Blackberry desease

Hello,
The last few weeks our blackberries show signs of desease. Some pictures:
http://zevv.nl/div/img_3032.jpg
http://zevv.nl/div/img_3033.jpg
Does somebody recognize this as a disease, infection, or maybe the result of extreme temperatures ?
Thank you,
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There are a few insects which might be the culprits, generally though, this is caused by lack of water...
WTW Herb Gardens Of New Jerusalem http://www.angelfire.com/ca/wtw
Gert wrote:

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I spray mine with this.......
http://www.ces.purdue.edu/vanderburgh/horticulture/toxaway/chlordane2.jpg

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