Management of Brown Spot of Rice (Oryza sativa L.) Caused by  Bipolaris oryzae by Bio-Control Agents

Gupta, Vishal; Shamas, Naveed; Razdan, V.K.; Mahajan, Seethiya; Fatima, Kausar; Sharm, Satish; Rai, Puja

doi:10.20546/ijcmas.2018.704.393

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…In addition, [31] reported that propiconazole 25 EC @ 0.1% was highly effective against diseases such as sheath blight, sheath rot, brown spot, and glume discoloration. The same results have been studied by [32], they evaluated several fungicides to check their efficacy against the brown leaf spot of rice. Among all tested fungicides, propiconazole was found to be highly effective against the B. oyzae with maximum inhibition of 97% at 250ppm concentration.…”

Section: Resultsmentioning

confidence: 94%

Synthetic fungicides for controlling brown leaf spot of rice caused by Bipolaris oryzae

Shaheen

2023

ijbch

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Rice (Oryzae sativa L) is suffering from several biotic and abiotic factors. Among biotic factors, brown leaf spot of rice (BLS) is potentially devastating disease of rice causing the severe yield losses up to 100%. The current study was designed to evaluate most effective synthetic fungicides management strategy towards BLS disease. For this purpose, 12 fungicides were screened out under in vitro conditions and four most effective fungicides were further demonstrated against the targeted pathogen with three different concentrations (100, 150 and 150 ppm) by using poisoned food technique. The results revealed that propiconazole and thiophanate methyl showed the strong inhibitory effect against B. oryzae followed by contaf plus and bavistin respectively. The promising fungicides (propiconazole and thiophanate methyl) under lab conditions were further evaluated in vivo against BLS disease by using 3 types of applications i.e. Pre-inoculation, Post-inoculation and after symptoms appearance. Findings showed that, Post-inoculation was found most effective as compared to other applications, furthermore combination of propiconazole and thiophanate methyl showed significant reduction in disease incidence percent as compared to solo applications. The reduction in disease incidence percent in all application methods suggested that these synthetic fungicides could be used against BLS of rice.

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Section: Resultsmentioning

confidence: 94%

Synthetic fungicides for controlling brown leaf spot of rice caused by Bipolaris oryzae

Shaheen

2023

ijbch

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“…Interaction among availability of plant nutrient in the soil, climatic condition, presence of pathogen inoculums, and plant variety plays the deciding role in development of disease. Although biological and chemical control is available for the management of brown leaf spot (Gupta V et. al 2018), host plant resistance is most economical and environment friendly and it is desirable to have plant variety in hand having endurance to multiple biotic and abiotic stresses.…”

Section: Issn: 2319-7706 Volume 7 Number 12 (2018)mentioning

confidence: 99%

Salt Tolerant Paddy Varieties, Showing Resistance to Brown Spot during Nursery Stage

Chandra¹,

Tiwari²,

Singh³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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“…In a comparative study, Propiconazole was found quite effective as spray and soil drenching in the booting phase compared to Baviston and compost tea (Sultana et al, 2017). Propiconazole significantly reduces fungal infections on rice crop (Gupta et al, 2013). Hence, fungicides have adverse effects on physiological functions of plants and human health via food chain (Shahid and Khan, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of fungicide application timings and genetic resistance of rice varieties on the reduction of percent severity of narrow brown leaf spot disease

Iqbal

2023

PAKJAS

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Narrow brown leaf spot disease of rice caused by fungus Cercospora oryzae Miyake emerged as potential threat to rice crop in previous few years worldwide and can cause more than 40% yield loss. The disease symptoms were noted on various commercially important rice varieties in the rice growing districts of Punjab province of Pakistan. Hence, the studies were planned to assess the effects of Propiconazole fungicide application timings and different rice varieties on the severity of narrow brown leaf spot (NBLS) disease of rice to develop an accurate management strategy for the disease. The Propiconazole fungicide was tested at three various growth phases (early booting, late booting, and soft dough) of four rice varieties against the percent severity of the NBLS disease The experiments were designed under strip-plot (crisscross) design with four replications at research area of Plant Pathology Department, University of Agriculture Faisalabad. Analysis of variance has demonstrated that the main and interactive effects of fungicide applications and rice varieties were found significant. The main effects of years were found non-significant but their interactions with fungicide application timings and rice varieties were significant. Fungicide applications at soft dough and late booting phases of rice variety B-515 were found least effective to reduce the disease severity, respectively. Fungicide application at early booting of rice variety PK-1121 was found most effective by reducing the maximum percent diseases severity (47.25%) compared to control. It is concluded that, to minimize hazardous effects of chemicals on the environment by practicing multiple sprays at inappropriate growth phases of rice crop, fungicides must be applied during the early and late booting phases of rice varieties on mildly resistance, susceptible and highly susceptible rice varieties to reduce NBLS disease severity and to enhance the rice production and quality

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Management of Brown Spot of Rice (Oryza sativa L.) Caused by Bipolaris oryzae by Bio-Control Agents

Cited by 8 publications

References 8 publications

Synthetic fungicides for controlling brown leaf spot of rice caused by Bipolaris oryzae

Synthetic fungicides for controlling brown leaf spot of rice caused by Bipolaris oryzae

Salt Tolerant Paddy Varieties, Showing Resistance to Brown Spot during Nursery Stage

Effects of fungicide application timings and genetic resistance of rice varieties on the reduction of percent severity of narrow brown leaf spot disease

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