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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 6 Documents
 1 
Search results for , issue "Vol 25 No 1 (2022)" : 6 Documents clear
Xylem Limited Bacteria (XLB) Clove Disease Control Technology Through Utilization of Endophytic Bacteria Chrisnawati, Chrisnawati; Nasrun, Nasrun; Yulfidesi, Yulfidesi; Suryani, Suryani; Kasmawati, Kasmawati
Akta Agrosia Vol 25 No 1 (2022)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Xylem Limited Bacterium  (XLB) disease  (Ralstonia syzygii) is  the most seriuos disease on clove plant. Biological control using Endophytic Bacteria (Bacillus sp. Bc25 and Fluorescentpseudomonad Pf22) is expected to control clove XLB disease.The  research  aim to get  Bacillus sp. Bc25 and   Fluorescent pseudomonad Pf22product are effective to control XLB disease on clove plant.The study of Bacillus sp. Bc25 and Fluorescent pseudomonad Pf22 was done in watering  on clove plant  field were infected by XLB disease in Solok West Sumatera on January to December 2017.The study used a randomized block design (RBD) with four replications. The parameters observed were the disease attack level and plant growth.The study results showed thatBacillus sp.Bc25  andFluorescentpseudomonadPf 22 can control  XLB  disease and increase clove growth.Bacillus sp. Bc25 and Fluorescentpseudomonad Pf22 combinationdemonstrate XLB   disease control capabilities and promote the best clove plants  growthby intensity suppressing of XLB  disease from 86.80% to 20.59% and increasing the clove plants growth from the stem circle 20.00 cm to 46.00 cm.Combination product of biological agents Bacillus sp. Bc25 and FluorescentpseudomonadPf22 can be developed to control XLB  diseases and increase clove plant growth.Keywords : Clove, Xylem Limited Bacteria Disease (Ralstonia syzygii),        Endophytic Bacteria (Bacillus sp. Bc25 and Fluorescent pseudomonad Pf22.   
Amelioration of Salinity Stressed Soil Using Natural Zeolite for Improving Soil Properties and Chinese Cabbage Agronomic Performances Romadhan, Tantrie D; Marwanto, Marwanto; Murcitro, Bambang G; Handajaningsih, Merakati
Akta Agrosia Vol 25 No 1 (2022)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Salinity stress is the major abiotic stress for crop production. The purpose of this study was to evaluate the effectiveness of zeolite on improving soil properties, the growth, and yield of Chinese cabbage. This pot experiment was conducted from September to November 2020 at the Research and Teaching Field of the Faculty of Agriculture, consisted of 6 treatment levels, i.e. (1) control, (2) soil + 6.9 g NaCl /10 kg soil, (3) soil + 6.9 g Na2SO4 /10 kg soil, (4) soil + 3.2 g zeolite /10 kg soil, (5) soil + 6.9 g NaCl /10 kg soil + 3.2 g zeolite /10 kg soil, and (6) soil + 6.9 g Na2SO4 /10 kg soil + 3.2 g zeolite /10 kg of soil, and arranged in a completely randomized design with 3 replications. The application of zeolite decreased the EC of salinized soil and increased the soil CEC. NaCl salinity stress reduced plant height (23%), number of leaves (22%), fresh weight of roots (165%), dry weight of roots (170%), stalk length (32%), and plant dry weight (131%), while Na2SO4 salinity stress only reduced the number of leaves (23%). The addition of zeolite to salinized NaCl soil increased stalk length (39%), plant fresh weight (172%), leaf fresh weight (174%), plant dry weight (133%), and leaf dry weight (23%), while to salinized Na2SO4 soil only increased plant dry weight (90%) and leaf dry weight (177%). The overall results show that the addition of zeolite can effectively ameliorate salinity stress due to NaCl.
Pathogenicity of Indigenous Entomopathogen Liquid Formulation to Paddy Bugs Nymphs (Leptocorisa acuta Thunberg) Mulyani, Rahmawati Budi; Melhanah, Melhanah; Advianto, Petrayadi; Djaya, Adrianson A
Akta Agrosia Vol 25 No 1 (2022)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

