanwhile, a dose of 8 Gy had a real effect on all parameters in inhibiting the growth of the Rubaru shallot. The calculated lethal dose (LD50) value is 6.18 Gy.
Phytochemicals and antioxidant activities of Sarawak Bario rice varieties Ronie, Macdalyna Esther; Mamat, Hasmadi; Abdul Aziz, Ahmad Hazim; Zainol, Mohamad Khairi; Ridhwan, Norazlina Mohammad; Kobun, Rovina; Putra, Nicky Rahmana
Indonesian Journal of Agricultural Research Vol. 8 No. 3 (2025): InJAR, Vol. 8, No. 3, In Press
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v8i3.17875

Abstract

Rice serves as a primary food source for almost half of the world’s population and is available in numerous varieties, ranging from pigmented to non-pigmented types. Compounds such as phenolic and flavonoids are well known for their antioxidant capacity and beneficial effects on health. This study investigated the TPC, TFC, and antioxidant activity, assessed through the DPPH assay, in Bario rice varieties, an indigenous crop from Sarawak, Malaysia. Results showed that pigmented varieties (BC, BT, and BMS) exhibited significantly higher TPC compared to non-pigmented varieties (TQR and BAH). At 25 mg/ml, TPC values were 8.31, 4.69, and 4.0 mg GAE/ g dry weight for BC, BT, and BMS, respectively, whereas TQR and BAH recorded 2.48 and 2.41 mg/GAE/g dry weight. A similar trend was observed in TFC, with BMS showing the highest value (3.06 mg QE/g) at 3.5 mg/ml. The DPPH assay further confirmed stronger antioxidant potential in pigmented rice, particularly BC, which achieved 59.61% inhibition at 70 mg/ml. The enhanced antioxidant capacity was attributed to the retention of rice bran, rich in phytochemicals. Overall, the findings highlight the nutritional and functional potential of Bario rice varieties, suggesting their relevance in promoting human health.
Profitability and resource-use efficiency of tomato production in Lalitpur District, Nepal Giri, Avishek; Shrestha, Aavash; Kafle, Nischal; Sai, Rijwan
Indonesian Journal of Agricultural Research Vol. 8 No. 3 (2025): InJAR, Vol. 8, No. 3, In Press
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v8i3.18264

Abstract

Tomato (Solanum lycopersicum L.) is one of the most commercially important and widely cultivated vegetable crops in the mid-hills of Nepal. Protected cultivation methods like polyhouses and rain shelters offer promising opportunities for improving yield and income, particularly during the off-season. However, limited empirical evidence exists on the economic viability and resource use efficiency of such practices at the local level. The study was conducted in the Lalitpur area to evaluate the profitability and resource use efficiency of tomato production. Primary data were gathered from 68 tomato producers using a pre-tested semi-structured questionnaire. The benefit-cost ratio was 1.15, indicating that tomato cultivation in the study area is profitable, with farmers earning an additional 15 paisa for every rupee invested. The analysis revealed that plant protection, fixed cost, and micro-nutrient had a positive and significant effect on gross returns from tomato cultivation, while other expenses (machinery operation, maintenance & irrigation) had a negative and significant effect. The return to scale was 1.23, indicating increasing returns to scale. Additionally, resources such as seed, plant protection, and micro-nutrients were found to be underutilized, while fertilizers, labor, fixed variables, and other inputs such as irrigation and machinery costs were overutilized. Therefore, improving profitability in tomato cultivation can be achieved by reducing expenditure on overutilized resources and increasing investment in underutilized resources. The findings have important implications for farmers, extension workers, policymakers, and future researchers.
Investigating the profit efficiency of garri processors at the post-harvest value chain in Rivers State, Nigeria Nwahia, Ogechi; Mulikat Kehinde, Elemasho; Nwebor, Emmanuel; Egwuma, Henry; Chukwuemeka, Aneke Chigozie; Icha, Eke Stephen
Indonesian Journal of Agricultural Research Vol. 8 No. 3 (2025): InJAR, Vol. 8, No. 3, In Press
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v8i3.18527

Abstract

The study focused on the profit efficiency of garri processors at the post-harvest value chain in Rivers State, Nigeria. A purposive sampling procedure and snowballing techniques were used to select 120 respondents for this study. The study utilized primary data collected with the aid of a structured questionnaire and analyzed using descriptive statistics and inferential statistics, such as the Stochastic (profit function) frontier model. The results revealed that more than 75% of the garri processors in Rivers State were female. The results revealed that garri processors were 37% profit-efficient, while the cost of cassava roots, the cost of grating/milling, the cost of hiring equipment, and the cost of transportation were negatively affecting the profit of garri processors. Years of experience in garri processing and education decrease the profit inefficiency of garri processors, while the cost of the cassava roots increases the profit inefficiency of the garri processors in Rivers State. The study suggested that adequate training should be conducted for garri processors in Rivers State by the extension agents and the Nigeria Stored Products Research Institute (NSPRI), and the government should provide incentives for such training. Also, garri processors in Rivers State should be encouraged to adopt the garri processing plant installed by the Rivers State government.

Page 18 of 18 | Total Record : 178

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