Ryegrass resistant to glyphosate firstly found in New Zealand

'Ryegrass resistant to glyphosate herbicides, including Roundup, has shown up in New Zealand for the first time, on a Marlborough vineyard.’

You may have noticed in the news reports that a glyphosate resistant ryegrass has been found in Marlborough. The report identifies the repetitive use of glyphosate on its own can cause this effect.

Weed Weapon contains two active ingredients of different types. These actives, glyphosate and saflufenacil, work together in what is called a synergistic way; improving the efficacy of both when used together.

The use of two active ingredients also means that it will control weeds that might be resistant or tolerant of glyphosate alone, and it greatly reduces the risk of development of resistance in weeds.

Resistance to herbicides through overuse of the same single active ingredient is a concern for farmers, horticulturalists and gardeners. It is good practice to use products that combine actives of different types to prevent resistance developing.