Effect of the spray application technique on the deposition of entomopathogenic nematodes in vegetables

Eva Brusselman, Bert Beck, Sabien Pollet, Femke Temmerman, Pieter Spanoghe, Maurice Moens, David Nuyttens

Research output: Contribution to journalA1: Web of Science-articlepeer-review

Abstract

BACKGROUND: The present study compared entomopathogenic nematode delivery at the base of savoy cabbage and cauliflower, at the lower side of savoy cabbage and cauliflower leaves and in leek stems and the ground deposition using a five-nozzle spray boom equipped with an ISO 08 flat fan, an air induction flat fan and Twinjet spray nozzles. Additionally, an air support system and a row application system were evaluated.
RESULTS: Approximately 40% of the applied nematodes did not reach the foot of the cabbage plants. The use of an air support system or a row application system improved nematode deposition at the savoy cabbage base. Relative nematode deposition on the lower side of savoy cabbage leaves was 27.20% while only 2.64% of the applied nematodes reached the lower side of cauliflower leaves. After spraying leek with a standard boom, a low relative nematode deposition (26.64%) was measured in the leek stem. Nozzle type affected the distribution of nematodes in droplet spots.
CONCLUSION: Nozzle type has a minor effect on the number of entomopathogenic nematodes delivered on difficult-to-reach targets. The use of modified spray application techniques directing the spray to the target site are necessary to increase the chances of contact of entomopathogenic nematodes with their target.
Original languageEnglish
JournalPest Management Science
Volume68
Issue number3
Pages (from-to)444-453
Number of pages10
DOIs
Publication statusPublished - 2012

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