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Andree Wijaya Setiawan
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INDONESIA
AGRIC
Published by Universitas Kristen Satya Wacana
ISSN : 08549028     EISSN : 25499343     DOI : https://doi.org/10.24246/agric.2023.v35.i1
Core Subject : Economy, Science, Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Social Sciences
AGRIC Journal of Agricultural Science is a peer-reviewed and published two times a year by Agriculture and Business Faculty of Universitas Kristen Satya Wacana. Agric journal publishes original articles on agronomy, horticulture, plant breeding, plant science, pest or diseases of plant, agriculture and food processing, food science, microbiology, biotechnology, agribusiness.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 197 Documents
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TECHNOLOGIES TO REDUCE EMISSION OF METHANE AND NITROUS OXIDE IN RICE FIELDS: A BRIEF REVIEW Anicetus Wihardjaka
Agric Vol. 34 No. 2 (2022)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2022.v34.i2.p197-210

Abstract

Climate change caused by increasing anthropogenic greenhouse gas concentrations can threaten food security. Agricultural land is a source of food availability, however it is one source of GHG emissions, especially methane and nitrous oxide. Integration management of land, water, and plants in an integrated manner can be an effort to reduce the impact of climate change. This paper aims to inform the technologies to reduce emissions of methane and nitrous oxide in rice fields. One of the technologies to mitigate greenhouse gas emissions on agricultural land is through the use of natural materials as an inhibitor for the formation of methane and nitrous oxide in the soil due to the content of secondary metabolites in natural ingredients. Natural materials can simultaneously increase nitrogen nutrient uptake and improve crop yields. The methane production in rice fields is suppressed by more than 30% by coconut fiber, turmeric rhizomes, leaf of Ageratum conyzoides, and the leaf of Cosmos caudatus; while application of Cosmos caudatus and Ageratum conyzoides can also reduce the production of nitrous oxide more than 20%, respectively.
SIDEROPHORE PRODUCTION OF THE RHIZOBACTERIA ISOLATED FROM LOCAL “KAMBA” RICE PLANTS, POSO REGENCY IN CENTRAL SULAWESI Sri Sudewi; Baharuddin Patandjengi; Ambo Ala; Muh Farid BDR; Abdul Rahim Saleh; Ratnawati Ratnawati
Agric Vol. 34 No. 2 (2022)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2022.v34.i2.p225-238

Abstract

Rhizobacteria isolated from plant roots have the ability to produce siderophore compounds. These compounds play a role in inhibiting the growth of pathogens by binding to iron (Fe3+) which is needed by pathogens in their development. This research was aimed to find out the siderophore-producing bacteria isolated from local Kamba rice plants and their potential as biocontrol agents. Among the 28 isolates that were successfully isolated from the Kamba local rice rhizosphere, 10 isolates had the potential to produce siderophores with different morphological characters. The test was carried out to see the bacterial isolates capabilities to produce siderophores from two types of siderophores namely catechol and salicylate types. For the catechol type, the highest concentration of siderophore was found in the KBA8 bacterial isolate with 10.990 mg L-1, while the lowest was in the KBA1 bacterial isolate with only 5.876 mg L-1. The salicylate type siderophore with the highest concentration produced 9.493 mg L-1 was from the RKGU15 isolate and the lowest was found in KBU14 isolate which produced only 2.994 mg L-1. The isolates included in the Gram-positive group were 4 isolates while the Gram- negative group were 6 isolates and 90% isolates were able to produce the enzyme catalase. The results of this study indicate that all bacterial isolates can produce siderophores so that they have the potential as biocontrol agents to support environmentally friendly and sustainable agriculture.
IDENTIFIKASI MORFOLOGI DAN HUBUNGAN KEKERABATAN TANAMAN PORANG (AMORPHOPHALLUS MUELLERY BLUME) DI KECAMATAN KUMPEH ULU KABUPATEN MUARO JAMBI Lizawati Lizawati; Elis Kartika; Yulia Alia; Dedy Antony
Agric Vol. 35 No. 1 (2023)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2023.v35.i1.p27-44

