Commercial Development of Biofungicides

Hofstein, R.; Chapple, Andrew C.

doi:10.1385/0-89603-515-8:77

Cited by 11 publications

(7 citation statements)

References 26 publications

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“…Concrete explanations for why the results obtained under controlled conditions may not be reproduced under field conditions are not available; however, detrimental environmental effects are thought to be the major constraints (Rodgers 1993). Possible reasons are photolability (Lange et al 1993), degradation on the phyllosphere by microorganisms (Spurr 1990) or the general sensitivity of preparations to environmental conditions (Jacobson and Backman 1993;Hofstein and Chapple 1999). In addition, loss of biological activity and stability of natural compounds was found to be higher in the field than under controlled conditions (Benner 1993).…”

Section: Discussionmentioning

confidence: 99%

Control of late blight in organic potato production: evaluation of copper-free preparations under field, growth chamber and laboratory conditions

et al. 2007

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In order to replace copper fungicides in organic potato production, 53 copper-free preparations (CFPs) based on natural compounds, including plant extracts and microorganisms, and five copper preparations were evaluated for their potential to control Phytophthora infestans, the pathogen that causes late blight of potatoes. In in vitro assays, 30% of the CFPs inhibited indirect germination of sporangia, 26% mycelial growth and in growth chamber experiments, 21% efficiently reduced foliar blight of tomato plants.In micro-plot field trials with applications twice a week, the copper preparations were the most effective and reduced foliar blight by 99%. Of the CFPs tested, Oekofluid P, Mycosin and other sulphuric clays, and C-2000 reduced late blight the most, from 63% to 37%.

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Section: Discussionmentioning

confidence: 99%

Control of late blight in organic potato production: evaluation of copper-free preparations under field, growth chamber and laboratory conditions

et al. 2007

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“…Achievements like providing a significant extension of shelf-life of at least 6 months (preferably 18) at environmental conditions, to be stored over two seasons, and allowing products to be applied with the existing application equipment (Hofstein and Chapple 1998) are part of formulation.…”

Section: Formulation Of a Biological Control Agentmentioning

confidence: 99%

Biological control of postharvest diseases of fruit

2011

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Postharvest decay in harvested fruit causes considerable economical losses. Fungicides are the primary means to control these losses. Public concern in food safety and environmental issues and the increase of pathogen resistant populations have enhanced the interest in developing alternative methods to fungicides to control postharvest fruit decay. During the last two decades a huge information and advances concerning the selection of antagonists, mode of action, different approaches to enhance biocontrol activity, formulation and production have been achieved, and some biofungicides are already in the market. It is likely that several more products will enter the market in the near future, as the result of the biological control research programs worldwide. Nonetheless, it is necessary to continue finding new potential microorganisms, better understanding the mode of action, and pathogen, antagonist and host interactions, to increase the potential of biocontrol helping to become a real alternative to synthetic postharvest fungicides. This article presents an overview of postharvest biological control approaches and explores new research possibilities to improve biocontrol activity.

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“…This is possible because the chemical fungicide was applied at full bloom when disease pressures were most likely to be high (Hildebrand et al, 2001). It has been reported that biofungicides are less effective when disease pressures are high (Hofstein and Chapple, 1999;Reiss and Jørgensen, 2017), hence rotating the chemical fungicides is critical in achieving adequate disease control. The timing of Switch ® treatment helps to extend the pre-harvest interval which can contribute significantly to residue reduction.…”

Section: Discussionmentioning

confidence: 99%

Potential use of biofungicides and conventional fungicide for the management of Botrytis blossom blight in lowbush blueberries

Abbey

Percival

Jaakola

et al. 2021

Canadian Journal of Plant Pathology

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Botrytis blight is an economically important disease of lowbush blueberry that causes significant yield loss annually. In this study, four biofungicides, Diplomat 5SC  (polyoxin D), Timorex Gold  (tea tree oil), Fracture  (BLAD) and Serenade MAX  (Bacillus subtilis) were evaluated for their disease suppression potential against B. cinerea individually and in rotation with Switch ® under field conditions. Three applications of each biofungicide were made for the stand alone treatment at 7-10 days' interval with Switch ® replacing the 2 nd application in the combined treatment. Resultsindicated that the products have potential for use as a biofungicide in lowbush blueberries. All the stand alone and rotational applications brought about significant reduction in disease development, especially in 2019. The application of Diplomat 5SC  and Fracture ® -Switch ® rotation decreased disease development by over 63% in 2018. In 2019, all stand alone treatments reduced disease development by more than 42% whereas their rotation with switch reduced disease by over 69% at Earltown and at least 30% at Farmington. Stand alone Diplomat 5SC ® and Timorex Gold ® along with Fracture ® , Timorex Gold ® and Serenade MAX  rotation resulted in over 20% more berries.This study suggests that the biofungicides and their integration with chemical fungicides have the potential as an alternative management strategy against Botrytis blossom blight to reduce the use of conventional fungicides and produce fruit with no detectable fungicide residues.

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Commercial Development of Biofungicides

Cited by 11 publications

References 26 publications

Control of late blight in organic potato production: evaluation of copper-free preparations under field, growth chamber and laboratory conditions

Control of late blight in organic potato production: evaluation of copper-free preparations under field, growth chamber and laboratory conditions

Biological control of postharvest diseases of fruit

Potential use of biofungicides and conventional fungicide for the management of Botrytis blossom blight in lowbush blueberries

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