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Thu, Dec 6, 12 at 8:53
| It looks like white pine blister rust is rearing its ugly head again. The disease has recently been found on some supposedly resistant varieties. There is now a moratorium on planting currants and gooseberries in some New England states (NH and maybe others) and there may be more restrictions coming down the pipe. See article below.. Scott |
Here is a link that might be useful: NH Ribes Moratorium
Follow-Up Postings:
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| This is bad news since I love currants, gooseberries, and healthy pine trees. |
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| My understanding of the problem is that the fungal biology of the white pine blister rust needs to be better understood. Perhaps the breakdown of resistance is due to the presence of new fungal strains. Plant breeding efforts will need to accompany better knowledge of the white pine blister rust organism to create new resistant cultivars of pine, currants, and gooseberries. I will monitor my presence plantings of currants and gooseberries and will destroy the plants and the first site of any fungal infection. There are many beautiful and stately pine trees in close proximity that I want to see stay healthy for many decades into the future. |
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| Jostaberries are said to be resistant to this rust. I did not see any mention of them in the article. Hopefully they're not included. |
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- Posted by scottfsmith 6B-7A-MD (My Page) on Thu, Dec 6, 12 at 14:04
| Jostaberries are ribes so they are included unfortunately. The whole problem is that in this survey they found rust on resistant varieties. I have never seen any rust on my ribes, but I will continue to look carefully. Scott |
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| It seems odd that this fungus is restricted to Ribes and Pinus which are very different from each other. I wonder why other plants are not known to be hosts. |
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- Posted by harvestman 6 (My Page) on Sat, Dec 15, 12 at 22:16
| As I recall, the restrictions in NY were based largely on a thriving white pine lumber industry that has since been reduced to economic insignificance. I believe it is still an important industry in NH. |
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- Posted by fusion_power 7b (My Page) on Sun, Dec 16, 12 at 13:20
| The relationship has other parallels. Look at Cedar-Apple rust. DarJones |
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