Verticillium wilt, caused by Verticillium albo-atrum, does not kill the plant, however,

it does disable the plant where it can no longer effectively take up nutrients. Symptoms do not

become apparent until fruit set. Symptoms consist of diurnal wilting, where the plant regains

turgor during the evening hours, and marginal yellowing.of the leaves (Florida Plant Disease

Control Guide, 1993).

 Cultural practices for management of verticillium wilt include use of resistant or tolerant

varieties. It is recommended to rotate the crop with a non-susceptible crop and avoid

overwatering. It is also recommended to not plant on land with a known history of Verticillium

wilt and to practice sanitation methods, including removal or plowing under of plant debris after

harvest and disinfecting stakes used during crop production. (Florida Plant Disease Control

Guide, 1993).

 Table 4.5 contains a list of chemicals that can be used to control Verticillium wilt. The

principal chemicals are chloropicrin, methyl bromide, and Vapam.



Table 4.5. Chemicals for the control of verticillium wilt.

 Common Name Trade Name
 Chloropicrin 96.5 Chlor-O-pic/Picfume
 Methyl Bromide 68 Brom-O-Sol/Brozone
 Methyl Bromide + Chloropicrin 67:32 MC-33/Terr-O-Gas 67
 Metam Sodium 32.7 Vapam/Fume V

 NOTE: For rate, use, and application to seed bed and field, refer to pp 440-461 of the Florida
 Plant Disease Control Guide, 1993.