cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Merakati Handajaningsih
Contact Email
Merakati Handajaningsih
Phone
+62818871578
Journal Mail Official
aktaagrosia@unib.ac.id
Editorial Address
Dept of Crop Production Faculty of Agriculture, University of Bengkulu WR Supratman St. Kandang Limun, Bengkulu 38371
Location
Kota bengkulu,
Bengkulu
INDONESIA
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 25 No 2 (2022)" : 5 Documents clear
The Potential of Bacillus sp.’s Isolate of Coffee Beans as Plant Pest Control Candidates Christina Nugroho Ekowati; Maria Denada Siallagan; Sumardi Sumardi; Emantis Rosa
Akta Agrosia Vol 25 No 2 (2022)
Publisher : Faculty of Agriculture, The University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Long-term use of chemical pesticides in high doses might result in chemical residues. Therefore, eco-friendly plant pest control should be getting more attention. To do so, one might consider the utilization of microorganisms that have the enzymatic ability to destroy the pest's body structure. This study aimed to explore the isolates of Bacillus sp. from coffee beans as a plant pest control candidate. Bacillus could be considered due to its ability to produce protein crystals and extracellular enzymes. Three isolates are obtained from isolation from coffee beans: Bacillus sp. 1; Bacillus sp. 2; and Bacillus sp. 3. These isolates have the enzymatic character of protease, chitinase, and lipase. The results of the bioassay test on larvae of Plutella xylostella (Lepidoptera order) showed that these isolates were able to cause larvae death within 48 hours.  
PEMODELAN POLA PRODUKTIVITAS TANDAN BUAH SEGAR (TBS) BERDASARKAN APLIKASI BEBERAPA AGEN HAYATI TERHADAP HAMA DI PERKEBUNAN KELAPA SAWIT Salmiyati Salmiyati; Budi Kuncahyo
Akta Agrosia Vol 25 No 2 (2022)
Publisher : Faculty of Agriculture, The University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pests are controlled in oil palm plantations by using biological agents to achieve higher productivity of fresh fruit bunches (FFB) of oil palm (Elaeis guineensis Jacq.). This study aims to create a modeling pattern for oil palm FFB productivity based on application data of biological agents at several levels of planting age. The research was conducted in Pelalawan, Riau, namely on young plants, juvenile plants, mature plants and old plants on mineral soil. The data used are the application data of the biological agents Tyto alba, Antigonon leptosus and Turnera subulata. Data were analyzed using Cobb Douglas multiple linear regression and correlation analysis. The results of the regression analysis are used to build a model for predicting FFB productivity patterns using Stella Software. The results of the model regression analysis showed that the coefficient of determination was obtained at 0.265, meaning that together the variables Antigonon leptosus, Tyto alba and Turnera subulata affected FFB productivity by 26.5%. The results of the regression analysis showed that the effect of each Antigonon leptosus, Tyto alba, and Turnera subulata increased by 1%, so FFB productivity increased by 0.018, 0.024, and 0.028%, respectively. The modeling pattern for the development of biological agents shows that FFB productivity will increase and start to decrease at the ages of 14 - 30 years in young, juvenile, mature, and old plants. The total rate of increase from the application of biological agents is 0.047%.
Rice Seedling Resistance due to Seed Priming and Seeding Density under Submergence Stress Condition Firdaus Sulaiman; Rujito Agus Suwignyo; Mery Hasmeda; Andi Wijaya; Irmawati Irmawati
Akta Agrosia Vol 25 No 2 (2022)
Publisher : Faculty of Agriculture, The University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The study of rice seedling resistance due to seed priming and seeding density under submergence stress condition was carried out to evaluate the effect of seed priming and also to estimate proper seeding population density to improve rice seedlings vigor under submergence stress condition. The experiment was conducted in tidal freshwater swamp of Sako in Rambutan District, Banyuasin Regency (3.067° S, 104.8616° E). Randomized block design was used where the seeds were soaked into ZnSO4.7H2O solution as priming treatment, and then sown with three different seeding rates: 30, 40 and 50 kg ha-1. Three cultivars consisted of Inpara 3, Inpara 5 and Ciherang were tested. The observation was carried out until 4 weeks after sowing to measure the seedling height, shoot dry weight, carbohydrate content in stem, and leaf chlorophyll. Results showed that all treatments indicated insignificant effect to all parameters. However, the highest result from all parameters was obtained from priming treatment. The higher seeding density the lower dry weight, carbohydrate and chlorophyll content. All three tested cultivars, Inpara 3 gave the best performance.  
