This season is critical in the strategic management of the devastating disease lupin anthracnose, according to the Department of Primary Industries.
DPI plant pathologist, Kurt Lindbeck, said surveys across NSW in 2017 found no evidence the disease has spread beyond six Riverina properties identified with the disease in 2016.
He said it is only with proper management this can be maintained.
‘‘That’s good news, but infected seed could remain undetected and this season every New South Wales lupin crop must be managed as a possible disease risk,’’ Dr Lindbeck said.
‘‘Fungicide seed treatment is crucial in implementing an anthracnose management plan as infected seed is the primary means of pathogen survival and spread.
‘‘Lupin seed can be cleaned and treated with a fungicide now in preparation for sowing this season.
‘‘Rhizobia should be applied to seed at sowing, to maximise survival and minimise exposure to fungicide seed dressings, which are toxic to rhizobia.’’
NSW DPI advises producers follow the five point lupin anthracnose management plan:
●Lupin seed should be treated with a fungicide treatment containing thiram
●2018 lupin crops should be isolated from last year’s lupin stubble
●Control volunteer lupins on your property
●Control machinery and people movement into and out of lupin crops
●Apply foliar fungicide containing mancozeb, chlorothalonil or azoxystrobin at six to eight weeks post emergence with a follow-up treatment at pre-canopy closure