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  • 4. FARMLAND CONSERVATION
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  • 4.6 Threat: Agri-chemicals
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    Plan

    Plan détaillé Texte intégral Beneficial Likely to be beneficial Unknown effectiveness (limited evidence) No evidence found (no assessment) Evidence not assessed

    What Works in Conservation 2017

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    Table des matières

    4.6 Threat: Agri-chemicals

    p. 272-274

    Texte intégral Beneficial Leave headlands in fields unsprayed (conservation headlands) Reduce fertilizer, pesticide or herbicide use generally Use organic rather than mineral fertilizers Likely to be beneficial Reduce chemical inputs in grassland management Unknown effectiveness (limited evidence) Provide buffer strips alongside water courses (rivers and streams) Restrict certain pesticidesNo evidence found (no assessment) Evidence not assessed Make selective use of spring herbicides

    Texte intégral

    Based on the collated evidence, what is the current assessment of the effectiveness of interventions for agri-chemicals?

    Beneficial

    ● Leave headlands in fields unsprayed (conservation headlands)
    ● Reduce fertilizer, pesticide or herbicide use generally
    ● Use organic rather than mineral fertilisers

    Likely to be beneficial

    ● Reduce chemical inputs in grassland management

    Unknown effectiveness (limited evidence)

    ● Provide buffer strips alongside water courses (rivers and streams)
    ● Restrict certain pesticides

    No evidence found (no assessment)

    ● Buffer in-field ponds

    Evidence not assessed

    ● Make selective use of spring herbicides

    Beneficial

    Leave headlands in fields unsprayed (conservation headlands)

    1Twenty-two studies from 14 experiments (including two randomized, replicated, controlled) from five countries found conservation headlands had higher invertebrate or plant diversity than other habitats, twelve studies from ten experiments (three randomized, replicated, controlled) did not. Twenty-seven studies from 15 experiments (of which 13 replicated, controlled) from five countries found positive effects on abundance or behaviour of some wildlife groups. Nineteen studies from 13 experiments (12 replicated, controlled) from four countries found similar, or lower, numbers of birds, invertebrates or plants on conservation headlands than other habitats. Assessment: beneficial (effectiveness 90%; certainty 75%).
    http://www.conservationevidence.com/actions/652

    Reduce fertilizer, pesticide or herbicide use generally

    2Thirty-four studies (including a systematic review) from 10 countries found reducing fertilizer, pesticide or herbicide inputs benefited some invertebrates, plants or birds. Twenty-five studies (including seven randomized, replicated, controlled trials) from eight countries found negative or no clear effects on some invertebrates, plants or birds. Assessment: beneficial (effectiveness 100%; certainty 70%).
    http://www.conservationevidence.com/actions/139

    Use organic rather than mineral fertilizers

    3Fourteen studies (including four randomized, replicated, controlled trials) from six countries found areas treated with organic rather than mineral fertilizers had more plants or invertebrates or higher diversity. A randomized, replicated, controlled trial from the UK found no effect on weed numbers. Two studies (including a small trial from Belgium) found organic fertilizers benefited invertebrates, a UK review found that in large quantities they did not. Assessment: beneficial (effectiveness 100%; certainty 70%).
    http://www.conservationevidence.com/actions/134

    Likely to be beneficial

    Reduce chemical inputs in grassland management

    4Six studies (including a randomized, replicated, controlled before-and-after trial) from three countries found stopping fertilizer inputs on grassland improved plant or invertebrate species richness or abundance. Two reviews from the Netherlands and the UK found no or low fertilizer input grasslands favour some birds and invertebrates. Five studies (two replicated trials of which one randomized and one replicated) from three countries found no clear effects on invertebrates or plants. Assessment: likely to be beneficial (effectiveness 90%; certainty 60%).
    http://www.conservationevidence.com/actions/694

    Unknown effectiveness (limited evidence)

    Provide buffer strips alongside water courses (rivers and streams)

    5Three studies (including one replicated site comparison) from the Netherlands and the UK found riparian buffer strips increased diversity or abundance of plants, invertebrates or birds and supported vegetation associated with water vole habitats. Two replicated site comparisons from France and Ireland found farms with buffer strips did not have more plant species than farms without strips. Assessment: unknown effectiveness — limited evidence (effectiveness 10%; certainty 15%).
    http://www.conservationevidence.com/actions/120

    Restrict certain pesticides

    6A small UK study found two fungicides that reduced insect abundance less than an alternative. A replicated, controlled trial in Switzerland found applying slug pellets in a band at the field edge was as effective as spreading the pellets across the field. Assessment: unknown effectiveness — limited evidence (effectiveness 50%; certainty 5%).
    http://www.conservationevidence.com/actions/565

    No evidence found (no assessment)

    7We have captured no evidence for the following intervention:

    • Buffer in-field ponds

    Evidence not assessed

    Make selective use of spring herbicides

    8A randomized, replicated, controlled study from the UK found spring herbicides had some benefits for beneficial weeds and arthropods. Assessment: this intervention has not been assessed.
    http://www.conservationevidence.com/actions/98

    Précédent Suivant
    Table des matières

    Creative Commons - Attribution 4.0 International - CC BY 4.0

    Le texte seul est utilisable sous licence Creative Commons - Attribution 4.0 International - CC BY 4.0. Les autres éléments (illustrations, fichiers annexes importés) sont « Tous droits réservés », sauf mention contraire.

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    Format

    Sutherland, W. J., Dicks, L. V., Ockendon, N., & Smith, R. K. (éds.). (2017). 4.6 Threat: Agri-chemicals. In What Works in Conservation 2017. Cambridge: Open Book Publishers. Consulté à l’adresse https://books.openedition.org/obp/3778
    Sutherland, William J., Lynn V. Dicks, Nancy Ockendon, et Rebecca K. Smith, éd. « 4.6 Threat: Agri-Chemicals ». In What Works in Conservation 2017. Cambridge: Open Book Publishers, 2017. https://books.openedition.org/obp/3778.
    Sutherland, William J., et al., éditeurs. « 4.6 Threat: Agri-Chemicals ». What Works in Conservation 2017, Open Book Publishers, 2017, https://books.openedition.org/obp/3778.

    Référence numérique du livre

    Format

    Sutherland, W. J., Dicks, L. V., Ockendon, N., & Smith, R. K. (éds.). (2017). What Works in Conservation 2017. Cambridge: Open Book Publishers. Consulté à l’adresse https://books.openedition.org/obp/3710
    Sutherland, William J., Lynn V. Dicks, Nancy Ockendon, et Rebecca K. Smith, éd. What Works in Conservation 2017. Cambridge: Open Book Publishers, 2017. https://books.openedition.org/obp/3710.
    Sutherland, William J., et al., éditeurs. What Works in Conservation 2017. Open Book Publishers, 2017, https://books.openedition.org/obp/3710.
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