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INDONESIA
Journal of Tropical Plant Protection
Published by Universitas Brawijaya
ISSN : -     EISSN : 23557974     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
We cordially invite you to submit a manuscript to Journal of Tropical Plant Protection (JTPP), an upcoming regular peer-reviewed open access on-line scientific journal that covers fundamental and applied aspects of plant pathology and entomology in agriculture and natural resources. The journal will consider submissions from all over the world, on research works not being published or submitted for publication as full paper, review article and research note elsewhere.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol. 3 No. 1 (2022)" : 5 Documents clear
Potential of Indigenous Yeast as a Paraquat Biodegradation Agent in Sumberbrantas, Batu City, Indonesia Bosha, Mohammed; Abadi, Abdul Latief; Aini, Luqman Qurata
Journal of Tropical Plant Protection Vol. 3 No. 1 (2022)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2022.003.1.1

Abstract

Herbicides are a substance or chemical compound used to inhibit growth or kill plants. Herbicides are toxic to weeds or pests as well as cultivated plants. The impact of using the herbicide paraquat causes some microbes to become more resistant and has the potential to be used as a paraquat biodegradation agent. Indigenous yeast is one of the microbes that can be used as a biodegradation agent because it is resistant to the environment. For this reason, This research aimed to investigate the indigenous yeast isolated from the potato field in Sumberbrantas village, Batu City as a bioremediation agent for paraquat herbicide residues.The sampling was carried out in the potato field of Sumberbrantas, Batu City, which in routine maintenance uses a herbicide with active paraquat (1,1 dimethyl -4, 4-bipyridinium dichloride).The isolation results obtained 6 isolates of indigenous yeast which had the potential as biodegradation agents for paraquat. Treatment of yeast isolates MB 1, MB 3, MB 4, MB 6, MB 7, MB 8 at concentrations of 250, 500, 1,000 and 2,000 paraquat were able to survive with a growth percentage of 75-100%. At a concentration of 5,000 Isolated yeast decreased with a growth percentage of 50-75% and MB 1 isolate with 10,000 ppm concentration still survive with a growth percentage of 1-25%. The highest biodegradability ability of yeast was in MB 1. The identification of MB 1 isolates based on molecular characters have similarities in the basic structure of 98.89% with Geotrichum silvicola UFMG 354-228S isolates with accession number NG_0606221.1.
Abundance of Collembola on Integrated Pest Management and Conventional Sugarcane Fields Putra, Satrya Adhimas Eka; Rahardjo, Bambang Tri
Journal of Tropical Plant Protection Vol. 3 No. 1 (2022)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2022.003.1.2

Abstract

This research aimed to determine effect of applying sugarcane litter on the abundance of Collembola species in sugarcane fields using the IPM and conventional systems. This research was conducted from August to January 2021 in sugarcane plantation at sweetener and fiber crop research center (BALITTAS), Karangploso, Malang. Data were analyzed using the formula of diversity index, evenness and dominance and further analyzed with the T test. The results showed there were 5 families of Collembola found in IPM field namely Brachystomellidae, Neanuridae, Sminthuridae, Isotomidae and Entomobrydae. On conventional field, there was no family Neanuridae. Application of litter and intercropping on IPM field increased population of Collembola, while in conventional field, the Collembola population was lower. Application of sugarcane litter increased the levels of organic matter and population Collembola in IPM sugarcane field
Effectiveness of Mancozeb and Benalaxyl Against Purple Blotch Disease Caused by Alternaria porri Howard (Dothideomycetes: Pleosporaceae) In Shallot (Allium ascalonicum L.) Liana Juvita; Anton Muhibuddin
Journal of Tropical Plant Protection Vol. 3 No. 1 (2022)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2022.003.1.5

Abstract

The common control of purple blotch disease of shallot cause by Alternaria porri is using fungicide. Application of mancozeb and benalaxyl was reported effectively suppress the intensity of purple blotch disease. The aim of this study was to evaluate the effective doses of mancozeb and benalaxyl fungicide against purple blotch disease of shallot in vivo and in vitro. A Randomize Block Design (RBD) with 5 treatments and 5 replicates were used in in vivo experiments and A Randomize Complete Design (RCD) with 6 treatments and 3 replicates were used in in vitro experiments. Disease intensity, fungicide efficacy rate (ER), and production were evaluated in vivo experiment. The growth of A. porri colony, fungicide relative inhibitions rate, compounds fungicide activity character, the biomass of mycelium on potato dextrose agar (PDA) and potato dextrose broth (PDB) were evaluated during in vitro experiment. The result showed that the highest of mixtured fungicide efficacy (90.15%) was found on the highest treatments (2.0 g/l) of fungicides application. It was also found that all fungicides suppressed growth of colony and biomass of A. porri mycelium on PDA+PDB media. The lowest growth of colony, biomass of  A. porri mycelium was found on PDA+PDB media and the highest relative inhibition rate was showed on mixtured of mancozeb+benalaxyl treatment. The fungicide activity character which evaluated from co-toxicity value, indicated that there was a sinergistic between mancozeb and benalaxyl (NK ≥ 1) to inhibit growth of A. porri.
Evaluation of Five Shallot (Allium Cepa L.) Varieties For Resistance to Shallot Yellow Stripe Virus (SYSV) Zulverdi, Yudhika Ankenkuala Ramadhana; Martosudiro, Mintarto; Choliq, Fery Abdul
Journal of Tropical Plant Protection Vol. 3 No. 1 (2022)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2022.003.1.3

Abstract

Shallot Yellow Stripe Virus (SYSV) is one of the economically important viruses of shallot. The incidence of SYSV infection can reach 66%-100%. The high level of SYSV infection on shallot is also due to the lack of resistance varieties to SYSV. This study aimed to determine the resistance of five varieties of shallot and the effect of SYSV infection on shallot production. The study used a completely randomized experimental design (CRD) using five shallot varieties as the treatment with four replication for each treatment. The shallot varieties were Bauji, Thailand, Bima Brebes, Tuk tuk (V4), Trisula (V5), and control. Each experimental unit consisted of 10 plants. The evaluation results showed that the Tuk-tuk variety was categorized as resistant, the Trisula variety as tolerant, and the Bauji, Thailand, and Bima Brebes varieties were categorized as susceptible. The shallot growth and production indicate that SYSV infection causes interference in the plant development process.
Utilization of Rhizosphere Antagonistic Microorganisms to Suppress The Damping Off Disease Caused by Sclerotium rolfsii Sacc. on Soybean Ika Agustin Rusdiana; Antok Wahyu Sektiono; Ika Rochdjatun Sastrahidayat
Journal of Tropical Plant Protection Vol. 3 No. 1 (2022)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2022.003.1.4

Abstract

Damping off on soybean is caused by Sclerotium rolfsii Sacc. It is a disease that can reduce production of soybean because and even lead to crop failure. The aims of this research are to obtain antagonist microorganisms in the rhizosphere of soybean to suppress damping off disease and determine the mechanism and than the effect of antagonist isolates on the incidence damping off disease of in vivo. The results of in vitro research obtained 13 isolates. However, only 5 isolates showed antagonism activity consisting of 4 bacterial isolates with antibiosis mechanism and 1 fungal isolate with mycoparasite mechanism against S. rolfsii. The results of in vivo research indicated that antagonist isolates could suppress damping off disease. The highest percentage of damping off disease incidence was observed in the control (80.71%) and the lowest percentage of the Trichoderma sp. (24.76%).

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