Word: systox
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...halted all ivy spraying on seven buildings north of the Yard. None of these have been sprayed since, but B and G will apply some 20 gallons of meta-systox-R, an organic phosphate insecticide, to the ivy in the Yard and elsewhere next month...
...pyrethrum. Their effectiveness, though, is limited to certain chewing pests and sucking insects, such as Diabrotica and thrips. Some synthetic poisons, for example diazinon, kill more kinds of bugs than botanicals but are also more persistent. The newest synthetic poisons are the highly toxic "systemics" (Di-syston and Meta-systox-R), which kill sucking pests after being absorbed by plants. On the market for only two years, systemics may eventually prove undesirable for garden...
Some good news for growers of citrus fruit, cotton and potatoes came from Dr. Robert Metcalf. a co-worker of March's at California's Riverside Experimental Station. He and fellow workers have developed two new double-barreled insecticides that attack pests from inside plants. Called Systox and OMPA, they are a by-product of German wartime efforts to produce a nerve gas. If sprayed only on a tree trunk, Systox and OMPA work their way inside so neatly that they protect leaves that grow after the spraying is done. They seem to leave little harmful residue...
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