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Merakati Handajaningsih
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Akta Agrosia
Published by Universitas Bengkulu
ISSN : 14103354     EISSN : 26157136     DOI : https://doi.org/10.31186/aa
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Akta Agrosia is dedicated to researchers or academics who intent on publishing research, scientific thinking, or other scientific ideas. The articles published in the Akta Agrosia are the author’s original works covering on Crop Production, Crop Physiology, Pest and Disease, Soil Science, Agronomy, Plant Genetics, Plant Breeding, Plant Biotechnology. Akta Agrosia is published by the Department of Crop Production, Faculty of Agriculture, University of Bengkulu, biennially in June and December. ISSN:1410-3354 (printed media) and eISSN: 2615-7136 (online media).
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 5 Documents
 1 
Search results for , issue "Vol 28 No 2 (2025):" : 5 Documents clear
Effect of PGPB Secondary Metabolites in Inducing Systemic Resistance (ISR) and Enhancing Peroxidase Activity in Tomato Plants against Meloidogyne spp. Nematode Attack Arifal, Fahkrul; Yanti, Yulmira; Sulyanti, Eri; Harni, Rita
Akta Agrosia Vol 28 No 2 (2025):
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.28.2.67-72

Abstract

Meloidogyne spp. nematode is important pathogen of tomato plants that causes a characteristic symptom, namely root knot. One alternative to controlling Meloidogyne nematodes is by utilizing PGPB secondary metabolites. The objective of this research is to explore the potential of secondary metabolites produced by PGPB in inducing systemic resistance (ISR) and increasing peroxidase enzyme activity in tomato plants attacked by Meloidogyne spp. This study used a completely randomized design (CRD), consisting of 11 treatments, 3 replicates. The observation parameters included Induced Systemic Resistance (ISR) Potential Test and peroxidase activity (PO) analysis. The results showed that the secondary metabolites from the Bacillus mycoides (MRSNUMBE.2.2) treatment were the best treatment in the ISR observation, which was indicated by the lowest nematode penetration rate, which was 3.66 nematodes in plant root tissue. In the observation of peroxidase activity, secondary metabolites from Bacillus waihenstephanensis (RBTLL.3.2) showed the highest peroxidase enzyme activity, which was 0.0437 µg/ml on day 7 and 0.0500 µg/ml on day 14. Keywords: induce systemic resistance, Meloidogyne spp., peroxsidase, secondary metabolites    
The Effect of Combination of Nutrition on Growth and Yield of Water Spinach Plants in NFT Hydroponic System Pangaribuan, Darwin; Fortuna, Kirana Ceri; Ramadiana, Sri; Widyastuti, RA. Diana
Akta Agrosia Vol 28 No 2 (2025):
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.28.2.73-78

Abstract

A hydroponic system is a technique for growing plants without soil, utilizing water combined with nutrients as a replacement for soil.  The purpose of this research was to determine the most effective combination of treatments between AB – Mix with liquid organic fertilizer (LOF) shrimp waste extract, LOF chicken manure extract, and eco-enzyme solution in supporting the growth of water spinach plants in the NFT hydroponic system. This research applied a Randomized Block Design with four types of treatments: AB – Mix 100% as a control, AB – Mix 75% + 15% shrimp waste extract + 10% chicken manure extract + 0 ml/l eco enzyme solution, AB – Mix 75% + 15% shrimp waste extract + 10% chicken manure extract + 1 ml/l eco enzyme solution, AB – Mix 75% + 15% shrimp waste extract + 10% chicken manure extract + 2 ml/l eco enzyme solution.. The results showed that the combination of AB-Mix with shrimp waste extract, chicken manure extract, and eco-enzyme produced the best results for hydroponic water spinach plants. This study showed the potential of using organic waste as an alternative nutrient from the treatment of AB-Mix 75% + 15% shrimp waste extract + 10% chicken manure extract + 0 ml/l eco-enzyme solution, AB-Mix 75% + 15% shrimp waste extract + 10% chicken manure extract + 1 ml/l eco-enzyme solution, and AB-Mix 75% + 15% shrimp waste extract + 10% chicken manure extract + 2 ml/l eco-enzyme solution gave the best results for hydroponic water spinach plants. This study shows the potential for using organic waste as an alternative source of nutrients. Keywords: chicken manure, eco-enzyme, hydroponic NFT, shrimp waste, water spinach
Evaluation of Land Suitability in Other Use Areas for Local Avocado Production In Muntok Sub-District, West Bangka Regency Ningsih, Riski Meliya; Pradana, Adhitya Vishnu; Barokah, Abi; Muthi, M. Fiu
Akta Agrosia Vol 28 No 2 (2025):
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.28.2.59-66

