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Originally posted by DerbyCityLights
I live in Louisville Ky and travel to Grayson County about twice a month. Every Maple tree I have seen has been beautiful and healthy this year. Do you guys have some kind of infestation going on up in Canada?
Originally posted by kyred
reply to post by Iwinder
My maple trees, as well as all of my other types of trees, still have their green leaves. But, in years past, from time to time, the leaves turned early, and also didn't have their usual bright colors. And, yes, it was due to heat stress. Those times we had a drought. This summer, though, we've had plenty of rain. Of course it's August here, so the grass is brown and dying. Yay!! I don't have to mow as much. And, yes, it's normal, whether wet or not, for my grass to turn brown in August.
Originally posted by wayno
Here in the south-west tip of Ontario we're starting to get cooler nights which is normal for August, but the days are still hot. I noticed the other afternoon that even tho the temp wasn't all that high, the sun felt almost unbearably hot on the skin; to the point that I gave up doing any work outside in the sun. No it wasn't just an excuse,
Excess radiation along with the rays? That might explain the crispy brown leaves. My neighbour and I were talking just yesterday about how dry the ground is even with the rains we've been getting. It seems like something more than just regular sun is burning up and drying out the ground and vegetation.
Originally posted by momonmiko
reply to post by Iwinder
That's so ironic. I saw the same thing today in the morning while walking to the metro to get to work. In Montreal it's happening too, nothing is falling yet, but i saw the leaves and they look kind of burned... brown color... it's starting to worry me a lot...
Leaf Scorch:
Maple leaves often show a browning or drying at the outer margin of the leaf or in the areas between the veins in mid to late summer. The areas near the veins generally remain green; however in extreme cases the entire leaf may dry and fall prematurely. This may lead to scorch caused when leaves lose water more rapidly than moisture can be replaced from the soil. This can be caused by too little water in the soil or a physical restriction of the root.
The symptoms of leaf scorch usually appear during hot, dry, windy weather. Trees growing along streets or in areas where the roots are restricted seem to suffer most. Scorch itself seldom kills a tree, but may weaken it to the point where insects or disease can further injure it. Leaf scorch is best controlled by deep watering during dry periods.
See GreenShare Factsheet on leafscorch for more information.
Originally posted by relocator
Has anyone tried google for an answer....I found this
Leaf Scorch:
Maple leaves often show a browning or drying at the outer margin of the leaf or in the areas between the veins in mid to late summer. The areas near the veins generally remain green; however in extreme cases the entire leaf may dry and fall prematurely. This may lead to scorch caused when leaves lose water more rapidly than moisture can be replaced from the soil. This can be caused by too little water in the soil or a physical restriction of the root.
The symptoms of leaf scorch usually appear during hot, dry, windy weather. Trees growing along streets or in areas where the roots are restricted seem to suffer most. Scorch itself seldom kills a tree, but may weaken it to the point where insects or disease can further injure it. Leaf scorch is best controlled by deep watering during dry periods.
See GreenShare Factsheet on leafscorch for more information.
Please go here for more info:
www.uri.edu...
Originally posted by qonone
August was a strange month for the southern hemisphere, too. Even though it is still Winter we have reached the mid 20's (Celsius). We have had quite a severe snowstorm few weeks ago and last week Monday, after having a great warm weekend it snowed again. I am not used to the one day sunshine, walking in shorts & having a braai (barbeque) & then 18 hours later it snows. All i know is, it is not normal South African weather.
We had snow back in '81 and then in '07, and this year twice in 4 weeks . Hailstorms & thunderstorms in Winter? That just doesn't or used to happen in South Africa. This Winter gave us South Africans a taste of weather which told us climate change is upon us.
edit on 8/22/2011 by qonone because: spelling