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Marine Fisheries : J. of Marine Fisheries Technology and Management     Open Access   (Followers: 3)
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Jurnal Fitopatologi Indonesia
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0215-7950 - ISSN (Online) 2339-2479
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  • Cover Jurnal Fitopatologi Vol. 17 No. 5, September 2021

    • Authors: Sri Hendrastuti Hidayat
      Abstract: This editorial contains the front cover, editorial page, and back cover of the Indonesian Journal of Phytopathology, Vol. 17 No. 5, September 2021
      PubDate: 2022-01-21
      Issue No: Vol. 17, No. 5 (2022)
       
  • Morphometric and Pathogenecity Variation of Peronosclerospora spp. The
           Causal Agent of Maize Downy Mildew in Java Island, Indonesia

    • Authors: Satriyo Restu Adhi, Fitri Widiantini, Endah Yulia
      Pages: 173 - 182
      Abstract: Morphometric and Pathogenecity Variation of Peronosclerospora spp. The Causal Agent of Maize Downy Mildew in Java Island, Indonesia Downy mildew disease in maize caused by Peronosclerospora spp. has been reported to cause yield loss in several production centers in Java.  This study aimed to determine the morphometric characteristics and pathogenicity of Peronosclerospora spp.. Ten strains of Peronosclerospora were collected from maize production center in Blitar (BLT), Kediri (KDR), Kediri 2 (KDR2), Klaten (KLT), Cianjur (CJR), Garut (GRT), Jatinangor Sumedang (JTN), Rancakalong Sumedang (RCG), Indramayu (IMY), and Sukabumi (SKB). Morphometric variation was determined using microscope by observing shape of conidium; measuring cell wall thickness, length of conidiophores, dimensions of conidia; and counting the number of branches. Differences in morphology and pathogenicity between strains was evidenced. Dendogram analysis based on morphometric characters differentiated strains of Peronosclerospora into 2 main clusters. One strain, KDR2 is in the same group and identical with reference strain P. philippinensis; while the others are in the same group and identical with reference strain P. maydis. Pathogenicity test showed that IMY strain caused the lowest disease incidence (8.33%) and KLT strain caused the highest disease incidence (47.92%).
      PubDate: 2022-01-17
      Issue No: Vol. 17, No. 5 (2022)
       
  • Wood Vinegar as Plant Growth and Defense Inducer of Banana Plants against
           Ralstonia syzygii subsp. celebesensis

    • Authors: Muhammad Evan Nurrahmawan, Giyanto, Abdjad Asih Nawangsih, Erina Sulistiani
      Pages: 183 - 194
      Abstract: Wood Vinegar as Plant Growth and Defense Inducer of Banana Plants against Ralstonia syzygii subsp. celebesensis Banana seedlings derived from tissue culture are known to be susceptible to stress at early growing stage in the field. Pre-conditioning of seedlings using priming agents, such as coconut shell wood vinegar was reported to enhance plant growth and resistance. This study aimed to obtain information on the effect of coconut shell wood vinegar on growth and defense-related enzymes activity of Cavendish banana plantlet in the root induction phase and suppression of R. syzygii subsp. celebesensis in vitro. Research was conducted involving evaluation of wood vinegar phytotoxicity, analysis of plantlet growth, analysis of peroxidase and polyphenol oxidase activities, isolation of R. syzygii subsp. celebsensis, and toxicity assay of wood vinegar against R. syzygii subsp. celebesensis in vitro. Application of wood vinegar at 1.5% concentraion was phytotoxic, indicated by symptom development including chlorosis, necrosis, mucus secretion and plantlet death. Lower concentration of wood vinegar, i.e. ≤ 1.0% was not phytotoxic; even the treatment of wood vinegar at 0.1% caused an optimum increase in plantlet growth. Application of wood vinegar also increased the activity of defense-related enzymes at 2, 4, and 6 days after planting (DAP) but decreased at 30 DAP. Furthermore, wood vinegar showed antibacterial properties through the formation of inhibition zones and it caused decreased in the value of R. syzygii subsp. celebesensis cell densities. This study shows the potential of priming techniques for controlling banana blood disease, especially for banana seedlings propagated through tissue culture.
      PubDate: 2022-01-17
      Issue No: Vol. 17, No. 5 (2022)
       
  • Seed Treatment with Pesticide, Bordeaux Mixture and Biological Agent for
           Ginger Rhizome-Borne Disease Suppression

