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Old August 4th, 2009, 08:56 AM
worldharmony worldharmony is offline
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Why are my cucumber leaves turning yellow & brown?

My cucumber plant has produced some nice cucumbers, but soon after the first harvest, the leaves are getting large yellow splotches and then turn brown, wither and die. What is happening?
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Old August 4th, 2009, 10:54 AM
Durgan Durgan is offline
Durgan Brantford, ON Zone 5b
 
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Location: Ontario, Canada
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Re: Why are my cucumber leaves turning yellow & brown?

Quote:
Originally Posted by worldharmony View Post
My cucumber plant has produced some nice cucumbers, but soon after the first harvest, the leaves are getting large yellow splotches and then turn brown, wither and die. What is happening?
This may be your problem.

http://www.omafra.gov.on.ca/english/...y-mildew-a.htm

Introduction

Downy mildew is a serious disease of cucurbit crops grown in Ontario (Figure 1). It is caused by the fungus-like water mould Pseudoperonospora cubensis. Once established in a region, the disease can spread rapidly causing significant loss of fruit quality and yield.
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Old August 4th, 2009, 10:55 AM
Durgan Durgan is offline
Durgan Brantford, ON Zone 5b
 
Join Date: Feb 2005
Location: Ontario, Canada
Posts: 1,415
Re: Why are my cucumber leaves turning yellow & brown?

Quote:
Originally Posted by worldharmony View Post
My cucumber plant has produced some nice cucumbers, but soon after the first harvest, the leaves are getting large yellow splotches and then turn brown, wither and die. What is happening?
This may be your problem.

http://www.omafra.gov.on.ca/english/...y-mildew-a.htm

Introduction

Downy mildew is a serious disease of cucurbit crops grown in Ontario (Figure 1). It is caused by the fungus-like water mould Pseudoperonospora cubensis. Once established in a region, the disease can spread rapidly causing significant loss of fruit quality and yield.
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