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The effects of clover and nitrogen fertiliser on the presence of pasture pests in dairy pastures

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posted on 2023-05-03, 18:20 authored by Alison PopayAlison Popay, Derrick WilsonDerrick Wilson, Colin FergusonColin Ferguson, David Chapman, Julia Lee, Gerald CosgroveGerald Cosgrove, David StevensDavid Stevens
A comprehensive dataset obtained from sampling four trials investigating interactions between perennial ryegrass and white clover under two levels of applied nitrogen (N) has highlighted different effects of pasture composition and N use on pasture pests. • For swards with white clover, presence of clover root weevil, whitefringed weevil and grass grub increased under low N by 36%, 11% and 5%, respectively, compared with high N treatments. • High N increased the presence of both Argentine stem weevil and root aphid by 7%. • Unexpectedly, clover reduced the presence of two grass feeders, Argentine stem weevil and black beetle, by 7% and 11% respectively. • Presence of grass grub was 17-30% lower under tetraploid ryegrasses than under diploids. • More clover and reduced N fertiliser inputs could reduce the frequency of black beetle and Argentine stem weevil with environmental benefits.

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This work is licensed under a Creative Commons Attribution-Non Commercial-NoDerivatives 4.0 International License.

Language

  • English

Does this contain Māori information or data?

  • No

Publisher

NZ Grassland Association Inc.

Journal title

Grassland Research and Practice Series

ISSN

0118-8581

Citation

Popay, A. J., Wilson, D. J., Ferguson, C. M., Chapman, D. F., Lee, J., Cosgrove, G. P., & Stevens, D. R. (2021). The effects of clover and nitrogen fertiliser on the presence of pasture pests in dairy pastures. Grassland Research and Practice Series, 17, 21–27. https://doi.org/10.33584/rps.17.2021.3448

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