Physical, chemical and biological behaviour of fumigants on cottonseed.

Fumigation is required to protect cottonseed in storage and pre-shipment from insect pests and/or microorganisms. Fumigation of cottonseed with carbon disulphide (CS), carbonyl sulphide (COS), ethanedinitrile (CN), ethyl formate (EF), methyl bromide (MB) and phosphine (PH) showed that >85% of the fumigants disappeared within 5 h of exposure. COS maintained >20 mg L for 24 h.