Rhizoctonia control improved by liquid banding of fungicides
McKay, A., Bogacki, P., Desbiolles, J., Correll, R., Gupta, V., Hüberli, D., MacLeod, W., Battaglia, R., McKee, K., May, L., Forsyth, L. and Roget, D. (2014) Rhizoctonia control improved by liquid banding of fungicides. In: 2014 Grains Research Update, Australia Adviser Update, 25 - 26 February, Adelaide, South Australia pp. 245-249.
New fungicides and methods of application are being developed to help prevent yield losses caused by Rhizoctonia. Several products have recently been registered for suppression of Rhizoctonia (see Cereal Seed Treatments 2014 Factsheet).
The first field trials to evaluate banding fungicides for Rhizoctonia control were conducted in WA in 2009 at Katanning and Northam (funding: GRDC) and SA in 2010 at Geranium (funding: SAGIT/Syngenta). In the SA trial the best treatment was shown to be a combination of fungicides applied as “split” streams on the soil surface and in-furrow below the seed. This combination produced a 0.6 t/ha yield responses in knife point and rippled coulter sown treatments (knife point yielded 0.25 t/ha more than rippled coulter). The application above the seed was targeted to protect the crown roots and the stream at the base of the furrow to protect the seminal roots.
This paper summarises the yield results from most of the field trials conducted in SA and WA from 2011 to 2013 to evaluate different ways of banding fungicides to reduce yield losses caused by Rhizoctonia and generate efficacy data to support label registration by the APVMA.
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