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Grape Disease Control & Pristine

02 August 2013

Blog thread in from Weston Hazelwood

Hi Folk

Pristine has been on the market in grapes for a few years controlling the 3 major diseases, Botrytis, Powdery Mildew and Downy Mildew.

In a previous life I supervised a large 400ha grape growing operation being responsible for disease control and assisting in day to day running of these vineyards. If one got a problem in a block that size it was a nightmare, so we had to work on preventing problems occurring. This made us pro-active instead of re-active, prevention is better than any cure.

In those days we used Euparen; Shirlan for Botrytis control, then came along Scala first, and then Switch both with a huge increase in performance against Botrytis.

Later Pristine appeared with the same high performance against Botrytis, but putting on my grower hat, I see it also had great performance against Powdery and Downey Mildew, not just a side effect but true control.

Also Pristine contains 2 actives one being pyraclostrobin, like all applications of Strobilurin chemistry to crops, there is a health benefit to the plants.

So some questions for discussion?

Have you had good Powdery Mildew control?

Have you had good Downy Mildew control?

Have you had good Botrytis control? 

Have you noticed your vines / plants looking better?


PristineGrapes


Comments 3

  • Weston Hazelwood 20 Aug 2013

    In Bayview, Hawkes Bay today,  grapes starting to move so need to be completing pruning. If canes have carry over powdery mildew (which I saw this morning) one needs to be stringent with your  spray program from the beginning.  
  • Grant Hagerty 30 Aug 2013

    Saw photos of grape vines showing significant buds moving in Blenheim.  And Weston was woken by helicopters at 4 am in Blenheim this morning thanks to Jack Frost visiting

    • Weston Hazelwood 11 Sep 2013

      I think the helicopter was frost fighting the cherry crop

      Sulphur, while at the Romeo Bragato conference I had a few discussion regarding different sulphur on the market today

      In a past life a few years back I supervised a large vineyard complex, at the time we were using a sulphur which caused blocked filters and nozzles and always ended up with residues in the bottom of the spray tank. One season we changed onto this product Kumulus DF.All the issued went away and we used nothing else going forward.

      I have since learnt the reason why  the issues went away.The Kumulus formulation is a DF, this is a porous hollow granule and when it is put into water the water enters the granule and explodes, giving rapid and complete dispersion. You will never see this happening as it all happens in your spray tank

      The other feature about Kumulus I like is the multi particle size distribution, giving a vapour phase, a protectant phase, and persistant phase. The vapour good for rapid action and getting to places you may have missed with your sprayer and the other phases speak for themselves

      Kumulus DF contains a spreader/sticker,acts as a plant nutrient and has no dust. The vacum packed bags keep it fresh and dosen't smell out your shed.   

      So all sulphurs arent the same on the market today one usually gets what you pay for, I reckon Kumulus DF  is the best of the bunch 

       

       

 
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