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What are White Spots on Turnip Leaves? Prevent White Rust on Turnip
06.06.2023 - 17:50 / gardenerspath.com / Helga George
How to Identify and Prevent White Rust on Turnip Albugo candidaWhite rust, caused by Albugo candida, afflicts turnip leaves and flowers and used to be considered a fungal disease.
The organism has been reclassified and is now no longer a fungus. It is a water mold – a relative of brown algae.
However, it looks and acts like a fungus! And it still infects turnips!
You will know if your turnip plant is infected if the bottoms of the leaves have white pustules that look like blisters, and the upper sides have faint yellow spots opposite the white ones.
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Rusts don’t kill their hosts, but they don’t do them any favors either. This type of rust is found throughout the world wherever turnips are grown.
As far as plant diseases go, white rust on turnips is not usually a serious disease. The leaves of infected plants look hideous, but the roots are typically fine.
Unfortunately, there are no fungicides registered in the US to control white rust on turnips. You will have to rely on preventative techniques.
We will walk you through the symptoms and life cycle of this disease and cultural methods to control it.
Symptoms of White Rust on TurnipsWhite rust has both local and systemic symptoms.
The local ones present as white pustules on the bottom of the leaves that look like chalky white dust and faint yellow lesions on top. In addition, smaller stems and floral parts can be infected.
This does not always happen, but If the infection goes systemic (throughout the whole plant), you will see flowers that grow abnormally, are distorted, and sterile.
These disturbed flowers are referred to as stagheads. These structures are typically
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