The New Zealand Merino Company, with the assistance of Dick Arnst, ran a trial at Glentanner Station to investigate the effectiveness of glyphosate and haloxyfop-P in controlling low-quality grass species and promoting the existing, naturalised clovers.

Chemical topping can be an effective way to reduce competition from low quality grasses, allowing the resident clovers to re-establish. Following the spray treatment with good grazing management, and allowing the clover to set-seed and regenerate, will allow long-term persistence. Click here for more information.