Re: [apple-crop] apple-crop Digest, Vol 56, Issue 8

2015-08-18 Thread lee elliott
Just my personal experience, dont know if any studies made, I think a lot of the problem is copper deficiancy, after doing leaf analysis, my copper levels were in the bottom of the scale, alsso in soil analysis, added Kocide 3000 to dormant spray, and small amount (2oz per 100 gal) in spring

Re: [apple-crop] apple-crop Digest, Vol 56, Issue 8

2015-08-18 Thread Vincent Philion
Hi! I’m not sure I understand: Just my personal experience, dont know if any studies made, I think a lot of the problem is copper deficiancy, Your hypothesis is that copper deficiency in trees make them more prone to get fire blight (FB)? Your dormant/Spring sprays of copper knock down

Re: [apple-crop] apple-crop Digest, Vol 56, Issue 8

2015-08-18 Thread Vincent Philion
Hi Dave, your answer came in as I was pushing the send button ;-) We basically wrote the same thing! Unfortunately, none of the available models can predict whether or not inoculum is present in any given orchard, We’ve just completed a 4 yr trial of monitoring bacteria during bloom using

Re: [apple-crop] apple-crop Digest, Vol 56, Issue 8

2015-08-18 Thread David A. Rosenberger
Strep is extremely stable if it is kept dry and out of direct light (e.g., in a closed cardboard drum or foil package). It does break down in sunlight. I don’t know if other components in the formulations might “age out” and become less effective (e.g., less surfactant activity), but the strep

Re: [apple-crop] Looking for comments on fire blight management

2015-08-18 Thread Smith, Timothy J
Re: virulence of E. amylovora. Here is another good (in depth) article. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4490474/ best regards, Tim Smith From: apple-crop-boun...@virtualorchard.net [mailto:apple-crop-boun...@virtualorchard.net] On Behalf Of Smith, Timothy J Sent: Tuesday, August

Re: [apple-crop] apple-crop Digest, Vol 56, Issue 8

2015-08-18 Thread Fleming, William
Lee, can't help you on reading your date but we had a 35 lb. drum of strep dated 1972 that I didn't trust. Had the guys in the lab plate it out, it killed all the bacteria they introduced it to. The drum had been stored in a cool dry place Bill Fleming Montana State University Western Ag

Re: [apple-crop] Looking for comments on fire blight management

2015-08-18 Thread Smith, Timothy J
Re: The bacteria (in the hypanthium) need to thrive in the nectary in order to reach numbers sufficient to switch on their virulence. Once this is accomplished you have an infection. Do you have a good reference for me on this specific topic? When I reviewed the literature, I only found a few

Re: [apple-crop] Looking for comments on fire blight management

2015-08-18 Thread Vincent Philion
Hello Tim! thank you for the article. The last time I reviewed this, quorom sensing was not described for E. amylovora. Vincent Le 18 août 2015 à 17:23, Smith, Timothy J smit...@wsu.edumailto:smit...@wsu.edu a écrit : Re: virulence of E. amylovora. Here is another good (in depth) article.