KAJIAN EFEK RESIDU AMELIORAN IN SITU BATUBARA BITUMINOUS DAN LAPISAN PENGOTORNYA TERHADAP SIFAT FISIKA-KIMIA TANAH REKLAMASI TAMBANG BATUBARA DAN HASIL KEDELAI Khairul Khairul; Ajidirman; Sunarti
Akta Agrosia Vol 25 No 2 (2022)
Publisher : Faculty of Agriculture, The University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Application of slow decomposed organic ameliorants is expected to have a long-term impact on improving soil Physico-chemical properties. The source of in situ organic carbon that is easy to obtain on coal mine reclamation land are the coal itself and its coal impurities (parting) ameliorants. They are slow to decompose, so the residue can last for a long time in the soil. This study aimed to examine the effect of first-year residue of both coal and parting as ameliorants on the improvement of the physical and chemical properties of coal mine reclaimed soil and soybean yields. A pot study was conducted using a randomized block design with 3 treatments. The treatments tested were residues from the first year of the administration of ameliorant in situ, namely: Control, Bituminous coal ameliorant residue, and parting. Both coal and parting were tested with 5 doses each consisting of 5, 10, 15, 20, or 25 tons ha-1. The results showed that the first-year residue of bituminous coal ameliorant and coal impurities significantly affected some of the chemical properties of coal mine reclaimed soil. Both types of ameliorant residues had a very significant effect on increasing C-organic, humic acid, and total N content. The highest increase in soil organic C was found in soil ameliorated by using bituminous coal residues at 25 tons ha-1, and those by using coal impurities at was 20 tons ha-1. However, treatments did not affect soybean growth and yield.    
The Ability of Compost Materials Containing Entomopathogen Metarhizium anisopliae (Metsch.) Sorokin to Suppress Oryctes rhinoceros L. Larvae Hafiz Fauzana; Eka Kortima; Nelvia nelvia; Rusli Rustam; Fifi Puspita
Akta Agrosia Vol 25 No 2 (2022)
Publisher : Faculty of Agriculture, The University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Oryctes rhinoceros is one of the main pests in oil palm plantations. Biological control using Metharizium anisopliae has great potential to control O. rhinoceros larvae which are usually found in organic matter. This study aims to obtain the best organic compost material for the development of M. anisopliae as biological control against O. rhinoceros larvae. This research was conducted with a completely randomized design (CRD) consisting of 6 treatments, each treatment was repeated 5 times to obtain 30 experimental units. Each unit contained 10 O. rhino larvae. The concentration of M. anisopliae was 50 g / L of distilled water. The treatments of organic media consisted of 6 setting media, as follows: Oil Palm Empty Fruit bunch (OPEFB),  rice husk, sawdust, ½ part  OPEFB + ½ sawdust, ½ part OPEFB + ½ part rice husk, and ½ part rice husk + ½ part sawdust. The observations included the time of initial death, time of death, daily mortality, total mortality, changes in behavior and larvae morphology. Chemical analysis of OPEFB, temperature, and humidity were recorded. The results showed that compost from sawdust media had the tendency as the best media for the development of Metarizhium anisopliae. It had ability to infect O. rhinoceros larvae which caused larvae infection 72.50%.  

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2022 2022


Reset
Filter By Issues
All Issue Vol 26 No 1 (2023) Vol 25 No 2 (2022) Vol 25, No 1 (2022) Vol 24, No 2 (2021) Vol 24, No 1 (2021) Vol 23, No 2 (2020) Vol 23, No 1 (2020) Vol 22, No 2 (2019) Vol 22, No 1 (2019) Vol 21, No 2 (2018) Vol 21, No 1 (2018) Vol 20, No 2 (2017) Vol 20, No 1 (2017) Vol 19, No 2 (2016) Vol 19 No 1 (2016) Vol 18, No 2 (2015) Vol 17, No 2 (2014) More Issue