Abstract

Porang (Amorphophallus muelleri Blume) is a group of tuber plants that are useful as food and medicine so that they have bright prospects for development. In Jambi Province, especially in Muaro Jambi Regency, porang plants are found growing wild among duku trees. This study aims to determine the morphological character of porang plants and to determine the level of diversity and kinship of porang plants found in Kumpeh Ulu District, Muaro Jambi Regency. The research was carried out from August to September 2021, in 18 villages located in the Kumpeh Ulu District. The research was conducted using a non-experimental descriptive method with proportionate stratified random sampling, and the sample was measured quantitatively and qualitatively. The morphological identification of porang plants from 18 villages in Kumpeh Ulu District showed similarities in bulbil shape, bulbil surface colour, bulbil surface texture, bulbil flesh colour, leaf shape and petiole colour. However, there were differences in leaf colour, tuber flesh colour, tuber surface texture and tuber shape.
APPLICATION OF NPK 15-10-12 FERTILIZER TO INCREASE THE YIELD OF PADDY FIELD, FERTILIZATION EFFICIENCY, AND EFFECTIVITY OF FERTILIZING IN INCEPTISOL Antonius Kasno; Kiki Zakiah; I Wayan Suastika
Agric Vol. 34 No. 2 (2022)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2022.v34.i2.p211-224

Abstract

The quality and effective fertilizers support site-specific nutrient management of paddy fields, which can increase yields and efficiency of fertilizer. Fertilizer formulas should be based on soil nutrient status and crop requirements. This study aims to examine the reformulation of compound NPK fertilizers for lowland rice. The study was conducted in Cibungbulang, Bogor Regency from October 2020 - March 2021. The experimental design was carried out using a randomized complete block design with 10 treatments, and 3 replications. The treatments consisted of five levels of NPK 15-10-12 fertilizer doses, plus control treatment, NPK 15-15-15 and single NPK as standard, and additional treatment with the addition of straw compost. The plots were made measuring 5 m x 5 m. The results showed that statistically, the application of NPK 15-10-12 fertilizer gave the same effect on plant height, the number of tillers, weight of dry grain harvested, the weight of dry milled grain, and weight of dry straw compared to single NPK fertilizer and NPK 15-15-15. The optimum dose of NPK 15-10-12 fertilizer for lowland rice is 220 kg ha-1 combined with Urea at a dose of 225 kg ha-1. At the same dose (300 kg ha-1) the efficiency of NPK 15-10-12 fertilizer (9.70 kg grain kg-1 fertilizer) was higher than NPK 15-15-15 fertilizer (8.47 kg grain kg-1 fertilizer). Higher efficiency is indicated by lower fertilization doses. The RAE value of NPK 15-10-12 (142%) was higher than that of NPK 15-15-15 at the same dose and single NPK. This research implies that the formula for compound NPK 15-10-12 fertilizer can be used as a substitute for compound NPK 15-15-15 fertilizer.
THE ABILITY OF Lactiplantibacillus plantarum TSD-10 AND DR-162 TO REDUCE AFLATOXIN AND MICROBIAL CONTAMINATION OF CORN Rusli Fidriyanto; Roni Ridwan; Rohmatussolihat Rohmatussolihat; Wulansih Dwi Astuti; Yashanti Berlinda Paradisa; Ki Ageng Sarwono; Ainissya Fitri; Yantyati Widyastuti
Agric Vol. 35 No. 1 (2023)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2023.v35.i1.p1-12

Abstract

Feed safety becoming the main factor to produce good quality food. The purpose of this study was to evaluate the ability of lactic acid bacteria in degrading aflatoxin B1, suppressing the growth of contaminant bacteria, and its application on feed. Biological degradation of aflatoxin B1 (AFB1) in liquid cultures and Escherichia coli and Saccharomyces aureus inhibition by Lactobacillus plantarum were examined. Fermentation of corn for 24 hours by L. plantarum was used to determine the ability of LAB to decrease E. coli, coliform, mold, and AFB1 on a solid substrate. This study showed that both L. plantarum TSD-10 and DR-162 could inhibit E. coli growth at 3% and 5% supernatant addition. The addition of 5% L. plantarum DR-162 and TSD-10 could inhibit S. aureus at 97.40% and 97.28%, respectively. Furthermore, viable cells of L. plantarum DR-162 and TSD-10 removed 56.97% and 64.65% AFB1 within 72 h of incubation, respectively. The AFB1 reduction by nonviable cell was lower than the viable cell. The population of E. coli, coliform, and mold completely disappeared in both fermentation treatment of corn by L. plantarum DR-162 and TSD-10 at 3% and 5%. AFB1 significantly decreased by 17.57% and 22.60% on 5% L. plantarum DR-162 and TSD-10 treatment.
ANALISIS PENDAPATAN ANGGOTA DAN NON-ANGGOTA KOPERASI JAGUNG DI DISTRIK MUHANGA, RWANDA Felicien Nzamurambaho; Titik Ekowati; Siwi Gayatri
Agric Vol. 34 No. 2 (2022)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2022.v34.i2.p249-260

