To answer the questions of whether applying a preventative spray regardless of conditions was good practice (i.e. does it help in controlling disease?) and was it cost effective?
Key messages
In the 2001 season there was no benefit from the application of an alphacypermethrin insecticide application to barley and lentil crops.
The dry summer of 2000/2001 resulted in very few host plants for aphids and virus diseases and threshold levels for disease carry over potential were not reached.
In wet summers with many host plants surviving it is possible that preventative spraying with alphacypermethrin could be worthwhile.
Trial source data and summary not available Check the trial
report PDF for trial results.
Climate
Derived climate information
No observed climate data available for this trial. Derived climate data is
determined from trial site location and national weather sources.
Birchip VIC
Rupanyup VIC
Woomelang VIC
Birchip VIC
CAUTION: Trial site locality unknown; Climate data sourced from Birchip Cropping Group office location
Rupanyup VIC
Woomelang VIC
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.
