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DISCUSSION 



Dr. Jansen: At Bcltsville we have been engaged in a long-term 

 investigation of the effects of surfactants in herbicidal spray prepar- 

 ations. A number of surfactants have been encountered which, in 

 the absence of herbicides, produce some rather striking growth stimu- 

 lations in corn and soybeans. The individual surfactants do not 

 always stimulate both species nor do they always produce stimulation 

 at the same concentrations. Increases in growth up to 25 per cent 



