Entomopathogenic Nematode Compatibility with Vineyard Fungicides
Vineyards, covering over seven million hectares worldwide, holdsignificant socio-cultural importance. Traditionally reliant onconventional practices and agrochemicals, this agroecosystemfaces environmental challenges, including soil and water pollution.Sustainable viticulture, driven by eco-friendly practices and costreduction, has gained prominence, underlining the importance ofbiological control agents such as entomopathogenic nematodes(EPNs). EPNs naturally occurr in vineyard soils and play a crucial rolein controlling pest damage. Ensuring compatibility between EPNsand the commonly used vineyard fungicides is critical, as theseapplications constitute the predominant pest-management practiceduring the productive grapevine cycle.This study assessed the impact of authorized grapevinefungicides on EPNs, focusing on the survival of populations andsublethal effects on their virulence. We investigated the compatibilityof two EPN populations (Steinernema feltiae 107 and S. carpocapsae‘All’) with three organic production-approved products (Bacilluspumilus, sulfur, and copper oxychloride) and two synthetic chemicals(Trifloxystrobin and Mancozeb). Our findings revealed that the viabilityof S. feltiae 107 was reduced when exposed to sulfur and copperoxychloride, and its virulence was affected by copper oxychlorideand Mancozeb, although only two days after exposure and with nosignificant differences for larval mortality at five days.In contrast, S. carpocapsae ‘All’ exhibited full compatibilitywith all five fungicides, with no impact on its viability or virulence.Consequently, our results suggested that the evaluated fungicidescould be co-applied on both EPN populations if they were employedon the same day. However, further research on multi-targetinteractions is needed to ensure the successful implementation ofthis kind of co-application
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Sciendo
2023-11-23
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| Subjects: | Agrochemicals, Grapevine, Steinernema, Virulence, Biological control, |
| Online Access: | http://hdl.handle.net/10261/340643 |
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