to occur as a problem weed. In the cultivation of Wisconsin 
tobacco, the tops of the plants are broken off at the time flowers 
begin to open. Subsequent growth from buds at leaf axils is 
prevented chemically, or the shoots are removed by hand. Thus no 
seed is produced on plants grown for their leaves. It is possible 
that seed might be produced on "suckers" which sprout from 
stumps left after harvest if a killing frost does not occur until late 
in the fall. In the event that a killing frost has not occurred by 
the time that suckers begin to initiate flowering, the plants will 
be killed by use of herbicides. 
5A. 10 Pilfering from the Experimental Plot 
Pilfering from experimental plots has been known to occur in 
conventional plant breeding trials. It seems unlikely that this will 
occur in the present trial for the following reasons: 
a. The experimental plants have no visible quality that would 
suggest to a grower that they would be more desirable than 
commercially available varieties. In appearance in the 
greenhouse they are not detectably different from the 
unaltered Havana 425 parent. It is, of course, much to the 
advantage of Agracetus that none of the engineered tobacco 
fall into unauthorized hands. 
Environmental Assessment 
Page 42 
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