One of the oldest pesticides known, pyrethrum is also the strongest insecticide allowed under National Organic Standards guidelines. Made from the dried flowers of a little white daisy now classified ...
World War II is a boon to the bug armies. The minerals with which man has fought bugs for years-arsenic, copper, lead-are now needed for his war on his own kind. Carbon tetrachloride, ethylene ...
A pyrethrum refining plant, which was set up by Horizon Group, has started producing an insecticide known as Pyrethrum 5EW, expected to control coffee and tea pests. The company, Agropharm Africa Ltd, ...
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