Abstract

This study analyzed farmers’ income between members and non-members of agricultural cooperatives in Muhanga District, Rwanda. The research used a descriptive design based on quantitative approaches; 60 cooperative members and 60 non-cooperative members which were maize farmers selected randomly in the study, plus 6 local leaders and staff of Tuzamurane Cyeza Cooperative who were used as key informants. Data collection tools were questionnaires and interviews. The collected data were analyzed by income and the independent sample t-test analysis to measure farmers’ income between members and non-members of the cooperative. The findings showed that Tuzamurane Cyeza Cooperative provided services such: as easy access to credit, easy access to agricultural inputs, and acquisition of new technology and helped farmers to increase income from the cooperative. The results from the calculation indicated that the mean income of maize farmers who are members of the cooperative (Group 1), 366420 RWF is greater than the mean income of maize farmers who are non-members of the cooperative (Group 2), 137151RWF; (1RWF=14.04IDR). Further, the value of Sig. (0.047) which less than 0.05 was a good indicator that the variance in incomes of maize farmers who are members of the cooperative and non-members of the cooperative was significantly different. Our findings concluded that agricultural cooperatives’ membership contributed to expanding access to markets, and people need to unite themselves in cooperatives because they play a crucial role in reducing poverty, improving food security, and generating employment opportunities.
Efek Interaksi Sulfate (SO42-) dan Kromium (CrO42-) terhadap Pertumbuhan dan Akumulasi Cr6+ pada Tagetes erecta L. Sri Kasmiyati; Gabriella L. Mataradja
Agric Vol. 35 No. 1 (2023)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2023.v35.i1.p45-60

Abstract

Chromium is a heavy metal that is toxic, bioaccumulative, persistent, and cannot be decomposed in the environment. The Cr6+ ion is a chromium ion that has the highest toxicity among other chromium ions, so its presence in the environment is hazardous for plants, animals, and humans. Sulfur is an essential element for plants, whose presence can reduce Cr6+ concentrations in the terrestrial environment by inhibiting the uptake of Cr6+ by plants. Tagetes erecta is a bioremediation agent plant that can remediate land polluted with Cr6+ waste. In this research, we studied the growth of T. erecta in media polluted with Cr6+ and sulfate and its ability to accumulate of Cr6+. Several parameters observe in this experiment, i.e. growth parameters, namely plant height, number of leaves, number of flowers measured at the end of the study, dry weight, root length, and Cr6+ concentration estimated using the diphenylcarbasid method. The results showed that the plant height of T. erecta. was not significantly different, and sulfate addition did not affect plant height. The addition of sulfate affected the number of leaves and flowers, dry weight of root shoots, root length, and Cr6+ content in T. erecta. polluted with Cr6+. so that in these parameters, there was a significant difference in the addition of Cr6+ and sulfate on growth of T. erecta and its ability to Cr accumulation.
ANALYSIS OF DIFFERENCE IN SALES PRICE OF ARABICA COFFEE CERTIFIED BY SUSTAINABLE AGRICULTURE INSTITUTES RAINFOREST ALLIANCE AND FAIRTRADE IN CENTRAL ACEH (Case Study of Rahmat Kinara Multi-Purpose Cooperative) Ilma Fitri; Yusak Maryunianta; Riantri Barus; Tavi Supriana
Agric Vol. 35 No. 1 (2023)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2023.v35.i1.p61-72

Abstract

Certification is the judgment of a third party as a liaison between the buyer and the seller, where both parties must meet all of their respective certification criteria or standards. The Rahmat Kinara multi-purpose cooperative is one of the cooperatives engaged in the trade of Rainforest Alliance and Fairtrade-certified Arabica coffee. This study aims to determine the difference between the selling price of Rainforest Alliance and Fairtrade-certified coffee at the Rahmat Kinara multi-purpose cooperative, Pegasing, Central Aceh. This research uses time-series data, analyzed using the Mann-Whittney Test (U Test). The results of the Mann-Whittney Test (U Test) showed a significant value of (0.000) < α 0.05, meaning that there is a significant difference between the selling price of Rainforest Alliance and Fairtrade-certified coffee. Sustainable Agriculture Support at the Rahmat Kinara multi-purpose cooperative improved the quality of the coffee crop (ecologically), helped withstand volatile price changes in global markets (economically), assisted in improving farm management, negotiating leverage, and providing access to premium markets (socially fair).Certification, Rainforest Alliance, Arabica Coffee, Fairtrade
MORPHOLOGICAL CHARACTERISTIC OF VIERUL LOCAL GRAPE (Vitis spp.) CUTTING SEEDS ON PODZOLIC SOIL USING VARIOUS CONCENTRATION OF AUXIN SOAK Fitria Nugraheni Sukmawati; Saktiyono Sigit Tri Pamungkas; Tusrianto Tusrianto; Alfu Laila; Yudhi Pramudya
Agric Vol. 35 No. 1 (2023)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2023.v35.i1.p115-132

