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Whole-cell cellular fatty acid (CFA) composition was utilized to determine if Bacillus thuringiensis serovar kurstaki (HD-1) larvicides produced by different manufacturers could be distinguished from each other and to determine whether these larvicides were distinguishable from isolates deposited in public collections. This study analyzed Biobit, Dipel, Foray, Thuricide, and the non HD-1 larvicides...
As part of an on-going program to identify natural products from plants with mosquitocidal activity, two acetylenic compounds were isolated from Cryptotaenia canadensis, a native North American umbellifer frequently encountered in moist woodlands. Fresh foliage, roots, and fruits were extracted with a hot methanol and water mixture and then dried. The extract was partitioned into chloroform and water,...
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