DPI’s new guide to silverleaf
THE first national guide to managing one of Australia’s worst weeds, silverleaf nightshade, has been developed with input from scientists, farmers, industry and community groups.
NSW Department of Primary Industries principal research scientist, Hanwen Wu, said the highly persistent summer-active perennial invaded crops and pastures and had caused yield losses of up to 75 per cent in the eastern states.
“Silverleaf nightshade can be managed through timing and persistence in applying the controls,” Dr Wu said.
“We have developed a dual action approach to weed management, which offers improved long-term control options to deliver economic benefits. The key element in managing silverleaf nightshade is to target both seeds and roots. An equal emphasis is given to preventing seed set, reducing the seedbank and controlling the extensive root system.
“Grazing, slashing or herbicides can help prevent up to 100 per cent seed set and must occur in late spring or early summer when plants are at early flowering, before green berries form.”
The guide can be found at www.dpi.nsw.gov.au.