English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Sitona obsoletus is a serious pasture pest in New Zealand where its root-feeding larvae reduce white clover cover and nitrogen fixation. To maintain production, farmers may compensate by increasing inputs. The parasitic wasp Microctonus aethiopoides Loan was introduced for biological control of S. obsoletus and achieved parasitism rates exceeding 70%. In Southland, where S. obsoletus was first detected in 2010, unusually severe and prolonged infestations during 2013 and 2014 prompted intensive biological control releases in 2014 and 2015. This study evaluated if they were cost effective in 2015. On dairy farms biological control returned $14.78/ha/year or $2.3 million over the 158,017 ha. On sheep and beef farms, the estimated return was $6.86/ha/year or $4.7 million over 719,854 ha. Monte Carlo simulations were used to estimate returns ($/ha/year) using plausible ranges of model parameter values, and returns were positive in at least 97.5% of simulations. Biological control of S. obsoletus has returned a net benefit in Southland.

proceedings of the new zealand weed and pest control conference/new zealand plant protection/proceedings of the ... national weeds conference/proceedings of the new zealand weed control conference/proceedings of the new zealand plant protection conference

lepidus Economic benefits of biological control of <i>Sitona obsoletus</i> (clover root weevil) in Southland pasture