Fungicide Sensitivity of<i>Sphaerotheca fuliginea</i>Populations in the United States

McGrath, M. T.; Staniszewska, H.; Shishkoff, Nina; Casella, G.

doi:10.1094/pd-80-0697

Cited by 43 publications

(19 citation statements)

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“…There are now many instances of resistance among all pest categories. For example, Podosphaera xanthii, the fungus causing cucurbit powdery mildew quickly developed resistance to demethylation inhibitor fungicides (McGrath et al 1996), strobilurin (McGrath and Shishkoff 2003), and more recently to cyflufenamid (Pirondi et al 2014). This issue is particularly acute for weed management because very few new herbicidal modes of action remain available (Heap 2014;Duke 2012).…”

Section: Principle 7-anti-resistance Strategiesmentioning

confidence: 99%

Eight principles of integrated pest management

Barzman¹,

Bàrberi

Birch

et al. 2015

Agron. Sustain. Dev.

712

404

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The use of pesticides made it possible to increase yields, simplify cropping systems, and forego more complicated crop protection strategies. Over-reliance on chemical control, however, is associated with contamination of ecosystems and undesirable health effects. The future of crop production is now also threatened by emergence of pest resistance and declining availability of active substances. There is therefore a need to design cropping systems less dependent on synthetic pesticides. Consequently, the European Union requires the application of eight principles (P) of Integrated Pest Management that fit within sustainable farm management. Here, we propose to farmers, advisors, and researchers a dynamic and flexible approach that accounts for the diversity of farming situations and the complexities of agroecosystems and that can improve the resilience of cropping systems and our capacity to adapt crop protection to local realities. For each principle (P), we suggest that (P1) the design of inherently robust cropping systems using a combination of agronomic levers is key to prevention. (P2) Local availability of monitoring, warning, and forecasting systems is a reality to contend with. (P3) The decision-making process can integrate cropping system factors to develop longer-term strategies. Agron. Sustain. Dev. (2015) 35:1199-1215 DOI 10.1007 protection solutions. And (P8) integration of multi-season effects and trade-offs in evaluation criteria will help develop sustainable solutions.

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Section: Principle 7-anti-resistance Strategiesmentioning

confidence: 99%

Eight principles of integrated pest management

Barzman¹,

Bàrberi

Birch

et al. 2015

Agron. Sustain. Dev.

712

404

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“…According to McGrath et al (1996), the powdery mildew disease severity was estimated by counting visible sporulating mildew colonies on both adaxial and abaxial surfaces per leaf. Five old leaves per plant were examined for five plants in each plot (i.e.…”

Section: Disease Assessmentsmentioning

confidence: 99%

Control of powdery mildew in okra using cultural filtrates of certain bio-agents alone and mixed with penconazole

Derbalah¹,

Kot

Hamza³

2011

Archives Of Phytopathology And Plant Protection

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This study was carried out to evaluate the culture filtrates of certain bio-agents (Epicoccum nigrum, Epicoccum minitans, Epicoccum sp., Trichoderma harzianum, Trichoderma viride and Bacillus pumilus) alone and mixed with penconazole against powdery mildew in okra. The results showed that the culture filtrate of E. nigrum induced the highest efficacy against powdery mildew relative to other treatments in both tested seasons. Moreover, culture filtrate of E. nigrum mixed with the tested fungicide gave higher efficiency against powdery mildew than use of the fungicide alone. The efficacy of the tested culture filtrates against powdery mildew due to the presence of different antifungal compounds identified by (GC-MS) analysis. This study suggests the ability of using the culture filtrates of the tested bio-agents as alternative of fungicides to control powdery mildew in okra. Furthermore, the results implied the possibility to minimise the use of fungicides by mixing with the microbial culture filtrates.

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“…However, chemical applications may have deleterious effects on the environment, and often result in the development of resistance in the pathogen that is resistant or tolerant to the fungicide applied (McGrath, 1996a, 2001). It has been reported that strains of P. xanthii developed resistance to the fungicides benomyl and triadimefon throughout the United States (McGrath, 1996a; McGrath et al, 1996). To achieve effective control of powdery mildew, the use of fungicides must be carefully selected and their applications must be wisely managed.…”

mentioning

confidence: 99%

Management of Powdery Mildew in Squash by Plant and Alga Extract Biopesticides

Zhang

Mersha

Vallad³

et al. 2016

The Plant Pathology Journal

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Although many fungicides are registered for use to control powdery mildew on cucurbits, management of resistance to fungicides in pathogen populations still remains a major challenge. Two biopesticides Regalia SC and HMO 736 were evaluated in the greenhouse and field for their efficacy against powdery mildew in squash. In greenhouses, Regalia SC alone significantly (P < 0.05) reduced powdery mildew compared to the nontreated control, and was as effective as the chemical standard Procure 480SC (triflumizole). In alternation with Procure 480SC, Regalia SC demonstrated greater or equivalent effects on reducing the disease. HMO 736 alone showed varying levels of disease control, but alternating with Procure 480SC significantly improved control efficacy. In addition, application of Regalia SC or HMO 736 each in alternation with Procure 480SC significantly increased the chlorophyll content in leaves and the total fresh weight of squash plants, when compared with the water control, Regalia SC and HMO 736 alone. In field trials, application of Regalia SC and HMO 736 each alone significantly reduced disease severity in one of two field trials during the early stage of disease development, but not during later stages when disease pressure became high. Both Regalia SC and HMO 736 each applied in alternation with Procure 480SC significantly improved the control efficacy compared to Procure 480SC alone. Results from this study demonstrated that an integrated management program can be developed for powdery mildew in squash by integrating the biopesticides Regalia SC, HMO 736 with the chemical fungicide Procure 480SC.

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Fungicide Sensitivity ofSphaerotheca fuligineaPopulations in the United States

Cited by 43 publications

References 0 publications

Eight principles of integrated pest management

Eight principles of integrated pest management

Control of powdery mildew in okra using cultural filtrates of certain bio-agents alone and mixed with penconazole

Management of Powdery Mildew in Squash by Plant and Alga Extract Biopesticides

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