Tests with Some Phosphorus Compounds against Cattle Grubs1

Abstract

Preliminary tests were conducted with several phosphorus compounds against cattle grubs, Hypoderma bovis and H. lineatum. Materials tested as washes included Bayer 21/199, 21/200 and L 13/59 and chlorthion. Only chlorthion failed to cause 100% kill of the grubs. Bayer 21/199 and rotenone were tested as sprays. Bayer 21/199 was more effective and more rapid in its action at 0.5% than the standard rotenone spray.