Effect of Different Media and pH on Mycelial Growth of Sclerotium oryzae Causing Sheath Rot of Rice

Ahmad, Md Iqbal; Biswas, Avijit Kumar; Sultana, Mst Sabiha; Sarker, Bidhan Chandro; Mondal, Chhoa

doi:10.3329/saja.v7i1-2.56753

Cited by 2 publications

(5 citation statements)

References 7 publications

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“…In alkaline conditions, nutrient imbalance occurs in the soil, which may lead to the unavailability of essential nutrients and make soil-borne pathogens starve [64]. This nutrient imbalance also affects the diversity and abundance of microorganisms, including fungi, thus impacting their growth and survival [65]. In addition, high EC also leads to the accumulation of toxic ions such as chloride and sodium, which may further inhibit the growth and survival of soil-borne pathogens by creating undue osmotic stress [65].…”

Section: Discussionmentioning

confidence: 99%

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Native Bioagents Influence the Soil Properties-Correlation of the Effect of Native Trichoderma, Pseudomonas and Bacillus on Soil Properties and the Resulting Reduction in Stem Rot Disease of Rice

V¹,

Maruthi²,

Gobinath³

et al. 2023

Preprint

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Soil is a crucial component for plant growth, as it provides water, nutrients, and mechanical support. Various factors, such as crop cultivation, microflora, nutrient addition, and water availability, significantly affect soil properties. Maintaining soil health is important, and one approach is the introduction of native organisms with multifaceted activities. In this study, the effects of four native microbes (Trichoderma asperellum strain TAIK 1, Bacillus cabrialesii strain BIK3, Pseudomonas putida strain PIK1, and Pseudomonas otitidis strain POPS1) and their consortia on soil health, plant growth, and the incidence of stem rot disease caused by Sclerotium oryzae in rice are evaluated. Upon bioagent treatment of soil through seed treatment or soil application, variations in chemical properties of the soil were observed, viz., pH, Electrical Conductivity (EC), Organic Carbon (OC), available Soil Nitrogen (SN), Soil Phosphorus (SP), Soil Potassium (SK), and soil enzymes (urease, acid and alkaline phosphatase, dehydrogenase), compared to untreated soils. The treated seeds with the consortia of four native bioagents resulted in a significant increase in plant height (39.16%), number of panicles (30.29%), and average grain yield (41.36%) over control plants. Under controlled conditions, the bioagents-treated plants showed a 69.37% reduction in stem rot disease. The findings of this study indicate a positive correlation between soil properties and plant growth as well as a highly negative association with stem rot disease severity. The results suggest that using native bioagents as a management strategy can control stem rot disease and enhance crop productivity while reducing reliance on chemical interventions. These findings provide valuable insights for the development of sustainable agricultural practices that promote soil health, plant growth, and disease management.

show abstract

Section: Discussionmentioning

confidence: 99%

“…These compounds play a crucial role in disrupting the signalling pathways for sclerotial body germination. As a result, the growth and proliferation of pathogens are effectively inhibited [65].…”

Section: Discussionmentioning

confidence: 99%

Native Bioagents Influence the Soil Properties-Correlation of the Effect of Native Trichoderma, Pseudomonas and Bacillus on Soil Properties and the Resulting Reduction in Stem Rot Disease of Rice

V¹,

Maruthi²,

Gobinath³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Under alkaline conditions, the nutrient imbalance affects soil-borne pathogens, which may lead to the unavailability of essential nutrients and make soil-borne pathogens starve [70]. This nutrient imbalance also affects the diversity and abundance of microorganisms, including fungi, thus impacting their growth and survival [71]. In addition, high EC also leads to the accumulation of toxic ions, such as chloride and sodium, which may further inhibit the growth and survival of soil-borne pathogens by creating undue osmotic stress [71].…”

Section: Discussionmentioning

confidence: 99%

“…This nutrient imbalance also affects the diversity and abundance of microorganisms, including fungi, thus impacting their growth and survival [71]. In addition, high EC also leads to the accumulation of toxic ions, such as chloride and sodium, which may further inhibit the growth and survival of soil-borne pathogens by creating undue osmotic stress [71].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Correlation of the Effect of Native Bioagents on Soil Properties and Their Influence on Stem Rot Disease of Rice

Vanama,

Pesari,

Rajendran

et al. 2023

Sustainability

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Soil is a crucial component for plant growth, as it provides water, nutrients, and mechanical support. Various factors, such as crop cultivation, microflora, nutrient addition, and water availability, significantly affect soil properties. Maintaining soil health is important, and one approach is the introduction of native organisms with multifaceted activities. The study evaluates the effects of introducing these microbes (Trichoderma asperellum strain TAIK1, Bacillus cabrialesii strain BIK3, Pseudomonas putida strain PIK1, and Pseudomonas otitidis strain POPS1) and their consortium, a combination of four bioagents, on soil health, plant growth, and the incidence of stem rot disease caused by Sclerotium oryzae in rice. Upon treatment of soil with the consortium of the four native bioagents mentioned above through seed treatment or soil application, variations/increases in the chemical properties of the soil were observed, viz., pH (8.08 to 8.28), electrical conductivity (EC) (0.72 to 0.75 d S m−1), organic carbon (OC) (0.57 to 0.68 %), available soil nitrogen (SN) (155 to 315 kg/ha), soil phosphorus (SP) (7.87 to 24.91 kg/ha), soil potassium (SK) (121.29 to 249.42 kg/ha), and soil enzymes (urease (0.73 to 7.33 µg urea hydrolyzed g−1 soil h−1), acid and alkaline phosphatase (0.09 to 1.39 and 0.90 to 1.78 µg of p-nitrophenol released g−1 soil h−1), and dehydrogenase (0.14 to 16.44 mg triphenyl formazan (TPF) produced g−1 soil h−1)), compared to untreated soil. Treatment of seeds with the consortium of four native bioagents resulted in a significant increase in plant height (39.16%), the number of panicles (30.29%), and average grain yield (41.36%) over control plants. Under controlled conditions, the bioagent-treated plants showed a 69.37% reduction in stem rot disease. The findings of this study indicate a positive correlation between soil properties (pH, EC, OC, SN, SP, SK, and soil enzymes) and plant growth (shoot and root length, fresh and dry weight) as well as a highly negative association of soil properties with stem rot disease severity. The results suggest that using native bioagents as a management strategy can control stem rot disease and enhance crop productivity, while reducing reliance on chemical management. These findings provide valuable insights into the development of sustainable agricultural practices that maximize productivity by minimizing negative environmental impacts, which promotes soil health, plant growth, and disease management.

show abstract

Effect of Different Media and pH on Mycelial Growth of Sclerotium oryzae Causing Sheath Rot of Rice

Cited by 2 publications

References 7 publications

Native Bioagents Influence the Soil Properties-Correlation of the Effect of Native <em>Trichoderma</em>, <em>Pseudomonas</em> and <em>Bacillus</em> on Soil Properties and the Resulting Reduction in Stem Rot Disease of Rice

Native Bioagents Influence the Soil Properties-Correlation of the Effect of Native <em>Trichoderma</em>, <em>Pseudomonas</em> and <em>Bacillus</em> on Soil Properties and the Resulting Reduction in Stem Rot Disease of Rice

Correlation of the Effect of Native Bioagents on Soil Properties and Their Influence on Stem Rot Disease of Rice

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