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Caraka Tani: Journal of Sustainable Agriculture
Published by Universitas Sebelas Maret
ISSN : 26139456     EISSN : 25992570     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Caraka Tani: Journal of Sustainable Agriculture publishes original articles, review articles, case studies and short communications on the fundamentals, applications and management of Sustainable Agriculture areas in collaboration with Indonesian Agrotechnology / Agroecotechnology Association (PAGI), Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network), and Indonesian Agricultural Higher Education Communication Forum (FKPTPI). This journal has two issues in a year and it will be published in April and October.
Arjuna Subject : -
Articles 10 Documents
 1 
Search results for , issue "Vol 40, No 1 (2025): January" : 10 Documents clear
The Optimization of Biosilica and Humic Acid to Increase Soil Nutrient Availability and Nutrient Uptake in Rice Plant in Sandy Soil Wanti Mindari; M. Ghufron Chakim; Bakti Wisnu Widjajani; Purnomo Edi Sasongko; Haidar Fari Aditya; Ahmad Mustapha Mohamad Pazi; Seca Gandaseca
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.89018

Abstract

Nutrients in sandy soil are limited due to low absorption capacity and are easily leached or evaporated. Biosilica and humic acid extracted from compost and husk ash can improve the soil structure and absorption capacity to optimize the availability and uptake of nutrients. Therefore, this research aims to examine the optimal application dose of biosilica and humic acid to improve the chemical properties of soil with a sandy texture. The experiment was structured based on a completely randomized design (CRD). Factor 1 consisted of biosilica doses of 0, 0.5, 1.0, and 1.5 tons ha-1, while factor 2 comprised humic acid doses of 0, 20, 40, and 60 kg ha-1. Data analysis was performed using ANOVA, followed by Tukey’s Honest Significant Difference (HSD) test, correlation, and determination analysis. The study results indicate that the combination of biosilica and humic acid contributes to the changes in nutrient availability. The impact of the treatment was observed 90 days after application on the parameters of soil pH, organic C, total N, and exchangeable K. The effects of the treatment were also evident in plant nutrient uptake, specifically in total N in the roots and total K in the stems. The optimal combination for improving soil nutrient availability and nutrient uptake in plant tissues was a biosilica dose of 1.0 tons ha-1 (S2) and humic acid at 40 kg ha-1 (H2).
Development of Sustainable Bioplastic Composite Films from Cocoa Pod Husk Waste Cellulose and Kappa-Carrageenan Esa Ghanim Fadhallah; Ahmad Sapta Zuidar; Sri Hidayati; Haidawati Haidawati; Amarilia Harsanti Dameswary; Aisyah Tri Ramadhani
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.92035

Abstract

Cocoa pod husk (CPH), typically considered agricultural waste, contains cellulose suitable for bioplastic production, offering a sustainable alternative to synthetic plastics. Its reinforcement with kappa-carrageenan is designed to improve the properties of cellulose-based bioplastics while reducing agricultural waste. This study evaluates the effects of cellulose from CPH waste and kappa-carrageenan formulations on bioplastic properties. The cellulose was isolated through a delignification and bleaching process, while the bioplastics were prepared by varying the ratios of cellulose and kappa-carrageenan in six different formulations. The resulting films were evaluated for their physical, mechanical, and barrier properties, as well as their stability and biodegradability. The ratio of cellulose to kappa-carrageenan significantly impacts the films’ properties. Significant improvements in tensile strength were observed in P5 (2 g cellulose, 8 g kappa-carrageenan) and P6 (10 g kappa-carrageenan), increasing by 79% and 240%, respectively, as the cellulose concentration decreased and kappa-carrageenan increased. However, the significant drawback in barrier properties was found in water vapor transmission rate (WVTR), with the higher kappa-carrageenan and lower cellulose concentrations films resulting in increased WVTR values by 13% (P5) and 17% (P6). The bioplastic with P1 (8 g cellulose, 2 g carrageenan), P2 (6 g cellulose, 4 g carrageenan), P3 (5 g cellulose, 5 g carrageenan), and P4 (4 g cellulose, 6 g carrageenan) formulations completely degraded in 3 weeks, while those with higher kappa-carrageenan content degraded faster, with P5 completely degrading in 2 weeks and P6 in 1 week. This study implies a potential reduction in environmental impact by replacing conventional plastics with the development of biodegradable materials derived from agricultural waste and promoting sustainable agricultural practices by utilizing CPH.
The Effect of Silver Nanoparticles Stabilized with Tannic Acid for Nano-Priming on Zea mays L. Seeds Germination Windri Handayani; Richard Owen Tanadi; Aminah Umar
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.85977

