Whatís difference between early blight and late blight? - The Combine Forum
 
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post #1 of 1 (permalink) Old 09-18-2019, 02:34 AM Thread Starter
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Whatís difference between early blight and late blight?

Early blight and late blight are the most common diseases on tomato & potato. They usually take huge losses to farmers. Although the names of the two diseases are the only one-word difference, some growers do not know exactly about the difference between early blight and late blight.

First, we need to how to recognize their symptoms.

Symptoms difference between early blight & late blight

Symptoms

Early Blight

Symptoms of early disease first appear in the base of the affected plant, with roughly round brown spots on the leaves and stems.

As the lesions expand, the spots appear yellow halos. Lesions larger than 10 mm in diameter usually have dark concentric rings.

Eventually, multiple spots on a single leaf will merge, resulting in extensive destruction of the leaf tissue. Early disease can cause the lower leaves to be completely deleaved and even lead to the death of infected plants.

Fruit spots rot at the stem and radiate from the attachment area between the flower and the fruit. The color of spots are usually brown to black, Itís sunken and has a distinct concentric ring.



Late blight

The most obvious early signs of late blight are brown spots or disease spots on plant stems.

They expand rapidly and produce white fungi growth in wet conditions. Soft rot causes the stem to collapse quickly, turning into dark brown.

In wet conditions, the pathogen produces spores on the surface of the infected tissue, and the resulting white spores can be seen forming at the damaged edge of the surface the leafís blade back.




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