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Indonesian Journal of Agricultural Research

InJAR
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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.

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Articles 178 Documents

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Growth and Yields Response of Some Varieties of Soybean (Glycine Max (L) Merill) on Ultisol Soil Tambunan, Syariani; Afkar, Afkar; Sebayang, Nico Syahputra
Indonesian Journal of Agricultural Research Vol. 2 No. 3 (2019): InJAR, Vol. 2, No. 3, November 2019
Publisher : Talenta Publisher

Soybean is an agricultural product that has a good nutritional value, especially Protein content. This study aims to find superior varieties that have a wide adaptation to the sour soil especially in Ultisol soils. The study was conducted in Gulo Village, Darul Hasanah Sub-District, Southeast Aceh Regency, Aceh Province, from May to September 2019. The study used a non factorial randomized block design (RBD), with 4 treatment varieties (V) levels that were repeated as many as 4 replications; namely V1: Anjasmoro Varieties, V2: Dena Varieties, V3: Deja Varieties 1, V4: Detaptive Varieties 1, Variance analysis test results showed that the plant height was 1 WAP, Age 2 WAP, Age 3 WAP, Age 4 WAP, Age 5 WAP , and Age 6 WAP had no significant effect. However the highest yield on 1 WAP was found in variety V4 (10.40) in the second test and the lowest was in the first test. V2 was second test. While the best number of segments and branches were produced by V3 treatment. The best results for the total number of pods, number of pods, total empty pods, number of sample plant seeds and weight of sample plant seeds were produced by treatment V3.

Influence of Dayak Onion Extract Concentration (Eleutherine palmi folia (L.) Merr) and Length Storage on Weight Decrease, Haugh Unit, and Albumen pH of Duck Egg Aam Gunawan; Zakir, Muhammad Irwan; Dharmawati, Siti; Rasyidi , Muhammad
Indonesian Journal of Agricultural Research Vol. 2 No. 3 (2019): InJAR, Vol. 2, No. 3, November 2019
Publisher : Talenta Publisher

The purpose of this study was to study the effect of immersion on dayak onion extract and storage time and the interaction of these two factors on decreasing of egg weight, haugh unit value and albumen pH of duck egg. The study used a completely randomized design of factorial pattern 4 x 4 with 4 replications. The treatment is as follows: The first factor is the concentration of onion dayak extract (A), consisting of: A0 = Eggs storage placed at room temperature; A1 = 10% concentrated of dayak onion extract; A2 = 20% concentrated of dayak onion extract; A3 = 30% concentrated of dayak onion extract; The second factor is the length of storage (B) consists of: B0 = 7 days. B1 = 14 days. B2 = 21 days. And B3 = 28 days. Research data were analyzed using analysis of variance and continued by Tukey Test. The results showed that the concentration of dayak onion extract did not affect the reduction in egg weight, but did affect the haugh unit and albumen pH. Egg weight reduction ranged from 0.92-1.02. Haugh unit and pH of albumen at 10% and 30% concentration of dayak onion extract did not differ, while the 0% concentration differed from all other treatments. Interaction effects between concentration of dayak onion extract and length storage were also significant for egg weight loss, Haugh unit, and pH of albumen. It is recommended that for preserving duck eggs, it is better to use a concentration of 30% onion extract.

Analysis of Factors Affecting the Competitiveness of Indonesian Crude Palm Oil (CPO) Export in the Global Market Yanita, Mirawati; Napitupulu, Dompak MT; Rahmah, Karina
Indonesian Journal of Agricultural Research Vol. 2 No. 3 (2019): InJAR, Vol. 2, No. 3, November 2019
Publisher : Talenta Publisher