Abstract

Silver nanoparticles (AgNPs) have various benefits for application in the agricultural sector, such as nano-seed priming to enhance seedling growth and development. In this research, the effectiveness of AgNPs sizes and concentration to enhance Zea mays seeds germination has been investigated. The AgNPs were synthesized using various concentrations of tannic acid (0.025, 0.25, and 5 mM) to produce AgNPs with different sizes to know their optimum size and concentration. The synthesized AgNPs were characterized using a UV-Vis spectrophotometer to determine the absorption spectrum of AgNPs within 400 to 500 nm. Besides that, a transmission electron microscope (TEM) was used to determine the size and shape of the AgNPs, and an atomic absorption spectrophotometer was used to determine the concentration. The results show AgNPs with sizes of 13.39±2.40, 27.25±4.09, and 46.7±10.75 nm, respectively. Subsequently, AgNPs with concentrations of ~8, ~16, and ~24 mg l-1 were exposed to Z. mays seeds for 24 hours, then germinated for 14 days. The results revealed that AgNPs with a size of ~27 nm and a concentration of ~24 mg l-1 showed the highest germination rate and growth despite the control and other treatments. This indicates that the AgNPs with those properties have the potential as a seed nano-priming agent.
Social Environmental Support in Encouraging Entrepreneurial Behavior of Millennial Farmers in the Special Region of Yogyakarta, Indonesia: An Effort to Realize Sustainable Agriculture Raden Rara Aulia Qonita; Masyhuri Masyhuri; Jamhari Jamhari; Hani Perwitasari
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.92724

Abstract

Sustainable agriculture offers new hope in overcoming the challenges of the decreasing interest of the younger generation in the agricultural sector. Millennial farmers, as part of this younger generation, are the key to successfully implementing sustainable agricultural development. This study aims to explore the influence of the role of parents, friends, extension workers, and media exposure on the entrepreneurial behavior of millennial farmers, and to explore the influence of entrepreneurial behavior on the financial performance of millennial farmers. The research was conducted in the Special Region of Yogyakarta, Indonesia, which was the first province to inaugurate 1,000 millennial farmers. The research sample consisted of 200 millennial farmers, selected using a simple random sampling method. The analysis employed Partial Least Square Structural Equation Modeling (PLS-SEM). The results reveal that the role of parents does not significantly influence millennial farmers’ entrepreneurial behavior. The role of friends, agricultural extension workers, and media exposure significantly influence millennial farmers’ entrepreneurial behavior. Friends provide motivation, support, and share information. Agricultural extension workers offer knowledge transfer, technology, and programs from the government. Media exposure contributes by providing knowledge and shaping perceptions and behavior. Entrepreneurial behavior has a positive and significant influence on financial performance. The research results impact millennial farmers’ regional commissariat/farmer groups, the extension services by agricultural extension workers, and the media for millennial farmers. It is recommended that policies be implemented to strengthen the role of the regional commissariat of millennial farmers/farmer groups, improve extension services, and develop media relevant to millennial farmers.
Biochar Quality During Slow Pyrolysis from Oil Palm Empty Fruit Bunches and Its Application as Soil Ameliorant Amsar Maulana; Mimien Harianti; Salma Athiyya; Teguh Budi Prasetyo; Moli Monikasari; Irwan Darfis; Dewi Rezki; Herviyanti Herviyanti
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.93859

Abstract

The optimal utilization of oil palm empty fruit bunch (OPEFB) waste holds significant potential for biomass bioconversion via slow pyrolysis, presenting a promising alternative for producing high-quality biochar as a soil ameliorant. This study investigates the effects of slow pyrolysis temperatures (≤ 300 °C) on the physicochemical properties of biochar derived from OPEFB and evaluates its efficacy as a soil ameliorant. This study utilized a completely randomized design (CRD) with three replications across two experiments. The first experiment assessed the effect of slow pyrolysis temperature on the quality of biochar derived from OPEFB, with treatments set at four temperatures (150, 200, 250, and 300 °C) levels. The second experiment evaluated the impact of the selected biochar on the surface charge of oil palm plantation soil, applying biochar at five different doses (0, 20, 40, 60, and 80 tons ha-¹). The potential temperature of 200 °C in slow pyrolysis had a significant effect on the quality of biochar from OPEFB with a yield ratio of 27.84% char; proximate (91.95% volatile matter and 0.81% fixed carbon), cation exchange capacity (CEC) [167.73 cmol(+) kg-1], and macro and micronutrients (e.g., C, N, P, K, Ca, Si, Fe, Cu, Zn, and Mn). The potential of O-H, N-H, C-H, and C=O functional groups of biochar from OPEFB for nutrient availability and absorption efficiency proven by the effect of 40 tons ha-1 biochar from OPEFB which significantly increased 80% of soil surface charge [pH by 0.80; organic matter (OM) composition by 19.8%, CEC by 11 cmol(+) kg-1] and nutrients [0.93% C; 0.04% N; 17.57 ppm P2O5; 0.65 cmol(+) kg-1 K] on Inceptisols.
The Prebiotic Index of Dried-Growol Made with Different Cassava Varieties and Cooking Methods Chatarina Wariyah; Nurul Huda; Agus Slamet
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.84506

