Controlling powdery mildew, mealybugs and scale is a serious problem for many grape growers, but with BIOPEST® they now have the option of using one product to control all.
SACOA’s BIOPEST® is a highly refined iso-paraffinic oil with biorational pesticidal properties, which make it different to other products which use synthetic chemistry.
BIOPEST® is also an effective stand-alone fungicide across a range of crops (i.e. powdery mildew in grapes) making it an organically certified alternative to sulphur.
BIOPEST® is similar to sulphur in that it is a protectant fungicide, but has the advantage of working effectively in cool weather, controls vine scale and mealybug and does not have the unpleasant odour of sulphur.
It’s a great product for growers looking to implement IPM programs as it is very soft on predatory insects. With this in mind, SACOA recently obtained certification with the Biological Farmers Association for the use of BIOPEST® in organic viticulture.
BIOPEST® is registered for use up to E-L stage 31 (berries are pea size, formerly referred to as bunch closure), however trial work conducted with the Australian Wine Research Institute showed there were no significant impacts on winemaking or the sensory characteristics of resultant wine when BIOPEST® was used at twice the recommended rate up to one day before harvest.
BIOPEST® is not subject to resistance so there is no need to limit product applications as with some other chemical groups.
BIOPEST® is not a magic bullet and will only control diseases and pests when used correctly, particularly targeting the right pest stage. As BIOPEST® is a protective product, thorough application is essential and higher water rates will definitely assist with achieving good coverage. Spray intervals will also need to be tightened if disease pressure is high.
Caution is also needed when alternating between BIOPEST® and sulphur sprays with an interval of three weeks between applications preferred. With no obvious symptoms the crop will continue to grow but will have a reduced yield of up to 40%.
WA Department of Agriculture and Food
AHA Viticulture – SW WA April 2014
Learmonth, S (2005) GWRDC RT04/06-02
Margarey & Hayes – Loxton 2011
University of California http://www.ipm.ucdavis.edu/PMG/GARDEN/FRUIT/PESTS/LIFECYCLE/lcgrmealy.html
Disclaimer and Copyright
This document should act as a guide only and no purchase or usage decisions should be made based on the information provided without obtaining independent, expert advice. SACOA and contributors do not necessarily recommend or endorse any products or manufacturers referred to. SACOA Pty Ltd will not be liable for any loss, damage, cost or expense incurred or arising by reason of any person using or relying on the information contained in this document. More information is available from SACOA via sacoa.com.au or 08 9386 7666, or by contacting your local reseller.
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