This study aims to: (1) Analyze the development of Indonesian CPO export competitiveness in the global market from 1998 to 2017 (2) Analyze factors affecting the competitiveness of Indonesian CPO export in the global market from 1998 to 2017. The data used is time series spanning 20 years (1998-2017). The competitiveness of Indonesian CPO export in the global market is presented descriptively in the form of images, while affecting factors are analyzed using a multiple linear regression model. The results show that Indonesian CPO has comparative and competitive competitiveness in the global market. The results of multiple linear regression tests indicate that the factors that comparatively affect the competitiveness of Indonesian CPO exports in the global market are domestic CPO production, global CPO prices and petroleum prices while factors that competitively affect competitiveness are â€‹â€‹oil palm plantation area, Malaysian export volume, soybean oil price and exchange rates. Factors that positively impact Indonesian CPO competitiveness are domestic CPO production, oil prices and the â€‹â€‹oil palm plantation area. Improving these variables will increase the competitiveness of Indonesian CPO exports, while an increase in global CPO prices, soybean oil prices and the exchange rate will reduce the competitiveness of CPO exports. The variable that has no significant effect is the export volume of Malaysia.

The Role of Mungbean (Phaseolus radiatus) as a Fat Replacer on the Physicochemical Properties of Ice Cream Nugroho, Pulung; Hartayanie, Laksmie; Dwiana, Kartika Puspa
Indonesian Journal of Agricultural Research Vol. 2 No. 3 (2019): InJAR, Vol. 2, No. 3, November 2019
Publisher : Talenta Publisher

Fat replacer can be an alternative in the processing of making ice cream. The use of fat replacers can replace the role of fat as forming texture, flavor, and aroma without reducing the quality of the ice cream. In this research, green beans we used as a fat replacer as a substitution to whipped cream. Mung beans are a high source of protein and carbohydrates. The purpose of this study was to determine the physicochemical characteristics of ice cream with the addition of mung bean flour and determine the optimal ratio of whipped cream optimal and mung bean as a fat replacer. Based on the results of research that has been done ice cream with a ratio of green bean flour: whipped cream (50: 50) has the best quality with a fat content of 7.74%, overrun 78.13%, hardness 17.46 kgf, viscosity 1170 cP.S, melting time is 49.17 minutes. It was concluded that the best ice cream was produced from addition of 25% and 50% green bean flour.

Distribution Strategy of Subsidized Fertilizer in Smallholder Oil Palm Plantation at Air Batu Subdistrict, Asahan District, North Sumatra Evand, Yogi; Chalil, Diana; Ginting, Rahmanta
Indonesian Journal of Agricultural Research Vol. 2 No. 3 (2019): InJAR, Vol. 2, No. 3, November 2019
Publisher : Talenta Publisher

Palm oil is an important commodity for Indonesia. It is an export oriented commodity with the highest export income contribution. Initially, Indonesian palm oil plantations were developed by major companies and since 1986, smallholders have started to establish. In 2018, the share of smallholders has reached 42% of the total Indonesian oil palm plantation areas. However, unlike major companies, most smallholdersâ€™ lack capital. Unfortunately, oil palm smallholders are not in the priority list of subsidized fertilizer recipients. As a result, smallholders have an average productivity that is still lower than private and state company plantations, which are 585.3 ton/ha/year and 5828 ton/ha/year, respectively. This does not only influence smallholder income but also the Indonesian palm oil industry. Therefore, this study will analyze subsidized fertilizer distribution for oil palm smallholders in Air Batu Subdistrict, Asahan District, which are determined purposively as one of the oil palm smallholding centers in North Sumatera. Data were collected from 1 (one) staff of the Agriculture office in Asahan, 2 (two) extension agents, 4 (four) fertilizer shopkeepers, and 24 smallholders in Air Batu. The agriculture office staff and extension agents were selected by purposive sampling based on their knowledge and responsibility in the distribution of subsidized fertilizers while shopkeepers and smallholders were selected with snowball sampling technique. Aside from timeliness, the overall distribution of subsidized fertilizer in Air Batu, Asahan is relatively good. Internal factors are negative since weaknesses are more dominant than strengths, while external factors are positive, since opportunities are more dominant than threats. The Asahan Agriculture Staff have made some fundamental changes, namely improving the management system both internally and externally. Therefore, they can use their strengths to overcome their weaknesses and threats to utilize the available opportunities as well as possible.

