![]() ![]() Harvest for silage/balage and ensure the bulk host material is removed from the site and take steps to manage any volunteer crop coming through as per the above.If you have a whole field planted with maize or sweetcorn: Mow or intensively graze the field to remove the plant hosts/feed source and consider planting a different crop next season.Hand pull the volunteer plants and securely dispose them if there are small numbers.Spot spray the volunteers with insecticide (ideally diamides or spinosyns/spinosoids), or.Spray plants with any herbicide you have in the shed, follow by tilling to a minimum 10cm depth. ![]() Manage it: Management options for crop regrowth/volunteers, include: ![]() RESISTANT SPECIES NOTICE All references to armyworm on the crops listed below refer to the species. Avoid applications to surfaces where visible spray residues are objectionable. Report it: Call Biosecurity New Zealand’s Pest and Disease Hotline (0800 80 99 66) or report online at /pest. Spray depOSits on painted or stained surfaces or finishes (Le., cars, houses, trailers, boats, etc.) should be immediately removed by washing to prevent discoloration. Photograph it: It can easily be mistaken for other species, so if you suspect fall armyworm, take a photo (caterpillars at least 2cm long). Information about this pest and what to look for can be found here. Biosecurity New Zealand has had people on the ground checking paddocks in areas where the pest has been found, and staff will be available for ongoing support as required. MPI has extended the request for paddock checks to growers in the top-of-the South Island, but say the risk for South Island crops is lower.įall armyworm thrives in very warm climates and it is unlikely to survive winter in most areas of New Zealand. Confirmed detections have been made Tauranga (eggs only) and in paddocks near Hamilton, in South Auckland, Waitara and Gisborne.
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