[논문]Evaluation of Certain Plant Extracts and Antagonists Against Fusarium solani and Alternaria tenuissima, the Incitants of Root Rot and Die-Back Diseases of Mulberry

Seetha, Ramulu J.; Raja, Gopal Reddy C.; Ramanjaneyulu, R.

Evaluation of Certain Plant Extracts and Antagonists Against Fusarium solani and Alternaria tenuissima, the Incitants of Root Rot and Die-Back Diseases of Mulberry 원문보기

International journal of industrial entomology, v.20 no.1, 2010년, pp.1 - 5

Seetha, Ramulu J. (Andhra Pradesh State Sericulture Research and Development Institute) , Raja, Gopal Reddy C. (Department of Bio-technology, School of Herbal Studies and Naturo Sciences, Dravidian University) , Ramanjaneyulu, R. (Department of Microbiology, Sri Krishnadevaraya University)

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The studies have been conducted to control the soil borne fungal pathogens viz, Fusarium solani (Mart) Sacc. and Alternaria tenuissima the incitants of root rot and die-back diseases on mulberry stem cuttings planted in the mulberry nurseries and also in established mulberry gardens ten plant extracts with 10% concentration except Lantana camara (undiluted) were tested through poisoned food technique and four biofungicides were also screened by dual culture method under in vitro conditions. Plant extract of Prosopis juliflora showed the maximum inhibition on the mycelial growth (81.2% over A. tenuissima and 80.0% over F. solani) and followed by L. camara (66.7% over A. tenuissima and 68.9% over F. solani). Among the antagonists Pseudomonas fluorescens and Trichoderma viride showed maximum inhibition on the mycelial growth of both pathogenic fungi. The promising plant extracts (P. juliflora and L. camara) and antagonists (P. fluorescens and T. viride) were tested against both the pathogenic fungi under in vivo conditions along with the existing popular chemical Mancozeb. All the tested plant products and bio-fungicides showed inhibitory effect on both fungi. But the maximum survival percentage of mulberry cuttings was recorded in the treatment with T. viride (95% against F. solani and 90% against A. tenuisssima) followed by P. fluorescens (90% against both fungi) and T. harzianum (80% against F. solani and 85% against A. tenuisssima). Incase of the treatments with plant extracts and chemical fungicide the P. juliflora (60% against F. solani and 55% against A. tenuisssima) showed higher survival percentage and followed by L. camara (55% against F. solani and 50% against A. tenuisssima) and Mancozeb (55% against both fungi). In case of control only 10% of survival was recorded in F. solani inoculated cuttings and 15% survival in A. tenuissima inoculated cuttings.

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Ten plant extracts were tested against both the fungi at 10% concentration except that of L. camara which was used without dilution. For preparation of 10% plant extract, 10 ml of stock solution is mixed with 90 ml of PDA medium and sterilized.

성능/효과

All the treatments showed inhibitory effect on A. tenuissima under simulated conditions and showed maximum protection against the pathogen than the control. In the treatment with bio-fungicide the maximum survival percentage was recorded in T.
tenuissima under simulated conditions and showed maximum protection against the pathogen than the control. In the treatment with bio-fungicide the maximum survival percentage was recorded in T. viride (90%) and P. fluorescens (90%) followed by T. harzianum (85%). In the treatments with plant extracts P.
solani. In the treatment with bio-fungicide the maximum survival percentage was recorded in T. viride (95%) followed by P. fluorescens (90%) and T. harzianum (80%). Incase of the treatments with plant extracts, P.
In case of control only 10% of survivability was recorded. Percent improvement of survivability over control was recorded 85.0%, 70.0%, 80.0%, 45.0%, 50.0% and 45.0% in the treatments with T. viride, T. harzianum, P. fluorescens, L. camara, P. juliflora and Mancozeb respectively. The details were presented in Table 3.
tenuissima were presented in Table 3. Percent improvement of survivability over control was recorded higher with 75.0%, 70.0%, 75.0%, 35.0%, 40.0% and 40.0% in the treatments with T. viride, T. harzianum, P. fluorescens, L. camara, P. juliflora and Mancozeb respectively.

참고문헌 (23)

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Evaluation of Certain Plant Extracts and Antagonists Against Fusarium solani and Alternaria tenuissima, the Incitants of Root Rot and Die-Back Diseases of Mulberry 원문보기

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Evaluation of Certain Plant Extracts and Antagonists Against Fusarium solani and Alternaria tenuissima, the Incitants of Root Rot and Die-Back Diseases of Mulberry 원문보기

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