H.R. 2943 possibly affecting rose rosette research?????????????????
henry_kuska
8 years ago
last modified: 8 years ago
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8 years agodublinbay z6 (KS)
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Rose Rosette Disease at Local Nursery
Comments (36)Buford's photos could both be herbicide damage. At present there is not a simple field test to determine if a rose has RRV or does not have RRV. Excessive thorns is thought to be a good indicator of RRV infection but lack of excessive thorns does not rule out RRV. Buford's photos do not show excessive thorns, and the one that he feels is RRV is similar to one posted for herbicide damage by Plant Pathology Department Extension Service at the University of Arkansas. http://plantpathology.uark.edu/Number5-2009.pdf From Ann Peck's web book: "There are no laboratory tests to confirm a diagnosis of RRD; graft transmission tests can confirm the disease when the recipient plant (R. multiflora) develops RRD. A lack of transmission does not prove lack of the disease, just lack of transmission. Dr. Jim Amrine (personnal communication) suggests that graft transmission tests are more often successful in spring than in other seasons. This, to me, corresponds to the time that multiflora puts on most of its new growth (when its growth isn't affected by RRD)." -------------------------------- H. Kuska comment: Until a simple lab test is developed, we simply do not know from a single field examination in some/many cases. There are too many variables: type of herbicide, concentration of herbicide, rose variety, weather, etc. to say for certain from a single observarion in all cases this plant definitely has RRV, this one definitely has herbicide damage. Here is a link that might be useful: Ann Peck's chapter Recognizing Rose Rosette...See MoreNew Congressional bill to prevent research on RRD prevention
Comments (26)This is an example of some very recent research from mainland China: https://www.sciencedirect.com/science/article/pii/S0048357517305916 They report that a chemical can be used to activate the plant defense system against tobacco mosaic virus (TMV). In the full paper they state the following: "Acknowledgment The work was supported financially by the National Natural Science Foundation of China (No. 31160374), the Scientific and Technological Planning Project of Guizhou (No. QKH-JC [2017]1141), and initial funding of PhD (No. YBH-J [2016-7]). " H. Kuska comment: Please note that they are producing a new PhD with their funding. ------------------------------------------------------------- This is an example of how the University of Florida is planning on training a graduate student in the use of systemic acquired resistance to control rose rose virus. "The graduate student will study the use of systemic acquired resistance inducer in synergy with predatory mites to control the spread of the disease. The student will also investigate plant, vector, and virus interactions as well as the changes in rose physiology due to RRV infection and systemic acquired resistance inducer." https://www.entsoc.org/graduate-student-assistantship-0...See MoreQuestion about rose rosette virus
Comments (27)My sympathies as I have also lost favorite roses to this horrible disease. This weekend I was at the District Conference for the ARS and there was much talk about RRD and other pests and diseases. The term we loved was 'be a tall shadow in your garden' meaning be a presence there to look over everything. We all get busy, lazy, sick, hurt and can't be out there all the time. But when we can we need to be aware of what it looks like normally so we know when something is not right. I was able to save one bush by noticing some weird growth at the tip of a cane, which I cut out. 3 years later, and so far no more signs of RRD on that bush. This fall I found some suspicious growth on another rose, so I cut out that cane. Time will tell. If Little Mischief looks ok, then you can plant next to it. I would think all of the mites are dead or dormant at this time of year. But watch Little Mischief very carefully when it comes out of dormancy in the spring. That is when RRD can show up....See MoreFlorida rose rosette immune system research
Comments (4)Hydrogen peroxide and aspirin are known (from reviewed scientific literature) separate immune system boosters against some plant viruses. I am not aware of any literature concerning mixing them. Concerning concentration, the person in the thread I linked to stated: " I had been giving each affected plant the equivalent of 1 regular 325 mg aspirin in 1 gl water monthly except for the worst cases where I doubled the aspirin." From memory I think there was at least one other thread that discussed the limited solubility of aspirin in water. Possibility the actual effective concentration used is simply a saturated solution. http://www.gardenweb.com/gardenweb/query/aspirin/topic=roses ASM is Actigard and is described in the following link: http://www.opvg.org/Uploads/UserFiles/file/Trueman~Actigard.pdf...See MoreBuford_NE_GA_7A
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