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Plant pathogens in recycled irrigation water in commercial plant nurseries and greenhouses: their detection and management

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Abstract

With water conservation and reuse a priority for communities worldwide, recycling irrigation water in commercial plant nurseries and greenhouses is a logical measure. Plant pathogenic microorganisms may be present in the initial water source, or may accrue and disperse from various points throughout the irrigation system, constituting a risk of disease to irrigated plants. The continual recycling of this water is exacerbating this plant disease risk. Accurate and timely detection of plant pathogenic propagules in recycled irrigation water is required to assess disease risk. Both biological and economic thresholds must be established for important plant-pathosystems. Plant pathogens in recycled irrigation water can be managed by a variety of treatment methods that can be arranged in four broad categories: cultural, physical, chemical, and biological. An integrated approach using one or more techniques from each category is likely to be the most effective strategy in combating plant pathogens in recycled irrigation water.

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Acknowledgments

This review is based on a report of a study commissioned by Nursery & Garden Industry Australia (NGIA) and funded jointly by the Nursery Industry Levy and the Commonwealth Government via Horticulture Australia Limited (HAL) (Project # NY08002). The author thanks Dr Anthony Kachenko (NGIA) for constructive comments on the draft manuscript of the original study report.

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  1. Melbourne School of Land and Environment, The University of Melbourne, Burnley Campus, 500 Yarra Blvd, Richmond, VIC, 3121, Australia

    Sally M. Stewart-Wade

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Communicated by J. Ayars.

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Stewart-Wade, S.M. Plant pathogens in recycled irrigation water in commercial plant nurseries and greenhouses: their detection and management. Irrig Sci 29, 267–297 (2011). https://doi.org/10.1007/s00271-011-0285-1

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