Blue mould
Peronospora hyoscyami f. sp. tabacina
The pathogen typically causes localized lesions on tobacco leaves that appear as single, or groups of, yellow spots that often coalesce to form light-brown necrotic areas. Some of the leaves exhibit grey to bluish downy mould on their lower surfaces. Diseased leaves can become twisted, such that the lower surfaces turn upwards. In such cases, the bluish colour of the diseased plants becomes quite conspicuous, especially under moist conditions when sporulation is abundant. Hence the name of the disease: tobacco blue mould.
Pesticides
Antracol
intensity: ★★★
Axiom MZ 720
intensity: ★★★
Dithane Rainshield Neo Tec
intensity: ★★★
Frenta 750 WG
intensity: ★★★
Manzate DF
intensity: ★★★
Penncozeb
intensity: ★★★
Penncozeb 750 DF
intensity: ★★★
Polyram DF
intensity: ★★★
Ridomil Gold 480 EC
intensity: ★★★
Ridomil Gold 480 SL
intensity: ★★★
Ridomil Gold MZ WG
intensity: ★★★
Rotam Milor 720 WP
intensity: ★★★
Rotam Winner Mancozeb WP
intensity: ★★★
Scholar
intensity: ★★★
Tecto SC
intensity: ★★★
Unizeb Disperss 750 DF
intensity: ★★★
Zee-Mil 250 WP Systemic
intensity: ★★★
Zeemil 720 WG Systemic and Protective
intensity: ★★★
Zeemil MZB 720 WP Systemic and Protective
intensity: ★★★
Arysta LifeScience Mancozeb 750 WG
intensity: N/A
Barmac Zineb
intensity: N/A
Manco 750 WG
intensity: N/A
Manzeb
intensity: N/A
Maxyl
intensity: N/A
Medley Mz
intensity: N/A
Metal-Man Mz 720
intensity: N/A
Panoctine
intensity: N/A