Physical and Organoleptic Quality of Culled Layers Chicken Meat Using Marinated Asam Kandis Fruits (Garcinia dioica Blume) Patriani, Peni; Hesti Wahyuni, Tri
Indonesian Journal of Agricultural Research Vol. 2 No. 3 (2019): InJAR, Vol. 2, No. 3, November 2019
Publisher : Talenta Publisher

Asam Kandis is one of the fruits with a sour taste that is often used in the spice. Asam Kandis is very effective as a food flavoring such as in meat and fish. Culled layers meat usually has a rough texture, tough and not preferred because it has a rough tenderness, so it needs natural herbs to improve tenderness or maintain the physical. This study uses a completely randomized design with 4 treatments and 4 replications. The treatment in this study marinated culled layers chicken in Asam Kandis consisting of 4 levels: 0%, 5%, 10%, and 15%. Research aimed to improve the physical and organoleptic quality of culled layers of chicken meat using Asam Kandis. The results obtained physical and organoleptic quality in culled layers chicken meat, which includes pH, drip loss, and tenderness, significantly affect the marinated Asam Kandis. Water content and cooking losses do not affect the marination of Asam Kandis and are quite effective. Conclusion in this research Asam Kais has a quite good effect on improving the quality of culled layers of chicken meat. It is recommended marination using Asam Kandis with a level of 9% effective maintain the quality of culled layers meat.

The Effect of Nutrition Education on Studentsâ€™ Consumption Behavior at Universitas Slamet Riyadi Surakarta Suhartatik, Nanik; Patmasari, Diyah Ayu Eka; Wulandari, Yustina Wuri; Mustofa, Akhmad; Handayani, Sri
Indonesian Journal of Agricultural Research Vol. 3 No. 1 (2020): InJAR, Vol. 3, No. 1, March 2020
Publisher : Talenta Publisher

The risk of obesity and chronic diseases rises with the increase in oneâ€™s level of welfare. Among the influencing factors for such phenomenon are eating behavior and lifestyle. Modern lifestyle which demands that everything be done in an instant makes people consume food with the nutritional adequacy disregarded. The emergence of fast food and junk food in Indonesia has also exerted an influence on peopleâ€™s consumption pattern. Some preventive and mitigating efforts can be made, one of which is provision of nutrition education. This research was aimed to determine the influence of nutrition education on the change of consumption knowledge, behavior, and habit of the students of Universitas Slamet Riyadi Surakarta. The respondents enrolled in this research were of the ages of 19â€“21 years. They were purposively selected on the basis that some of them were able to plan and select which food to be consumed. This research employed questionnaires during pre-test and post-test, with the respondents assigned to 2 groups of 32 students each. The first group received nutrition education, while the second received none. Results showed that the provision of nutrition education for college students didnâ€™t influence studentsâ€™ knowledge, attitude, and behavior when consuming food for both groups. The preference of the student college to food consumption probably influenced by another factors. It would need another study to evaluated factors that influenced the food preference of student college.

Effect of the Types and Percentages of Stabilizer on the Quality of Instant Garfish Condiment Marchelina, Christine; Sinaga, Hotnida; Lubis, Linda Masniary
Indonesian Journal of Agricultural Research Vol. 3 No. 1 (2020): InJAR, Vol. 3, No. 1, March 2020
Publisher : Talenta Publisher

The purpose of this research was to determine the effect of stabilizer types and percentages on the quality of instant garfish condiment. The research used a group randomized design factorial with two factors, i.e.: types of stabilizer (CMC; Arabic gum; gelatin) and percentage of stabilizer (0.0%; 0.5%; 1%; 1.5%). The results showed that stabilizer types had a highly significant effect on water absorption index, water solubility index, vitamin C, and color index. Moreover, the stabilizer had no significant effect on organoleptic aroma and taste. In the meantime, stabilizer percentages had a highly significant effect on water absorption index, water solubility index, vitamin C, color index, and organoleptic aroma. However, the stabilizer percentages gave no significant effect on organoleptic taste. Interaction between the two factors had a highly significant effect on water absorption index and vitamin C and had a significant effect on color index. Furthermore, the interaction had no significant effect on water solubility index, organoleptic aroma and taste. The best treatment product was resulted from the use of 1.5% CMC as stabilizer.

