Nine velvetleaf plants were found in a Mid Canterbury paddock during routine surveillance before Easter. The paddock is associated with the 2015 incursion via imported fodder beet seed. All growers should keep an eye out for this weed...its seed can remain viable in the soil for up to 60 years.
What is velvetleaf and why do we need to act?
Velvetleaf (Abutilon theophrasti) is a weed originally from China and India that has become a problem in many countries, including New Zealand. It can decrease crop yields and cause economic damage to agricultural production as it is an aggressive weed that quickly outcompetes crops and other plants for water and nutrients. The seed can also be viable for up to 60 years.
Velvetleaf has been present in New Zealand since 1948, but reports of its distribution had been previously limited. More significantly, it was found in 2015/16 on a number of farms in the South Island, originating from imported fodder beet seed, and has been found in a growing number of properties across the country.
It has the potential to reduce New Zealand's GDP by up to $484.7 million by 2030. The recommended option for long-term management is a nationally coordinated program, with MPI coordinating the work.
- All velvetleaf finds since 2015 have been in fodder beet paddocks sown with one of four varieties: Kyros, Bangor, Troya, and Feldherr.
- These varieties were sold in both the North and South Islands in the 2015/16 season.
- All growers of these fodder beet varieties are advised to continue to check their crops for velvetleaf throughout the growing season.
- As the seed is viable for up to 60 years, long-term management is vital as is on-farm biosecurity.
- If plants are found, do not remove them. Photograph them, mark their location, and then contact MPI Biosecurity on 0800 80 99 66
- It is still possible that this weed could be present in other fodder beet varieties, so keep an eye out on all crops.
- If you need assistance with long-term management plans please get in touch.
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