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
