I'm certainly not an expert! The cueva label says "May cause russeting of susceptible apple varieties. Do not exceed the 1.0 gallon of product/ 100 gallons water use rate." When Kerik started me on this program, he said "we never get fruit finish injury. However, depending on your spray volume, you could have a different experience. We use 100 gal/A in our block."


On 5/1/2017 7:13 AM, Vincent Philion wrote:
I hope you meant a Low volume of water. High volume = slow drying = russeting. This is very easy to demonstrate. We do it as a "control" in plots. We always have copper induced russeting at 500 L/ha and none at 225 L/ha.

Vincent Philion, agr., M.Sc.

Le 1 mai 2017 à 08:05, Two Onion Farm <far...@twoonionfarm.com <mailto:far...@twoonionfarm.com>> a écrit :

Kerik Cox at Cornell has done trials with this combination for cedar apple rust, summer fungal diseases, and fireblight and has had good results.

We started using the combination in our organic orchard last year and did not see any problems with fruit russeting. Kerik did caution me to use a high volume of water to avoid toxicity from the copper (100 gallons per acre vs our normal 50 in our high density orchard). We have used 2 qts/acre Cueva + 2 lbs/acre 2ble nickel.

Kerik also suggested that the 2ble nickel might be unnecessary and that cueva alone might be sufficient, but that may be theoretical at this point. The 2ble nickel does add a lot of cost.

Chris

Chris & Juli McGuire
Two Onion Farm
www.twoonionfarm.com <http://www.twoonionfarm.com/>
19638 Cottage Inn Road
Belmont, WI 53510
(608) 762-5335
far...@twoonionfarm.com <mailto:far...@twoonionfarm.com>


On 5/1/2017 6:43 AM, maurice tougas wrote:
A couple years ago I recall discussion regarding the use of Cueva/Double Nickel combination as an alternative and/or rotation with strep for fireblight management. Is anyone aware of further research regarding this combination esp as to regards to crop safety and efficacy ?

Mo Tougas

--
Maurice Tougas
Tougas Family Farm
Northborough,MA 01532
508-450-0844


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