Control of arthropod pests with phosphorous acid and mono-esters and salts thereof
 The invention relates to pesticidal compositions based on phosphorous acid, monoesters and salts thereof for new methods of use to control arthropod pests on plants or habitats thereof with a compound of a formula (I) ##STR1## wherein: R is an OH or an alkoxy having 1 to 4 carbon atoms; PA1 M is a hydrogen atom (when R is a hydroxyl radical) or an alkali metal, alkaline earth metal or aluminum cation; and PA1 n is an integer from 1 to 3. 
Rhone-Poulenc Ag Company
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A01N A01N
inventional inventional
James R.
Collins