The purpose of this study was to determine the effectiveness of bio insecticide liquid formulations made from indigenous entomopathogens against paddy bugs nymphs. The study used a non-factorial Complete Randomized Design with 9 treatments and 1 control with five replications. The treatments studied consisted of E0: Control, E1: Beauveria sp Pky isolate + coconut water (CW), E2: Metarhizium sp isolate Jjt + AK, E3: Beauveria sp isolate Jts + CW, E4: Metarhizium sp isolate Lcc + CW, E5: Beauveria sp Pky isolate + shrimp shell extract (SSE), E6: Metarhizium sp isolate Jjt + SSE, E7: Beauveria sp isolate Jts + SSE, E8: Metarhizium sp isolate Lcc + SSE, E9: Synthetic insecticide b a Carbamate (Dharmabas 500 EC 2 ml L-1). The result showed that liquid bioinsecticide formulations were effective against mortality, infected nymphs and nymph death time. All entomopathogenic fungi isolates were able to cause infections in paddy bugs nymphs of 68% - 84%. Beauveria sp Pky isolate and Metarhizium sp isolate Jjt caused nymph mortality of 72% - 84% and the effectivity did not differ from insecticide b.a. Carbamate. Conidia viability of all entomopathogenic isolates in liquid media within 24 hours reached more than 80%. The fastest time to death of paddy bugs nymph occurred at 5.44 days ( Metarhizium sp. isolate) and 5.92 days (Beauveria sp. isolate) in coconut water media. Metarhizium sp. and Beauveria sp. in the medium of coconut water or shrimp shell extract has a very high potential to be developed as a bio insecticide, but it still needs to be further tested for its effectiveness in field conditions.Keywords: indigenous entomopathogen, coconut water, shrimp shell extract, paddy bugs nymph
Vegetative Growth Response of Soybean (Glycine max L. Merril) After Applicated Several Plant Growth Regulators (PGRs) Mangais, Rowland; Rampe, Henny L.; Siahaan, Parluhutan
Akta Agrosia Vol 25 No 1 (2022)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Vegetative growth of plants can be influenced by internal factors including hormones (Plant Growth Regulators). The purpose of the study is to determine the growth response of soybean ( Glycine max L.Merril) after application of some plant growth regulators (PGRs). The research method used was Completely Randomized Design (CRD). There were four levels of extract concentration that were applied namely P0: Control, P1: onion extract, P2  bamboo shoot extract, and P3:  banana weevil extract. Data of the growt parameters were analyzed with ANOVA (Analysis of Variance) and continued with LSD 0.05 test. Results of the study showed that the application of PGRs from extracts of onion , bamboo shoots and banana weevil give the  increase of growth in height of plants  in 15 days after planting, fresh  weight, dry wight and root volume  of soybean (G. max). Application of PGRs couldn’t give any effect in high, number of leaves and ratio of canopy roots 27 days after planting.Keywords : Glycine max L. Merril , Vegetative growth, and Plant Growth  Regulators (PGRs
The Effect of Volume and Inoculation Method on the Development of Bacterial Panicle Blight Disease in Rice Plant Kusdiana, Alchemi Putri Juliantika; Hidayat, Joni; Zulaiha, Siti; Wahyudin, Denih
Akta Agrosia Vol 25 No 1 (2022)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.25.1.17-23

Abstract

Bacterial panicle blight in rice plants caused by Burkholderia glumae. These bacteria interfere with the grain filling process so that the grain is not filled and can cause yield losses of up to 75% on pathogenic infested land. This study was conducted to determine the effect of B. glumaesuspension volume and inoculation method on the development of bacterial panicle blight. The research was conducted on vegetative and generative rice plants using a factorial completely randomized design with the volume of bacterial suspension as the first factor and the inoculation method as the second factor. The results showed that the higher the volume of the B. glumaesuspension inoculated, the higher the severity of bacterial panicle blight in rice plants. Both the inoculation and injection methods can cause the same disease severity. Besides, the severity of bacterial panicle blight in the generative phase is more severe than in the vegetative phase
Potential of some Rhizobacteria Isolates Antagonists in Various Formulation to Control Sheat Root Disease (Sarocladium oryzae) on Rice Plants Majid, Abdul; Dewi, Keke Yunadia Kumala
Akta Agrosia Vol 25 No 1 (2022)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

The reserach aims to determine the potential of antagonistic rhizobacteria and is appropriate formulations used to control sheat root disease (Sarocladium oryzae). This research was carried out in July to December 2019 in the Plant and Disease Laboratory and the Greean House Faculty of Agriculture Jember University. The experiment was conducted using a completely slot deposit 5000 randomized design (CRD) 2 factors, namely isolates and formulation. Isolates factors have 4 factors levels; control, Bacillus sp. isolate, Pseudomonas fluorescens isolate, and Bacillus sp. + Pseudomonas fluorescens isolate. The formulation factors has 4 factors levels; glucose 10% + potato water 70% + bacterial starter 20%, Fructose 20% + coconut water 60% + bacteria; starter 20%, glucose 10% + CMC 2% + monmorilonite 68% + bacterial starter 20%, fructose 20% + CMC 2% + kaolin 58% + bacterial starter 20%. The result showed that the treatment of Bacillus sp. with formulation glucose 10% + CMC 2% + monmorilonite 68% + bacterial starter 20%, showed the best result, with a control effectiveness of 78.31%. Key word; Formulation, Rhizobacteria antagonist, Sarocladium oryzae

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