Abstract

The development of grapes (Vitis vinifera) has obstacle among others are limited optimal land and difficult nurseries. Suboptimal land use for grape cuttings can use red yellow podzolic soil (ultisol). Podzolic soil has an acidic pH and low macro and micro nutrient uptake but can still be used as a growing medium. Vierul local grapes are a type of grape that has begun to be developed as root stock in nurseries but needs to be improved for its root success using a synthetic phytohormones bath of napthaline acetic acid (NAA). The purpose of this study was to determine the morphological character of vierul local grape cuttings at various concentrations of NAAsoaking in podzolic soil growing medium. This research has been carried out in a screen house from August to December 2021. This study used a non-factorial completely randomized design (CRD) with 3 treatments and 3 replications as block consisting of F0, F1, F2, F4 following by 0, 2, 4, 6 g L-1 respectively. The morphological characteristics observed is number of bud break, time of leaves appear, number of leaves, tendril length and percentage of live cuttings. The results of the study were analyzed using ANOVA at the 5% level and continued using the DMRT at the 5% level. The result showed that soaking of NAA at a concentration of 0 g L-1 (F0) had the best result for the variable number of bud break and number of leaves. Concentration of 6 g L-1 (F3) had the best result for variable length of the tendril while for the variable when the leaves appear, NAA soaking has no significant effect. The percentage of live cuttings is still low because it is influenced by the quality (material) of cuttings, the age of woodstock, growing media and water availability.
THE POTENTIAL OF POTATO CULTIVATION (Solanum tuberosum L.) WITH THE APPLICATION OF PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) AND TRICHO POWDER COMMERCIAL ON MEDIUM LAND Jennefer Constantia; Siti Nur Jannah; Wijanarka Wijanarka; Susiana Purwantisari
Agric Vol. 35 No. 1 (2023)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2023.v35.i1.p133-148

Abstract

Permintaan pasar terkait kentang sangat tinggi mengakibatkan lahan budidaya semakin meningkat. Hal ini beresiko bagi keseimbangan lingkungan karena dapat menyebabkan bencana alam. Oleh karena itu, diperlukan inovasi budidaya kentang di lahan medium. Lahan medium merupakan daerah dengan elevasi (ketinggian) 300-700 mdpl. Budidaya di lahan medium akan menyebabkan hasil yang diperoleh tidak dapat maksimal jika dibandingkan dengan hasil budidaya kentang di dataran tinggi serta tanaman akan rentan penyakit. Peran mikroorganisme yang terkandung dalam PGPR dan Tricho Powder diperlukan untuk memperoleh hasil yang maksimum serta membantu menekan intensitas penyakit. Penelitian ini bertujuan untuk mengetahui pengaruh perbedaan konsentrasi PGPR komersial dalam meningkatkan hasil panen budidaya kentang, mengetahui pengaruh perbedaan konsentrasi Tricho Powder dalam menekan intensitas serangan penyakit, dan mengetahui salah satu jenis kandungan dalam PGPR. Penelitian ini dilakukan dengan Rancangan Acak Lengkap (RAL yang terdiri dari 6 perlakuan dengan 4 ulangan. Perlakuan dalam penelitian ini meliputi P0 (Kebiasaan Petani), P1 (PGPR 20mL), P2 (PGPR 40 mL), P3 (Tricho Powder 80gram/10Liter), P4 (Tricho Powder 150gram/10L), dan P5 (PGPR 20mL+Tricho Powder 80gr/10L). Data yang diperoleh kemudian dianalisis dengan ANOVA apabila terdapat signifikasi kemudian dilanjutkan dengan uji lanjutan yang ditentukan berdasarkan nilai KK (Koefisien Keragaman) yang di peroleh. Hasil penelitian menunjukkan bahwa,perbedaan konsentrasi PGPR komersial memberikan pengaruh positif terhadap hasil panen kentang dengan perlakuan kombinasi PGPR 20mL/10L+Tricho Powder 80 gr/10L (P5) merupakan perlakuan terbaik menghasilkan rerata tertinggi pada setiap parameter. Selain itu pada perlakuan yang sama, intensitas penyakit berhasil ditekan sebesar 37.55% dibandingkan dengan perlakuan kontrol. Berdasarkan kemampuanya dalam menghasilkan IAA (Indol Acetic Acid) dari 5 isolat yang diperoleh hanya 1 isolat (IS 5) yang menunjukkan hasil positif dan dilanjutkan ke uji molekuler.Genus Bacillus teridentifikasi sebagai salah satu jenis kandungan dalam PGPR dan memiliki kekerabatan terdekat dengan spesies Bacillus velezensis.

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