From the Ground Up, Issue 85

Read information on scouting and the current black-grass situation in this January 2026 update.

Arable growers worried that some weeds in their crops may have developed herbicide resistance can now get the suspected plants tested for free. Find out how you can take part here.

A velvetleaf find in a paddock that has been ‘clean’ for seven years, is a clear reminder of how long this weed’s seed will remain viable.

A review of New Zealand’s fall armyworm surveillance network has confirmed that crop scouting is the most reliable and informative tool for understanding fall armyworm (FAW) activity. However, it also acknowledges that scouting is time consuming and that industry personnel struggle to keep up in the height of the season.

Growers are reminded to report any grass weeds that appear unfamiliar or could resemble black-grass (Alopecurus myosuroides). Early reporting remains one of our strongest tools for protecting the industry.

If you couldn't make it to ARIA this year, make sure you check out the booklet here. 

This Arable Update describes the biology of small broomrape and initial data on control options including herbicides and their application timing.

Maize is one of the easiest crops to mechanically weed and levels of weed control comparable to herbicides can be achieved. Find out more about the options available and how they work in this maize update.

The Environmental Protection Authority (“EPA”) published a Notice of Direction Prohibiting the Use and Requiring Disposal of Chlorpyrifos Containing Substances in the New Zealand Gazette on 1 September 2025.

Growers are reminded to report any grass weeds that appear unfamiliar or could resemble black-grass (Alopecurus myosuroides). Early reporting remains one of our strongest tools for protecting the industry.