Confused about virus and airborne transmission
6 years ago
last modified: 6 years ago
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- 6 years ago
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New University of Georgia Rose Rosette Virus article
Comments (19)Henry, I've talked with Alma and her major professor about her thesis. It's one of those written as chapters suitable for publication. Both told me that the two (of four total) that deal with RRD (then) are the two published in Weed Science with several co-authors. Can your library access Weed Science? If not, let me know. Cutting off an infected cane HAS to be done before the virus moves down into the roots (assuming stem meristem infection) and back out. I've saved several roses from different classes in my yard by catching the problem when only a single leaf node (or three on one side of the cane) were infected in fall. I saved an American Pillar in spring when it was out on a cane about ten feet from the roots. I've never saved a HT, and I've only seen RRD on HTs in spring. That may have something to do with the transmission times in fall to late fall. The one thing that (I don't think) has been addressed is what it is about RRD that ultimately kills the host rose. Epstein and Hill reported a lack of sugar to starch conversion in long infected canes. The odd thing that I watched this year was that some roses I've watched for four years finally got down to scrawney, skinny leaves often with PM and then they died in May (which was not a time of drought or too much rain- just really nice weather.) We know from Glen Viehmeyer and Percy Wright that both saw RRD overwinter in the colder parts of Canada. I don't think we know much about temperature and the whole batch of EMARviruses....See MoreSources for Virus Free Canna
Comments (16)Newbie in nj, Many cannas do quite well in containers. My intentions were directed to those who live in areas that generally do not have to lift and winter store. Pot growing simply requires more attention and care and the plant can become root bound. The taller varieties often get blown over and some find the need to anchor their pots. Our large flowered cannas (garden hybrids) usually do not attract humming birds etc as well as the smaller flowered varieties. Some of the recent post listed ÂRobert Kemp (canna compacta) as being a good choice for both the flower and bird attractant. The larger flowered dwarf cultivars are excellent choices for containers simply because they tend to grow much shorter and bloom somewhat sooner. Relative speaking of course! The ÂFuturity Series of dwarf cannas are a group of shorter growing cultivars that would be ok in pot culture. There are a number of others. I definitely disagree with the "crowded" reference. I think maybe there was a communication misunderstanding. Overcrowding in containers or in beds is not a good situation for the plants. Just for the sake of discussion; dwarf varieties need roughly two to three feet between plants; the really tall varieties may require three to four feet between individual plants growing with plenty of sun. These suggestions are simply rough guidelines and can be adjusted to your situation. Containers can be started side by side and adjusted as the plant matures. This is not a good option for plants in established beds! By the way, Old House Gardens called me not long ago and they attempt to give good information and provide some interesting historic canna info. Regards, Kent...See Moreis mosaic virus carried in all fig trees?
Comments (22)Like everybody else, I don't like this fig mosaic virus. It's my wish to have trees that don't have this disease. Once you start collecting, there's a huge risk you'll come across a diseased cutting/fig tree. If you are selling or trading cuttings, don't sell, don't trade 'clones' that would carry this FMV into other people's back yards, so to speak. Not all trees have this FMV. There are some countries where it's very hard to spot a tree with FMV symptoms. It's not because they are asymptomatic. It's because the infection is not there.Or perhaps some of the viruses that belong to this collection of viruses that is known as FMV, are not present. And the 'signs' don't show. The truth is, research on this subject is in its infancy. http://oregonstate.edu/dept/nurspest/fig_masaic_virus.htm This post was edited by jesj1852 on Wed, May 8, 13 at 16:24...See MoreQuestion about Rose Mosaic Virus
Comments (51)comtessedelacouche (10b S.Australia: hotdryMedclimate) I started each post to you with the following qualifier: "since you are from Australia, you may find these links of use:" Please notice the use of "you may find". I suggest that if you find something in the links that you are interested in obtaining addition information / viewpoints about, that you start a new thread on that point. If your rose growing skills are anything like what I saw illustrated in the annual, congratulations!...See More- 6 years ago
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