An Estimation of Technical Efficiency of Red Chili Pepperâ€™s Growers in Central Bangka Purwasih, Rati; Bahtera, Novyandra Ilham; Yulia
Indonesian Journal of Agricultural Research Vol. 3 No. 1 (2020): InJAR, Vol. 3, No. 1, March 2020
Publisher : Talenta Publisher

In Central Bangka, The red chili pepperâ€™s productivity is still considered at low level. It is corroborated from comparison between the productivity of red chili pepper which is computed as 35.6 quintal per hectare while the potential productivity of the genetics of red chili pepper is 200-220 quintal per hectare. It is presumed that the productivity of red chili pepper is technically inefficient. The aim of the study is to analyze factors that affect the production of red chili pepper and the technical inefficiency. The study also determines the level of technical efficiency of red chili pepper on smallholders who participate in the agriculture productivity improvement program in Central Bangka Regency. Survey was carried out to collect the data with purposive sampling method. The criteria of respondents were those red chili pepper smallholders who had involved with the agriculture productivity improvement program. The total sampled respondents were 43 smallholders. Stochastic frontier analysis with the Maximum Likelihood Estimate was used to analyze the data. The study discovered the factors that affect the production of red chili pepper were labor, potassium fertilizer, insecticide, and fungicide. Furthermore, the productivity of red chili pepper was considered as technically inefficient which was shown from the average score of technical efficient, 0.54. Finally, the study revealed that side job became factor that could increase the technical inefficiency of red chili pepper farming activity while the frequency of attending the empowerment program and farmer field school were otherwise.

The Shelf Life of Wet Noodle Added by Gendarussa (Justicia gendarussa Burm. F.) Leaves Extract Yuliani, Yuliani; Sari, Rinten Anjang; Emmawati, Aswita; Candra, Krishna Purnawan
Indonesian Journal of Agricultural Research Vol. 3 No. 1 (2020): InJAR, Vol. 3, No. 1, March 2020
Publisher : Talenta Publisher

Gendarussa (Justicia gendarussa) is a herbaceous plant with a height of 1-1.5 m. Its stem and leaves extract show antimicrobial and antioxidant activities and have potent cytotoxic activity on the human cancer cell. Gendarussa has a better flavor than stem. Its aqueous extract shows higher extract than ethanol extract. The present study evaluated the preservative effect of aqueous extract of gendarussa leaves (GL) in prolonging the shelf life of wet noodles. The single-factor experiment (GL of 0, 50, 100, 150, and 200 g was extracted in hot water of 100 mL) arranged in a completely randomized design was applied in this research. Total bacterial and mold were observed as well as sensory hedonic characteristics during storage. Data were analyzed using SPSS ver.25. The microbial quality data were analyzed by the Kruskal-Wallis test followed by pair comparison with Bonferroni correction, while the sensory data analyzed by Friedman test continued by Wilcoxon Sign Rank Test. The results showed that the addition of GL aqueous extract (200 g in 100 mL hot water) could prolong the shelf life of wet noodles. The microbial quality of the wet noodle, which preserved at room temperature for 24 h still meet the Indonesian standard of wet noodle (SNI: 2987-2015) for total bacteria and 36 h for total molds. The wet noodles have log cfu/g of 5.35 and 1.58 for total bacterial and mold, respectively. The panelists preferred the color, aroma, texture, and taste of wet noodles produced with the GL aqueous extracts. The most preferred one was wet noodle with the addition of GL aqueous extract at a concentration of 200 g per 100 mL with the characteristic of greenish-white color, not scented with GL, chewy texture, and slightly flavored GL.

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