Abstract

The limited availability of fertile land in Bangka Island, driven by the high rate of land conversion and the persistent impacts of mining activities, has become increasingly critical. This condition has intensified the urgency to utilize Other Use Areas (APL) for the development of high-economic-value commodities. This study aims to evaluate the potential and suitability level of APL in Muntok Sub-district, West Bangka Regency, as a cultivation site for local avocado (Persea americana). The method used was a descriptive survey with a spatial approach employing Geographic Information Systems and Land Suitability Evaluation (FAO Matching Method). Analysis was conducted on a total of 3,029 hectares of APL by measuring bio-physical soil parameters (pH, organic carbon, drainage) and climate data, which were then matched with optimal growth criteria for avocado. The land suitability evaluation results showed that the study area has no Very Suitable (S1) class. The land was dominated by Moderately Suitable (S2) class covering 66.55% and Marginally Suitable (S3) class covering 20.30%, while 13.15% was classified as Not Suitable (N). Although agroclimatic factors were within optimal limits (S1), edaphic factors were the most critical limiting factors. The main constraint was very low organic carbon content (average 1.18–1.71 g.kg⁻¹) and acidic soil reaction (pH 4.5–5.4), which collectively inhibit nutrient uptake by plants. It is concluded that the potential of APL in Muntok can be significantly improved from S2/S3 to an actual suitability class of S1. The implication of this study is a strategic recommendation for policymakers and farmers to prioritize specific interventions, namely liming to remediate acidity and intensive application of organic materials to enhance soil fertility, thereby supporting sustainable horticulture diversification programs, especially with avocado, in West Bangka. Keywords: acidity remediation, descriptive survey, edaphic factors, land conversion, land limitation
Fruit Fly (Bactrocera spp.) Attack on Tomato Plants (Lycopersicum esculentum Mill.) At Alahan Panjang Vegetable Production Center of Solok Regency, West Sumatera Putri, Zulya Eka; Busniah, Munzir; Syahrawati , My
Akta Agrosia Vol 28 No 2 (2025):
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.28.2.88-95

Abstract

Fruit fly (Bactrocera spp.) is one of the important pests that causes the decline in the quality and quantity of tomatoes in Alahan Panjang, Solok Regency. This study aims to determine the species, population, and rate of fruit fly attacks on tomato plantations in Alahan Panjang. The research uses a survey method and sample determination uses the purposive sampling method. The research locations are in Lembah Gumanti District, Danau District and Lembang Jaya District. The observation parameters are the planting conditions, species, population, and rate of fruit fly infestation. The results of the study revealed that three species of fruit flies attacked tomato plants, namely B. carambolae, B. dorsalis, and B. papayae. The highest imago population was found in Lembah Gumanti District (736 individuals/land), while the lowest number of fruit fly imago was found in Lembang Jaya District (45 individuals/land). The highest percentage of infested tomato plants occurred in Lembah Gumanti District at 72.5% while the lowest percentage of infested plants occurred in Lembang Jaya District at 42.5%. The highest percentage of infected fruits was in ripe fruits in Lembah Gumanti District at 23.07%, while the lowest percentage of infected fruits occurred in unripe fruits in Lembang Jaya District at 10.53%.
Evaluation of Yield and Competition Indices in Sweet Corn (Zea mays saccharata L.)-Soybean (Glycine max) Intercropping System Lestari, Datik; Nailil Maghfiroh, Canggih; Sari Mahanani, Retno; Sumarlina; Sofiani Napitupulu, Tia
Akta Agrosia Vol 28 No 2 (2025):
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.28.2.79-87

Abstract

Intercropping is a cultivation strategy that can enhance land use efficiency and crop productivity compared to monoculture. This study aimed to evaluate the advantages of sweet corn–soybean intercropping systems over monoculture through crop competition analysis. The experiment was conducted at the Innovation Farm of Politeknik Negeri Jember using two treatments, namely monoculture and intercropping, each with three replications. Observed parameters included sweet corn yield components (number of cobs, cob weight, diameter, and length) as well as the calculation of Land Equivalent Ratio (LER), Area Time Equivalent Ratio (ATER), aggressivity, Competitive Ratio (CR), and Actual Yield Loss (AYL). Sweet corn yield data were analyzed using a t-test to determine significant differences between treatments. The results showed that intercropping provided higher efficiency with LER of 1.32 and ATER of 1.25, indicating an increase in land efficiency by 32.3% and time efficiency by 24.6% compared to monoculture. Sweet corn was the dominant crop with aggressivity of 1.42, CR of 3.31, and positive AYL of 1.03, while soybean was suppressed with aggressivity of –1.42, CR of 0.30, and negative AYL of –0.39. The t-test indicated no significant differences in sweet corn yield between monoculture and intercropping (p > 0.05). Thus, the sweet corn–soybean intercropping system is proven to be more efficient and has the potential to be adopted as a sustainable cultivation strategy under limited land conditions.  

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