Irrigating Nursery Crops with Recycled Run-off: A Review of the Potential Impact of Pesticides on Plant Growth and Physiology
Interest in capturing and reusing runoff from irrigation and rainfall in container nurseries is increasing due to water scarcity and water use regulations. However, grower concerns related to contaminants in runoff water and other issues related to water safety are potential barriers to the adoption...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Society for Horticultural Science (ASHS)
2019-08-01
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| Series: | HortTechnology |
| Subjects: | |
| Online Access: | https://journals.ashs.org/horttech/view/journals/horttech/29/6/article-p716.xml |
| _version_ | 1818306845799874560 |
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| author | Shital Poudyal Bert M. Cregg |
| author_facet | Shital Poudyal Bert M. Cregg |
| author_sort | Shital Poudyal |
| collection | DOAJ |
| description | Interest in capturing and reusing runoff from irrigation and rainfall in container nurseries is increasing due to water scarcity and water use regulations. However, grower concerns related to contaminants in runoff water and other issues related to water safety are potential barriers to the adoption of water capture and reuse technologies. In this review, we discuss some of the key concerns associated with potential phytotoxicity from irrigating container nursery crops with recycled runoff. The concentration of pesticides in runoff water and retention ponds is orders of magnitude lower than that of typical crop application rates; therefore, the risk of pesticide phytotoxicity from irrigation with runoff water is relatively low. Nonetheless, some pesticides, particularly certain herbicides and insecticides, can potentially affect crops due to prolonged chronic exposure. Pesticides with high solubility, low organic adsorption coefficients, and long persistence have the greatest potential for crop impact because they are the most likely to be transported with runoff from container pads. The potential impact on plant growth or disruption of physiological processes differs among pesticides and sensitivity of individual crop plants. Growers can reduce risks associated with residual pesticides in recycled irrigation water by adopting best management practices (e.g., managing irrigation to reduce pesticide runoff, reducing pots spacing during pesticide application, use of vegetative filter strips) that reduce the contaminant load reaching containment basins as well as adopting remediation strategies that can reduce pesticide concentrations in recycled water. |
| first_indexed | 2024-12-13T06:48:58Z |
| format | Article |
| id | doaj.art-4c07487483004fb3ae826bde5eb0a34e |
| institution | Directory Open Access Journal |
| issn | 1943-7714 |
| language | English |
| last_indexed | 2024-12-13T06:48:58Z |
| publishDate | 2019-08-01 |
| publisher | American Society for Horticultural Science (ASHS) |
| record_format | Article |
| series | HortTechnology |
| spelling | doaj.art-4c07487483004fb3ae826bde5eb0a34e2022-12-21T23:56:12ZengAmerican Society for Horticultural Science (ASHS)HortTechnology1943-77142019-08-016716729https://doi.org/10.21273/HORTTECH04302-19Irrigating Nursery Crops with Recycled Run-off: A Review of the Potential Impact of Pesticides on Plant Growth and PhysiologyShital Poudyal Bert M. Cregg Interest in capturing and reusing runoff from irrigation and rainfall in container nurseries is increasing due to water scarcity and water use regulations. However, grower concerns related to contaminants in runoff water and other issues related to water safety are potential barriers to the adoption of water capture and reuse technologies. In this review, we discuss some of the key concerns associated with potential phytotoxicity from irrigating container nursery crops with recycled runoff. The concentration of pesticides in runoff water and retention ponds is orders of magnitude lower than that of typical crop application rates; therefore, the risk of pesticide phytotoxicity from irrigation with runoff water is relatively low. Nonetheless, some pesticides, particularly certain herbicides and insecticides, can potentially affect crops due to prolonged chronic exposure. Pesticides with high solubility, low organic adsorption coefficients, and long persistence have the greatest potential for crop impact because they are the most likely to be transported with runoff from container pads. The potential impact on plant growth or disruption of physiological processes differs among pesticides and sensitivity of individual crop plants. Growers can reduce risks associated with residual pesticides in recycled irrigation water by adopting best management practices (e.g., managing irrigation to reduce pesticide runoff, reducing pots spacing during pesticide application, use of vegetative filter strips) that reduce the contaminant load reaching containment basins as well as adopting remediation strategies that can reduce pesticide concentrations in recycled water.https://journals.ashs.org/horttech/view/journals/horttech/29/6/article-p716.xmlherbicidesinsecticidesnursery managementphytotoxicity |
| spellingShingle | Shital Poudyal Bert M. Cregg Irrigating Nursery Crops with Recycled Run-off: A Review of the Potential Impact of Pesticides on Plant Growth and Physiology HortTechnology herbicides insecticides nursery management phytotoxicity |
| title | Irrigating Nursery Crops with Recycled Run-off: A Review of the Potential Impact of Pesticides on Plant Growth and Physiology |
| title_full | Irrigating Nursery Crops with Recycled Run-off: A Review of the Potential Impact of Pesticides on Plant Growth and Physiology |
| title_fullStr | Irrigating Nursery Crops with Recycled Run-off: A Review of the Potential Impact of Pesticides on Plant Growth and Physiology |
| title_full_unstemmed | Irrigating Nursery Crops with Recycled Run-off: A Review of the Potential Impact of Pesticides on Plant Growth and Physiology |
| title_short | Irrigating Nursery Crops with Recycled Run-off: A Review of the Potential Impact of Pesticides on Plant Growth and Physiology |
| title_sort | irrigating nursery crops with recycled run off a review of the potential impact of pesticides on plant growth and physiology |
| topic | herbicides insecticides nursery management phytotoxicity |
| url | https://journals.ashs.org/horttech/view/journals/horttech/29/6/article-p716.xml |
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