Abstract

Cassava is a staple food source of carbohydrates that contain high starch levels. However, low amylose starch consumption can result in increased postprandial blood sugar. Therefore, it is necessary to provide food based on cassava, such as dried-growol, which gives a feeling of satiety for a long time and has a prebiotic effect. This research aimed to evaluate the effects of cassava varieties and cooking methods on the resistant starch (RS) content and the prebiotic index of dried-growol produced. This research was carried out in a completely randomized factorial design with two factors, namely cassava variety (M = Mentega, L = Lanting, and K = Ketan) and dried-growol cooking method (Au = Autoclave, ST = Steaming, and PC = Pressure cooker). Dried-growol was processed through preparation, fermentation, boiling, cooling, and drying. The cassava and dried-growol were analyzed for their moisture, starch, amylose, and RS content, while the prebiotic index was analyzed on dried-growol. Prebiotic index testing used two cultures of lactic acid bacteria: Lactobacillus rhamnosus and Lactobacillus plantarum. The results showed that RS levels were only influenced by cassava varieties. Dried-growols from the Lanting variety, cooked with steaming (L-ST) and with a pressure cooker (L-PC), contain high RS, ranging between 22.51 and 27.03 g 100 g-1 dry matter, and have potential as prebiotic food as indicated by the increased viability of L. rhamnosus and L. plantarum bacteria grown in media with cooked dried-growol supplements of L-ST or L-PC, with a prebiotic index between 0.82 and 0.90. Thus, dried-growol has the potential to be a functional prebiotic food that can serve as a staple food that is beneficial for health.
Effectiveness of Antioxidants and Resistance to Diamondback Moth Infestation in Green Mustard Plants Using Ethanol Extracts from Millettia pachyloba Drake Leaves: An In Vitro and In Vivo Evaluation Tran Thi Phuong Nhung; Le Pham Tan Quoc
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.90957

Abstract

The growing interest in medicinal plants as sustainable alternatives to synthetic pesticides has led to the exploration of Millettia pachyloba (MPDE) for pest management. This study aims to evaluate the effectiveness of MPDE in controlling Diamondback moth (DBM) infestation and enhancing oxidative stress tolerance in green mustard plants. The goal is to determine MPDE’s potential to improve pest resistance and mitigate plant oxidative stress. The experiment involved applying MPDE at concentrations of 2, 4, 6, 8, and 10% (w/v) to DBM larvae and green mustard plants, with fipronil 5% SC and water as controls. In vitro, the effects of MPDE on DBM larvae were assessed using bioassays, including oviposition, feeding preferences, and insecticidal activity. In vivo, MPDE was sprayed on green mustard plants infested with DBM larvae, and plant growth, survival, and yield were monitored. Antioxidant activity was measured using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging and reducing power assays. The results of the study at p < 0.05 showed that MPDE significantly reduced oviposition and feeding by DBM, with higher concentrations demonstrating greater effectiveness. MPDE also increased DBM larval mortality, improved stem bending capacity, and enhanced plant survival, particularly at concentrations of 10%, which were comparable to fipronil. Moreover, MPDE exhibited significant antioxidant activity and reversed DBM-induced inhibition of antioxidant enzymes, reducing oxidative stress. These findings suggest that MPDE is a promising, eco-friendly alternative to chemical pesticides, enhancing pest resistance and oxidative stress tolerance in plants.
Screening 27 Genotypes of Eggplant (Solanum melongena) for Resistance to Three Species of Begomovirus Dian Yogi Noviana; Rudi Hari Murti; Panjisakti Basunanda; Ratih Wahyuni; Mustika Ajeng Kartini Putri Pertiwi
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.91211

