Here’s an updated version of 2011 spray guide. It is essentially the same as the one went out with the Viticulture Notes. Typos, some minor items, and grammatical mistakes were… Read more
It is hard to believe, but it has been almost one year since our horticulturist, Dr. Rongcai Yuan passed away. We will hold a one-year memorial event on April 14th… Read more
Finally, here’s the 2011 version of fungicide spray guide for VA wine grape (bearing vines). I hope it will help you come up with your spray schedule for 2011. Please… Read more
Here comes the 2011 version of fungicide spray guide for non-bearing wine grapes. The guide for bearing vines will be coming very soon! Read more
If you grow Concord and Noiret grape, please be advised that Revus Top (mandipropamid + difenoconazole from Syngenta) may cause phytotoxicity on these variety. The symptoms are light yellow colored… Read more
This page from Michigan State University Extension describes the temperature threshold to have frost/cold injury on Concord vines. Hopefully we won’t receive any frost at this point. Also, I updated… Read more
It is sad to share that a tree fruit horticulturist at Winchester AREC, Dr. Rongcai Yuan passed away 4/14/10. For his obituary, please visit this link. Read more
Our Dr. Keith Yoder just announced that he has a new blog about his disease updates on tree fruits. If you are curious about diseases on apples, pears, and other… Read more
Tony sent out March-April issue of Viticulture Notes yesterday. Along with the newsletter, he sent my fungicide spray guideline for 2010. If you haven’t received it, please let me know… Read more
2010 January – February issue of Viticulture Notes is published. There is a section of grape pathology too. Viticulture Notes and other seasonal information is distributed from our viticulturist Dr.… Read more