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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 137 Documents
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Growth Responses of Peppermint Plant (Mentha arvensis L.) to Several Sources of Natural Plant Growth Regulators Nugraha, Andronicus Christian; Sukarjo, Entang Inoriah; Supanjani; Widodo
Akta Agrosia Vol 28 No 1 (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.28.1.51-58

Abstract

Indonesia, endowed with diverse medicinal plants, is exploring the commercial cultivation of peppermint plants (Mentha arvensis L.) to meet increasing demand for peppermint oil. This study investigated the effects of various natural plant growth regulators (PGRs) on peppermint plant growth and yield. Conducted in Bengkulu City from December 2020 to March 2021, the study used a Completely Randomized Design with 9 treatments of natural plant growth regulators and 3 replications. Results indicated that natural PGRs, including extracts from mung bean sprout filtrate, corn, shallots, and young coconut water, influenced leaf and tiller growth but showed no significant effects on plant height, number of branch shoots, stem segments, stolon, roots, leaf size, or essential oil aroma concentration. The combination of mung bean sprout filtrate and shallot filtrate yielded the greatest number of leaves. The findings suggest that while natural PGRs can enhance specific growth parameters, their overall impact on peppermint plant development may be limited by optimal soil conditions and nutrient availability. Keywords: leaf growth, mung bean sprouts, natural PGRs, peppermint, shallot extracts  
Potential of Trichoderma asperellum in Suppressing the Growth of Several Fungal Pathogens in Rice In Vitro Arianti, Selvia; Nurbailis; Darnetty
Akta Agrosia Vol 28 No 1 (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.28.1.35-41

Abstract

Rice (Oryza sativa L.) is an important food crop with Helminthosporium oryzae B. de Haan, Curvularia sp., and Rhizoctonia solani as three major associated pathogenic fungi. In controlling these pathogens, the use of antagonistic fungus, such as Trichoderma asperellum, is still considered the most effective and environmentally friendly. The study aimed to determine the potential of T. asperellum in suppressing several pathogenic fungi that cause disease in rice plants in vitro. The study used a completely randomized design (CRD) with 4 treatments and 10 replicates. The treatments were several pathogens that cause disease in rice plants with antagonistic fungi T. asperellum to inhibit several pathogens in rice plants, namely R. solani, Curvularia sp., H. oryzae., and untreated control. Testing the antagonistic power of T. asperellum against several pathogenic fungi was carried out by double culture method and culture vapor method. Observations made included the percentage of inhibition, invasion rate, colony area, changes in morphological characters, the number of conidia and the number of germinated conidia. The results showed that T. asperellum has the potential to suppress the growth of several pathogenic fungi studied in vitro. In the double culture method, T. asperellum suppressed the growth of R. solani fungus with the highest inhibition percentage of 68.40%, whereas in the vapor culture method, T. asperellum suppressed the growth of Curvularia sp. fungus with the highest effectiveness of 62.04%. Keywords: biological control, Curvularia sp., Helminthosporium oryzae, Rhizoctonia solani  
The Effects of Land Uses on Soil Physical Health in Agricultural Land (Case Study: Kismantoro District, Central Java Province, Indonesia) Mujiyo; Sari, Sandrina; Ariyanto, Dwi Priyo; Cahyono , Ongko
Akta Agrosia Vol 28 No 1 (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.28.1.24-34

Abstract

Kismantoro district is a karst land with unique characteristics and its physical health is easily influenced by land use. The purpose of this study was to identify the physical health status of soil, and find the influence of land use and parameters that limit soil physical health, which eventually provide appropriate land management strategies and recommendations to improve soil health. The research was conducted using a descriptive explorative approach and a purposive sampling method on the 12 Land Map Units (LMU) with three replications. Data were analysed using Analysis of Variance and Pearson correlation. Results indicated that most soil physical health in agricultural land in Kismantoro District is healthy. The highest soil physical health status was found on plantation agricultural land, with the average of the soil physical health being high status of 63.22%, followed by moor agricultural land at 52.83% and rice fields at 48.2%. The determinant factors of soil physical health were soil porosity, bulk density, and soil texture. To enhance the physical health of agricultural soil in Kismantoro District, it is recommended to apply organic matter, adopt zero or no-tillage practices, and grow cover crops on agricultural land.  Keywords: determinant factor, soil compaction, soil texture, sustainable management  
Genotypic and Phenotypic Variability and Heritability of Generative Traits, Yield Components, and The Yield in 39 Cayenne Pepper (Capsicum annuum L.) Genotypes Almunawar, Said Agil; Herison, Catur; Handajaningsih, Merakati; Alnopri; Romeida, Atra; Rustikawati; Sukisno
Akta Agrosia Vol 28 No 1 (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.28.1.42-50

Abstract

Cayenne pepper is a horticultural crop with high economic value, and its productivity can be improved through plant breeding programs. Genotypic and phenotypic variability, and heritability are important parameters for such programs. This study aimed of obtaining information on genotypic and phenotypic variability as well as heritability of generative traits, yield components, and the yield in 39 cayenne pepper genotypes. The research was conducted from May to October 2024 at the Experimental Farm, the University of Bengkulu. A Randomized Complete Block Design (RCBD) was used, involving 39 genotypes planted in three replications, with 20 plants per replication. The results showed broad genotypic variability was found in days to anthesis, days to first harvest, number of fruits per plant, fruit diameter, fruit length, pedicel length, and average fruit weight. Broad phenotypic variability was observed in all traits. High heritability was found in days to anthesis, fruit diameter, fruit length, and average fruit weight. These findings are highly valuable for determining effective selection strategies in plant breeding and the development of superior cultivars. Keywords: breeding, chili pepper, diversity, genotypic variance, phenotypic variance.  
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

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

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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

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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

Page 14 of 14 | Total Record : 137

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