Late Blight control in tomatoes: The loss of Mancozeb

ON Vegetables
July 30, 2018
By ON Vegetables
The Pest Management Regulatory Agency recently announced that it will be cancelling the use of the group M3 chemicals mancozeb and metiram in a wide range of crops, including field tomatoes.

In 2020 products like Manzate, Penncozeb, Dithane and Polyram will no longer be available for sale and in 2021 use will be banned completely. This will ultimately have an effect on how we control diseases, including anthracnose, early blight and, most importantly, late blight. Although mancozeb is currently an important player in fungicide programs, tomato growers do have other options available.

For best control it is always good to start with preventative or protectant fungicides once environmental conditions are conducive to disease development and before symptoms appear. | READ MORE

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