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question about apple cedar rust
Xref: 127.0.0.1 sci.bio.botany:17612
10 Feb 2003 08:37:39 -0800 Kevin Eanes wrote: Archimedes, I did some internet research on the topic, and the answer is yes, if all cedar trees in a one-mile or two-mile radius of the apple trees are removed, the fungus' life cycle will be interrupted and it will go away in about two years. The fungus is gymnosporangium juniperi-virginianae. It has a two-year life cycle. The fungus passes part of its life on the cedar and part of its life on the apple. By removing the cedars, the life cycle will be interrupted and the fungus will eventually go away. Yes, I think I will remove all the cedars. Other recommended steps include use of disease-resistant apples, and use of fungicide. I am under the impression that you would prefer not to use fungicide. If you have the option to plant a different type of apple tree, Golden Delicious and Delicious are more resistant, and ornamental crabapples and Jonathans are more susceptible. A nursery could provide more information about specific resistant strains. Best Regards, -Kevin I am running an experiment Kevin of a pet-theory of mine. I believe the maximum best conditions of an apple-fruit orchard is to plant the trees 20 feet apart but to have some pine or spruce tree every other one. The evergreen makes the soil of the best proper PH for the nearby fruit trees. I have a case example of this now wherein my best pear tree is smack up against a blue spruce. I believe the finest fruit orchard would be one in which evergreens (not cedar of course) are alongside fruittrees. The evergreens maintain the proper soil PH. Evidence: I noticed that oak tree volunteers grow best in a evergreen forest than in any other type of forest. Shame about the cedar because that is the best growing evergreen for this part of the country and the only one I have seen that volunteers. I have never seen a pine or spruce volunteer here. Archimedes Plutonium, whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies |
#2
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question about apple cedar rust
Archimedes Plutonium wrote in message ...
I wonder if the apple cedar rust fungus is permanent to a apple tree if it catches it once. Or whether, if all cedar trees for a distance are removed, then will the apple trees formerly infected become uninfected with time. I understand the fungus has a two year cycle. To repeat my question, if an apple tree has cedar rust, is it permanent or can it be eliminated by elimination of cedar trees. Archimedes Plutonium, whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies Archimedes, I did some internet research on the topic, and the answer is yes, if all cedar trees in a one-mile or two-mile radius of the apple trees are removed, the fungus' life cycle will be interrupted and it will go away in about two years. The fungus is gymnosporangium juniperi-virginianae. It has a two-year life cycle. The fungus passes part of its life on the cedar and part of its life on the apple. By removing the cedars, the life cycle will be interrupted and the fungus will eventually go away. Other recommended steps include use of disease-resistant apples, and use of fungicide. I am under the impression that you would prefer not to use fungicide. If you have the option to plant a different type of apple tree, Golden Delicious and Delicious are more resistant, and ornamental crabapples and Jonathans are more susceptible. A nursery could provide more information about specific resistant strains. Best Regards, -Kevin |
#3
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question about apple cedar rust
10 Feb 2003 08:37:39 -0800 Kevin Eanes wrote:
Archimedes, I did some internet research on the topic, and the answer is yes, if all cedar trees in a one-mile or two-mile radius of the apple trees are removed, the fungus' life cycle will be interrupted and it will go away in about two years. The fungus is gymnosporangium juniperi-virginianae. It has a two-year life cycle. The fungus passes part of its life on the cedar and part of its life on the apple. By removing the cedars, the life cycle will be interrupted and the fungus will eventually go away. Yes, I think I will remove all the cedars. Other recommended steps include use of disease-resistant apples, and use of fungicide. I am under the impression that you would prefer not to use fungicide. If you have the option to plant a different type of apple tree, Golden Delicious and Delicious are more resistant, and ornamental crabapples and Jonathans are more susceptible. A nursery could provide more information about specific resistant strains. Best Regards, -Kevin I am running an experiment Kevin of a pet-theory of mine. I believe the maximum best conditions of an apple-fruit orchard is to plant the trees 20 feet apart but to have some pine or spruce tree every other one. The evergreen makes the soil of the best proper PH for the nearby fruit trees. I have a case example of this now wherein my best pear tree is smack up against a blue spruce. I believe the finest fruit orchard would be one in which evergreens (not cedar of course) are alongside fruittrees. The evergreens maintain the proper soil PH. Evidence: I noticed that oak tree volunteers grow best in a evergreen forest than in any other type of forest. Shame about the cedar because that is the best growing evergreen for this part of the country and the only one I have seen that volunteers. I have never seen a pine or spruce volunteer here. Archimedes Plutonium, whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies |
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