Table 4.8. Chemicals for control of damping-off. Common Name Chloropicrin 96.5 Methyl Bromide 98-100 Methyl Bromide 68 Methyl Bromide + Chloropicrin 67:32 Metam Sodium 32.7 Metalaxyl 25.1 Metalaxyl 25. Trade Name Chlor-O-Pic/Picfume Brom-O-Gas/MC-2R Terr-O-Gas 98 or 100 Brom-O-Sol/Brozone MC-33/Terr-O-Gas 67 Vapam/Fume V Ridomil Subdue II NOTE: For rate, use, and application to seed bed and field, refer to pp. 368-371 of the Florida Plant Disease Control Guide, 1993. Bacterial wilt, caused by Pseudomonas solanacearum, can express symptoms such as dark discoloration near ground level. The plant will appear healthy with little or no signs of yellowing prior to death. Cultural practices for control of bacterial wilt include avoiding crop land with known disease infestation, fumigating land where seedbeds or fields are placed, and rotating with crops that are not considered susceptible to bacterial wilt such as grass, legumes, or cucurbits (Florida Plant Disease Control Guide, 1993). Pre-plant fumigation with methyl bromide using various formulations containing chloropicrin is also effective for control when the disease is present in the soil at the time of treatment. 68