Targeted liquid delivery of fungicides: a new tool for Rhizoctonia root rot control
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(Published version)
Date
2015
Authors
Bogacki, P.
Desbiolles, J.
Correll, R.
Huberli, D.
MacLeod, B.
McKay, A.
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Journal article
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Eyre Peninsula Farming Systems Summary 2014, 2015
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Abstract
This three year trial programcontributed to Uniform beingregistered in late 2014 forliquid application in-furrowand on the soil surface tocontrol Rhizoctonia root rot.
Uniform banding treatmentshad better efficacy thanVibrance seed treatment.Banding treatments wereassociated with moresignificant and biggeryield responses, with dualbanding of Uniform in-furrow3-4 cm below the seed andon the surface behind thepress wheel giving the mostconsistent yield and roothealth responses acrossseasons.
Efficacy data was alsogenerated to supportregistration for the liquidapplication of codedfungicide BYF14182in-furrow to controlRhizoctonia. Registrationis pending and expected inearly April.
Yield responses achievedby banding BYF14182 infurrowwere not significantlydifferent from EverGol Primeseed treatments. However,banding in-furrow combinedwith seed treatmentsignificantly improved roothealth compared to bandingin-furrow or seed treatmentalone.
Fungicide responses didvary from season to seasonsuggesting there is anenvironmental componentaffecting efficacy. Yieldresponses were generallybigger in the better seasons.
Growers now have greaterflexibility in choosinga method of fungicideapplication for Rhizoctoniacontrol, which can alsooffer improved efficacy.Importantly, fungicides stillneed to be used as part ofan integrated managementpackage. Banding willreduce patch incidence andseverity but not eliminatepatching altogether.