Rick Horbury (Bayer Crop Science)
|Contributor||West Midlands Group|
Site 5, Badgingarra, WA
1. Compare the efficacy of Aviator Xpro to commercial standards for sclerotinia control.
2. Compare yield and $return on investment/ha ($ROI/ha)
Using the highest label rate of either Aviator Xpro or Prosaro in the first application for sclerotinia lowered the level of sclerotinia infection and recorded a higher $ROI/ha in this trial. Increasing the rate of fungicide increases early activity on active disease but will also increase the length of protection from reinfection.
The use of higher rates under high sclerotinia disease pressure is recommended not only in a single spray application to extend the window of protection but as recorded in this trial it can provide benefits to a two spray strategy. Improvements in length and strength of sclerotinia control from the use of a higher rate in the first application have been recorded across multiple commercial trials conducted by Bayer Crop Science across Australia in the 2016 season.
|Lead research organisation||
|Host research organisation||
West Midlands Group
|Trial funding source||Bayer|
Thanks to the Scotney family for hosting the site and to Living Farm for the harvest of the trial.
Aviator, Xpro, Prosaro, Poncho, Jockey and Leafshield are registered trademarks of the Bayer Chemical Group.
|Other trial partners||Not specified|
|Sow rate or Target density||2.3kg/ha|
Grower's seeder with knife points and press wheels.
|Sow date||20 April 2016|
|Harvest date||Not specified|
|Plot size||2.3m x 15m|
20/04/16: 120 kg/ha K-till® + 40 L/ha Flexi-N® + 200 mL/ha copper + 200 mL/ha Intake® Hiload
Knockdown: 7/04/16: 1 L/ha Roundup® Ultramax® + 120 mL/ha alpha cypermethrin + 100 mL/ha oxyfluorfen + 0.1% v/v LI700®
Pre-emergent: 20/04/16: 1.5 L/ha paraquat + 2.2 L/ha Treflan® + 1.1 kg/ha atrazine + 300 mL/ha chlorpyrifos
Post emergent: 26/4/16: 0.55 kg/ha atrazine + 80 mL/ha Talstar®
1/6/16: 0.85 kg/ha atrazine + 80 g/ha Lontrel + 80 mL/ha Alpha Forte® + 500 mL/ha clethodim + 1 % AmSul® + 0.5% Inbound®
Post em fungicide:
25% flower: 12/7/16 14.00-15.00: 12.5˚C, 77% RH, bottom of crop wet
back pack sprayer @ 130 L/ha, 5 km/h, 2 bar with DG110015 nozzles
55% flower: 10/8/16 13.00-13.40: 15.9˚C, 78.8% RH, bottom of crop wet
back pack sprayer @ 150 L/ha, 4 km/h, 2 bar with DG110015 nozzles
SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.