    • Authors: Setyowati Retno Djiwanti, Sri Rahayuningsih
      Pages: 195 - 202
      Abstract: Seed Treatment with Pesticide, Bordeaux Mixture and Biological Agent for Ginger Rhizome-Borne Disease Suppression Root knot caused by nematodes and rhizome rot due to infection by various pathogens is commonly found in ginger rhizomes. A study was conducted to evaluate the effect of several seed treatments on suppression of rhizome damage caused by these diseases. The experiment was arranged using a randomized block design with 7 rhizome treatments, each repeated 4 times. Ginger rhizome were given treatment before planting, i.e. soaking in 1.5% pesticides (a mixture of streptomycin sulfate and benomyl), Bordeaux mixture (1% and 2%), 10% rhizobacteria (Bacillus pantotkenticus and Trichoderma lactae) for 24 hours; and coating with carbosulfan ST flour (500 g for 4 kg rhizomes) and non-pathogenic Fusarium (NP) talc formula (500 g for 4 kg rhizomes). Ginger rhizomes were than planted in sterile planting medium consisting of a mixture of 1% Bordeaux mixture and soil; and observed until the plants reach 5 months old. Soaking the rhizomes in a solution of pesticides and rhizobacterial formulas, as well as coating the rhizomes with carbosulfan ST flour and Fusarium NP formulas could suppress root knot and rhizome rot; Those seed treatments also enhanced seed viability and plant growth (plant fresh weight and or rhizome dry weight). With the exception of Bordeaux mixture, these four seed treatments can be further used in the production of qualified and healthy ginger rhizome seed.
      PubDate: 2022-01-21
      Issue No: Vol. 17, No. 5 (2022)
       
  • The Health of Soybean Seeds Produced by Farmer Group in Wonogiri

    • Authors: Ramadhani Yovita Hapsari Hapsari
      Pages: 203 - 209
      Abstract: The Health of Soybean Seeds Produced by Farmer Group in Wonogiri Seed-borne fungal infection is one of the constraints limiting soybean production. Study was conducted to evaluate the health of soybean seeds produced by farmers and become the main seed source for most farmers in Wonogiri Regency. The experiment was carried out following a completely randomized factorial design with two factors, i.e. the origin of the seeds (Genuk, Suru, and Sumberejo Villages) and seed treatment (with and without disinfectant). Seed health testing was conducted using modification of blotter test. Identification of seed-borne fungi was carried out based on morphological characters. The results showed that the seeds from Sumberejo Village had normal germination rates that met the requirements as a seed source. However, soybean seeds produced by the farmers in Wonogiri do not meet the requirements as healthy seeds. Seeds from Suru and Genuk Villages were infected and contaminated by Aspergillus niger and A. flavus with an average infection of 90%. These two fungi dominate the infection and contamination of soybean seeds. The use of disinfectants is able to suppress infection and contamination of Aspergillus spp.

      PubDate: 2022-01-21
      Issue No: Vol. 17, No. 5 (2022)
       
  • Antagonistic Activity of Endophytic Fungi from Dayak Onions’ Flower
           (Eleutherine bulbosa (Mill.) Urb.) Against Fusarium sp. Infecting Chili
           Plant

    • Authors: Noor Laili Aziza, Noorkomala Sari, Sofiya Irsalina
      Pages: 210 - 215
      Abstract: Antagonistic Activity of Endophytic Fungi from Dayak Onions’ Flower (Eleutherine bulbosa (Mill.) Urb.) Against Fusarium sp. Infecting Chili Plant Wilt disease caused by Fusarium spp. is an important problem in chili cultivation. Meanwhile, use of biological agents such as endophytic fungi from medicinal plants have the potential to control plant diseases. Dayak onions are medicinal plants that known to have antibacterial, anti-fungal, anti-inflammatory, and antioxidant properties. Therefore, a study was conducted to determine the antagonistic activity of endophytic fungi isolated from Dayak onion flowers against Fusarium spp. A total of seventeen isolates of endophytic fungi were obtained from the flower of Dayak onion flowers, namely EnA, EnB, EnC, EnD, EnE, EnF, EnG, EnH, EnI, EnJ, EnK, EnL, EnM, EnN, EnO, EnP, and EnQ. Five of the seventeen isolates, i.e. EnA, EnF, EnI, EnJ, and EnK were further examined in antagonistic test against Fusarium spp. using dual culture method. Inhibition of colony growth of Fusarium spp. caused by isolates EnA, EnF, EnI, EnJ, and EnK were 67.6%, 53.15%, 77.25%, 70.42% and 67.1%, respectively.

      PubDate: 2022-01-21
      Issue No: Vol. 17, No. 5 (2022)
       
 
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