Whitefly Control Strategies against Tomato Leaf Curl New Delhi Virus in Greenhouse Zucchini

Autor: Estefanía Rodríguez, Mª Mar Téllez, Dirk Janssen
Rok vydání: 2019
Předmět:
Zdroj: International Journal of Environmental Research and Public Health, Vol 16, Iss 15, p 2673 (2019)
International Journal of Environmental Research and Public Health
Volume 16
Issue 15
ISSN: 1660-4601
DOI: 10.3390/ijerph16152673
Popis: (1) Background: Tomato leaf curl New Delhi virus (ToLCNDV), transmitted by tobacco whitefly (Bemisia tabaci Gennadius) (Hemiptera: Aleyrodidae), is of major concern in the cultivation of zucchini. The threat of this virus motivates reliance on chemical vector control but European consumers&rsquo
demands for vegetables grown free of pesticides provides an important incentive for alternative pest management
(2) Methods: Different whitefly management strategies and ToLCNDV incidences were surveyed in commercial zucchini greenhouses in south-east Spain. In an experimental greenhouse, three different whitefly control strategies, biological, chemical, and integrated (IPM), were evaluated in a replicated trial to determine the most effective strategy for virus suppression (3) Results: Whitefly was present in all commercial zucchini crops surveyed, whereas fewer crops had Amblyseius swirskii or other natural enemies. During three consecutive years, pest management was increasingly based on chemical treatments. Yet, ToLCNDV was widespread in zucchini greenhouses. Experimental results showed that the order of best strategy for virus suppressing was integrated management (73%) >
biological control (58%) >
chemical control (44%)
and (4) Conclusions: IPM was the best strategy for virus suppression. The results can assist in the design of appropriate control strategies for chemical pesticide reduction and decision-making in pest management.
Databáze: OpenAIRE