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Formulations to Improve Biocontrol Products Shelf-Life and/or Ecosystem Adaptation

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How Research Can Stimulate the Development of Commercial Biological Control Against Plant Diseases

Part of the book series: Progress in Biological Control ((PIBC,volume 21))

Abstract

Highly productive agriculture depends on the application of chemical pesticides which may have negative impacts on human health and the environment. Biological control based on the use of microbial antagonists is a very promising alternative disease control method. Unfortunately, its application at a commercial scale has encountered several difficulties. In addition to financial and regulatory issues, there are two important obstacles in the development of a successful biological control agent: the difficulty of developing a formulation that preserves viability and efficacy for long storage periods and the susceptibility of the microorganism to stressful environmental conditions. In this Chapter, possible solutions are offered to overcome the issues previously described. First of all, the use of modified growth media that favors the accumulation of compatible solutes in the microbial cells can be utilized to obtain formulations with higher tolerance to unfavorable environmental conditions and to dehydration during formulation. Moreover, significant impacts on cell survival and shelf-life can obtained by the use of protectants during the dehydration processes or the use of isotonic solutions for preservation of liquid formulations. Furthermore, the use of coating forming additives mixed with the biological control agent in the treatment broth has proven to have benefits in the colonization and persistence of the microorganism on plant tissues. Finally, two innovative processes that have been developed recently are described: the use of a fluidized-bed spray-dryer to obtain dry formulations with several advantages over the more commonly used spray-drying, freeze drying and fluid bed drying systems and the use of formulations with the ability to form films on plant surfaces without the need of extra additives in the spray mix.

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Authors and Affiliations

  1. Postharvest Program, IRTA, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Lleida, Catalonia, Spain

    Neus Teixidó, Guillem Segarra, Carla Casals, Josep Usall & Rosario Torres

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  1. Neus Teixidó
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  2. Guillem Segarra
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  3. Carla Casals
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  4. Josep Usall
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  5. Rosario Torres
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Correspondence to Neus Teixidó .

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Editors and Affiliations

  1. Departamento de Protección Vegetal, SGIT-INIA, Madrid, Spain

    Antonieta De Cal

  2. Departamento de Protección Vegetal, SGIT-INIA, Madrid, Spain

    Paloma Melgarejo

  3. Applied Mycology Group, Environment and AgriFood Theme, Cranfield University, Cranfield, Bedford, UK

    Naresh Magan

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Teixidó, N., Segarra, G., Casals, C., Usall, J., Torres, R. (2020). Formulations to Improve Biocontrol Products Shelf-Life and/or Ecosystem Adaptation. In: De Cal, A., Melgarejo, P., Magan, N. (eds) How Research Can Stimulate the Development of Commercial Biological Control Against Plant Diseases. Progress in Biological Control, vol 21. Springer, Cham. https://doi.org/10.1007/978-3-030-53238-3_15

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