Abstract
Data secured from 1956 to 1959 through greenhouse expcrimcnts. showed that greenbug (Toxoptera graminum(Rond.)) control with the systemic phosphorus compounds demeton and Di-Syston® (O,O-diethyl S-2-(ethylthio)ethyl phosphorodithioate) used as soil treatments was little or no better when used in combination with nitrogen and phosphorus fertilizers than when used alone. However, slight differences were realized when demeton was used as a seed treatment.

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