Mycosphaerella blight of Beans
Mycosphaerella cruenta
On infected leaves (especially those more mature) look for brown or rust-coloured lesions that vary from circular to angular, are 2-10 mm, and may coalesce. Lesions may have a grey centre with a slightly reddish border. Conidia develop at the centre on short conidiophores. Severely affected leaves become chlorotic. Lesions may dry and portions may fall out, giving the leaf a shot-hole appearance. Lesions and blemishes may occur on branches, stems and pods.
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Plant Protection Products
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