Abstract

Three primary species of Begomovirus, Tomato yellow leaf curl Kanchanaburi virus (TYLCKaV), Pepper yellow leaf curl Indonesia virus (PepYLCIV), and Tomato leaf curl New Delhi virus (ToLCNDV), have significantly impacted eggplant production in Indonesia, with infections often involving multiple viruses causing severe symptoms. Utilizing resistant cultivars for these viruses is the most effective control method. This study aimed to identify resistant genotypes and evaluate the heritability of eggplant resistance to Begomovirus. In a controlled environment, 27 eggplant genotypes were inoculated with the single of three Begomovirus species separately (molecularly confirmed), using Bemisia tabaci as a vector. The plants were inoculated at the seedling growth stage and observed weekly until the disease progression stabilized. These assessments included monitoring symptoms, the number of symptomatic plants, and assigning disease severity scores to each individual. The data were analyzed using ANOVA and Tukey-HSD tests at α = 5%. The results indicated that EPA 21016 A genotype was resistant to TYLCKaV, with the lowest disease incidence (2.5%) and severity (1.25%), making it a promising parental line for breeding virus-resistant cultivars. However, all genotypes were susceptible to PepYLCIV and ToLCNDV, with a 100% disease incidence. High heritability for TYLCKaV resistance suggests its potential for early-generation selection, while low heritability for PepYLCIV and ToLCNDV indicates the need for enhanced genetic variability.
Decolorization and Bioelectricity Generation from Palm Oil Mill Effluent by a Photosynthetic Bacterial Consortium Pimprapa Chaijak; Alisa Kongthong
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.92943

Abstract

Palm oil mill effluent (POME) is the dark brown agricultural wastewater from palm oil extraction factories. It is difficult to decolorize using conventional methods. Melanoidin is a dark-colored polymer formed through the Maillard reaction which is the primary cause of the dark color in POME. This study investigated the potential of a photosynthetic bacterial consortium consisting of Blastochloris sulfoviridis and Lentimicrobium saccharophilum for POME treatment and bioenergy generation. The consortium effectively removed melanoidin content (68.89±0.84%) and color (60.87±1.22%) from POME without the addition of chemicals or culture medium. Additionally, a microbial fuel cell (MFC) integrated with the consortium generated apower output of up to 5.70±1.06 W m-3. The degraded metabolites were analyzed by gas chromatography-mass spectrometry (GC-MS) after treatment. The results revealed that melanoidin was converted to 1-ethyl-2-methylbenzene, 1,2,4-trimethylbenzene, decamethylcyclopentasiloxane, dodecamethylcyclohexane, butylated hydroxytoluene, and stigmasta-3,5-diene. Following treatment, the cell pellet was recovered and analyzed for valuable by-products. Carotenoid and astaxanthin pigments were extracted with yields of 0.32±0.01 and 0.02±0.00 mg g-1, respectively. These findings demonstrate the versatility of the photosynthetic bacterial consortium, which offers a sustainable solution for POME treatment while simultaneously POME decolorization and producing bioenergy and valuable compounds.
Stakeholders and Farmers’ Preferences Towards Contract Attributes: Evidence from Hybrid Maize Production in Indonesia Destu Syah Inanda; Pandu Laksono; Any Suryantini; Arini Wahyu Utami
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.88996

Abstract

The availability of quality seeds is critical to supporting the sustainability of agriculture, which is further reinforced by the success of contract farming between seed companies and partner farmers. To foster a mutually beneficial partnership, it is essential to align the needs of farmers with the facilities and services provided by the company through well-defined contract terms and conditions. This study aims to explore the contract attribute preferences and their importance levels among farmers, growth leaders, and companies using a quantitative approach. A discrete choice experiment utilizing the conditional logit model was employed to investigate the preferences of 170 farmers, while a descriptive analysis was used to outline the preferences of other stakeholders. The findings indicate that farmers prefer written agreements over informal ones, favor shorter contract durations, and demand higher prices. Additionally, farmers showed a marked preference for receiving inputs, incentives, and credits. The preference patterns of stakeholders align with those of farmers regarding agreement form, inputs, price, incentives, and credit, although stakeholders tend to favor contracts with longer durations. Based on the rank-based quotient method, both growth leaders and farmers identified price, input subsidies, incentives, credits, agreement form, and duration as the most important attributes in maize seed partnership contracts, in descending order of importance. Contrarily, the company prioritizes input subsidies over other attributes, including price, duration, credit, incentive, and agreement form. These insights can inform the design of more suitable and effective contracts, thereby fostering sustainable partnership relationships in the future.

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