Management of Powdery Mildew of Okra Caused by Erysipheci choracearum

Dahivelkar, Parag; Atre, G.E.; Gawande, P. V.; Mate, G. D.

doi:10.20546/ijcmas.2017.608.380

Cited by 5 publications

(6 citation statements)

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“…and viral diseases such as yellow vein mosaic, enation leaf curl are frequently encountered. Powdery mildew stands out as a particularly significant disease and its common occurrence leads to a substantial reduction in okra yield [2,3].…”

Section: Introductionmentioning

confidence: 99%

Effect of Environmental Factors in the Development of Powdery Mildew in Okra [Abelmoschus esculentus (L.) Moench]

Diwakar,

Kaushal,

Khare

et al. 2024

IJPSS

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In order to study the effect of environmental factors in the development of powdery mildew in okra [Abelmoschus esculentus (L.) Moench] an experiment was carried out at the College of Agriculture, IGKV, Raipur, Chhattisgarh during kharif (2019-20). The correlation analysis revealed that the age of the crop was significantly, positively correlated and T max, T min and morning RH were significantly, negatively correlated with the disease severity. In addition to this by linear regression analysis, it was observed that plant age (69%), maximum temperature (62%), minimum temperature (60%) and morning relative humidity (46%) contributed in percent disease severity. Based on the proportional measures of extent of infection at different times the apparent rate of infection was found maximum during 70-84 DAS. At this time when the disease progress the average maximum temperature was 29.3℃, minimum temperature 14.9℃, morning relative humidity 87.6% and evening relative humidity 38.33%.

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Section: Introductionmentioning

confidence: 99%

Effect of Environmental Factors in the Development of Powdery Mildew in Okra [Abelmoschus esculentus (L.) Moench]

Diwakar,

Kaushal,

Khare

et al. 2024

IJPSS

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“…Simultaneous occurrence of drought and pathogen stresses is considered one of the most important combinations affecting crops worldwide 11,12 . This was because, plants growing under stressful conditions such as drought may be weak in protecting themselves and pathogens can easily attack such plants and cause further damage to them.…”

Section: Introductionmentioning

confidence: 99%

Differential Biotic and Abiotic Induced Stress Levels Confer Varying Morphological Responses in Okra (Abelmoschus esculentus L. Moench) Cultivars

Amadu,

Appiah,

Ayeh

2023

Asian J. Biol. Sci

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Background and Objective: Extreme and prolonged water deficit together with the evolving nature of plant viruses has a negative impact on plant growth. This study was thus conducted to evaluate the morphological responses of okra cultivars subjected to drought and virus stress treatments. Materials and Methods: Three watering treatment blocks were set up in a split block design and plants under each block were arranged further in a Randomized Complete Block Design (RCBD). Means of plant growth measurements and yield parameters were compared using One-way Analysis of Variance (ANOVA) statistics using Minitab (version 17.0) statistical software and means of treatments were compared by Tukey mean comparison at a 5% probability level. Results: The lowest reduced plant height of 19.60±0.84 cm corresponded to Indiana plants grown under a combination of severe drought and virus treatment. The least number of leaves were reported in Indiana plants grown under a combination of severe drought and virus treatment (1.66±0.57). The highest and least stem diameter were recorded in Essoumtem control plants (9.10±0.17 mm) and Indiana plants grown under a combination of severe drought and virus treatment (2.96±0.15 mm), respectively (p = 0.00, F = 74.53). Conclusion: Results concluded that virus infection and drought stressed plants may result in impaired growth in okra cultivars used in this study.

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“…which is an obligate parasite belonging to the phylum Ascomycota (Vimala and Suriachandraselvan, 2009). Powdery mildew is a major disease affecting both cultivated and wild grapevine species worldwide, resulting in significant yield and economic losses (Gadoury et al, 2012;Dahivelkar et al, 2017). Disease severity varies from year to year, depending mostly on environmental conditions, the presence of inoculum (disease history), and the vulnerability of the vines.…”

Section: Introductionmentioning

confidence: 99%

“…Disease severity varies from year to year, depending mostly on environmental conditions, the presence of inoculum (disease history), and the vulnerability of the vines. As a result, the steps that need to be taken to prevent losses, may differ from season to season (Dahivelkar et al, 2017). The disease affects the crop in all seasons, resulting in lower crop yields up to 40 per cent incurring significant economic losses (Siddappa et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Exploring eco-sensitive strategies for effective powdery mildew management in grapevines

JENA,

RAJA,

RAMAMOORTHY

et al. 2023

JBC

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Grapevine powdery mildew is one of the most important plant diseases widely affecting crops in many countries. The main aim of the present study was to use Ampelomyces quisqualis isolates to suppress the powdery mildew of grapes under field conditions. The findings revealed a strong correlation between the mycoparasite, Ampelomyces quisqualis and the grape powdery mildew pathogens, suggesting its potential for effective control. The results revealed that a single spray of A. quisqualis @ 2.0 per cent (MDU1) succeeded by two sprays of Trichoderma asperellum @ 2.0 per cent (Tasp,7) were found to be effective against Erysiphe necator. In addition, liquid formulation of A. quisqualis isolate MDU1 (2% w/v) as a foliar spray at 2% containing 2 × 106 spores ml-1 the during initial occurrence of the disease up to three sprayings at 15 days interval was found to be best. Thus, a liquid formulation of A. quisqualis isolate MDU1 proved effective in managing grapes powdery mildew disease under field conditions. The rDNA ITS region of A. quisqualis isolates was analyzed at the molecular level, and the resulting sequences were subjected to GC-MS analysis. The secondary metabolite identification using GC-MS revealed the presence of antimicrobial compounds, including squalene with the highest peak of 4.643 percent, octadecanoic acid with 3.862 percent, tetradecanoic acid with 3.600 percent, and 9,12-octadecadienoic acid (Z,Z) with 1.451 percent. These bioactive compounds revealed by GC-MS analysis in crude extracts of A. quisqualis had a stronger antifungal activity against E. necator.

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Management of Powdery Mildew of Okra Caused by Erysipheci choracearum

Cited by 5 publications

References 1 publication

Effect of Environmental Factors in the Development of Powdery Mildew in Okra [Abelmoschus esculentus (L.) Moench]

Effect of Environmental Factors in the Development of Powdery Mildew in Okra [Abelmoschus esculentus (L.) Moench]

Differential Biotic and Abiotic Induced Stress Levels Confer Varying Morphological Responses in Okra (Abelmoschus esculentus L. Moench) Cultivars

Exploring eco-sensitive strategies for effective powdery mildew management in grapevines

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