DPI’s new guide to sil­ver­leaf

The Northern Star - Northern New South Wales Rural Weekly - - RURAL PHOTOGRAPHY -

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.

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