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What Pesticides Work Well to Control Tobacco Weather Fleck
Tobacco weather fleck is a physiological disease mainly caused by ozone, nitrogen compounds and other substances in the air, and is one of the major tobacco diseases worldwide. So what pesticide should be used for tobacco weather fleck? 1. What pesticide to use for tobacco weather fleck. Weather fleck is a physiological disease, and ordinary
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Symptom Identification and Control Methods of Carnation Necrotic Fleck Disease
[Pathogen] Carnation necrotic fleck virus (Carnationnecroticfiackvirus, CaNFU), thermal death point 40-45°C, in vitro survival period 2-4 days at 20°C. [Symptoms] Grayish-white, pale yellow, or purplish-red necrotic spots or streaks appear on the leaves, and the streaks are often parallel to the leaf veins. Older leaves are more severely affected, and the disease spreads upward. In severe cases, the entire leaf turns yellow and necrotic.
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