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Lepidoptera Alert

Lepidoptera Alert

geplaas op Dond, 16 Jan 2020

Current weather patterns in southern Africa may be conducive to the outbreak of certain insect pests.

Lepidoptera Alert

CENTURION, 15 January 2020

Current weather patterns in southern Africa may be conducive to the outbreak of certain insect pests. Moist air from the tropics may bring another infestation of the fall armyworm into the Limpopo, North West, Free State and Northern Cape provinces while the current conditions in these provinces and KwaZulu-Natal are conducive to the outbreak of African army worm in veld and grazing paddocks. CropLife SA has been notified of massive clouds of small moths visible early evening in the northern parts of Namibia around Otjiwarongo, while a large-scale caterpillar infestation has also been reported by sunflower growers in the North West province of South Africa. Although the Karoo remains extremely dry in most parts, it is possible for the migratory locust to appear, although it is unlikely at this stage.

Crop and livestock farmers should be extremely vigilant inthe mentioned provinces and scout late afternoons in cash crops, fruit orchards, grazing paddocks and natural veld for swarms of small moths as thefirst signs of Lepidoptera pest outbreaks. Farmers who grow non-GM maize and cotton, as well as vegetable farmers, are very vulnerable to the fall army worm and need to make a special effort to scout for the pest. Scouting can be done visually in the early evening, but it is advisable to also use pheromone traps that are registered and available in South Africa.

Should a farmer suspect the presence of fall armyworm or any other large-scale invasions of Lepidoptera pests, they are urged to take good quality, close-up photographs of the moths, caterpillars and egg parcels and send it via WhatsApp to +27 (0)82 446 8946 (Dr. Gerhard Verdoorn, CropLife SA)for assistance with identification.

Farmers are also encouraged to contact CropLife SA foradvice on the effective control of any such large-scale outbreaks. In addition, the Resources section of CropLife SA’s website www.croplife.co.za contains guidelines for managing specific pests, including fall armyworm.

For media enquiries, please contact:

Name: Elriza Theron

Position: Marketing and Communications Manager

CropLife South Africa

Tel: 072 443 3067

Email: elriza@croplife.co.za


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