At the beginning of the onset of symptoms, the leaves were dark green and light green with inlaid mosaics, and soon the plants were wilted and necrotic or apical. Some diseased plants did not show significant mosaics, the plants were short, and the leaves became yellow and easy to fall.
The pathogen is broad bean wilt virus abbreviated as BBWV, which is called broad bean wilt virus. The virus particle is spherical, with a diameter of 25nm and a wide host range. It can infect 21 species of plants such as Solanaceae, Licoraceae, and Cruciferae. The dilution limit is 10,000 to 100,000 times, and the passivation temperature is 60 to 70°C. 6 days. Transmission routes and disease conditions The field is mainly transmitted by locusts, which can be contacted and rubbed through agricultural operations. Poor management conditions, drought, and the occurrence of aphids have become more serious.
Control methods (1) Strengthen field management and increase plant resistance to disease. (2) Control locusts early to prevent the spread of diseases. (3) In the initial stage of onset, spray 1.5% Elimination E Emulsion 1000 times or 0.5% Mushroom Proteoglycan Emulsion 300 times, 20% Virus A WP 500 times, and 83 Immune Reagent 100 times. Every 10 days or so, control 1 or 2 times.
Cas 183208-35-7,Vemurafenib Intermediates,5-Bromo-7-Azaindole
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