Hi Vincent,

We've found that concentration is potentially more damaging with copper than higher volumes as the both 50gal and 100gal get the same amount of copper. It's like taking powdered aspirin with half the recommended amount of water. Also, many labels in the US actually require that certain products be applied in a minimum of 100 gal/A. If were potentially injurious to apply at 100 gal/A, I assure you that no company would include any such statements on label. Actually, they would, without a doubt, put statements saying that the product should not be applied at 100 gal/A or injury would occur. Excess water seems to just roll off the trees in our experiments.


Best,
Kerik
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


_______________________________________________
apple-crop mailing list
apple-crop@virtualorchard.com
http://virtualorchard.com/mailman/listinfo/apple-crop

_______________________________________________
apple-crop mailing list
apple-crop@virtualorchard.com <mailto:apple-crop@virtualorchard.com>
http://virtualorchard.com/mailman/listinfo/apple-crop


_______________________________________________
apple-crop mailing list
apple-crop@virtualorchard.com
http://virtualorchard.com/mailman/listinfo/apple-crop


--
Kerik D.  Cox, Ph.D., Associate Professor
Plant Pathology and Plant-Microbe Biology Section
School of Integrative Plant Science
Cornell University
221 Barton Lab
NYSAES
630 West North Street           
Geneva, NY 14456 USA    

E-mail: kd...@cornell.edu
Faculty Office: (315) 787-2401
Fruit Pathology Lab: (315) 787-2402     
FAX: (315) 787-2389

_______________________________________________
apple-crop mailing list
apple-crop@virtualorchard.com
http://virtualorchard.com/mailman/listinfo/apple-crop

Reply via email to