NEMATOCIDEL USE OF 3,4,4-TRIFLUORO-3-BUTENYLTHIO METHYLIDENE COMPOUNDS

Compounds of the formula WHEREIN X is a member selected from the group consisting of oxygen, sulfur, imino, phenylimino, chlorophenylimino, alkylimino containing from one to eight carbon atoms, inclusive, and alkenylimino containing two to four carbon atoms, inclusive, R is selected from the group WHEREIN R1 and R2, individually, are selected from the group consisting of hydrogen, alkyl containing from one to 10 carbon atoms, inclusive, hydroxyalkyl containing from one to four carbon atoms, inclusive, alkenyl containing from two to four carbon atoms, inclusive, cycloalkyl containing from four to six carbon atoms, inclusive, phenyl, and R1 and R2 jointly are a divalent alkylene radical containing four to six carbon atoms, inclusive, and R3 is selected from the group lower alkyl, chlorophenyl lower alkyl, and 3,4,4-trifluoro-3-butenyl. The above compounds are effective herbicides and nematocides. Representative compounds are S-(3,4,4-trifluoro-3-butenyl) N-methyl dithiocarbamate, S,S-bis-(3,4,4--trifluoro-3-butenyl N-ethylimino dithiocarbonate, 3,4,4-trifluoro-3-butenyl ethyl trithiocarbonate, S-(3,4,4-trifluoro-3-butenyl)-N-phenyl-N-methyl isothiourea.