138 



dicofol and PP199 at .02% would be recommended if available. Di- 

 cofol.as a standard, gave excellent control. PP199 will not be used 

 in this country for some years due to acute mammalian toxicity. 



The 1976 acaricidal tests again displayed PP199 as an effec- 

 tive acaricide. This time the .01% concentration was statistically 

 indistinguishable from the .02% concentration. PP199 at .01% had a 

 higher mite population and because of lack of control in the 1975 

 tests would not be recommended. Oxamyl was unstable in its effi- 

 cacy as a citrus rust mite suppressent. For this reason, further 

 testing would be recommended prior to making a recommendation. 

 In 1976 it showed control equal to or better than chlorobenzylate, 

 a recommended standard. 



Banex^^ consisting of cytex, an extract of seaweed and poly- 

 butenes, has an acute oral LD50 34,600 mg./kg. and an acute dermal 

 LD 50 greater than 10,250 mg./kg. of body weight. This chemical 

 was statistically indistinguishable from chlorobenzylate, the standard, 

 Normally it would not be economically justified to develope a chem- 

 ical which is no better than the standards. BanexR may be the ex- 

 ception to the rule. Here is an extremely safe non-petroleum ex- 

 tracted chemical which has the same potential as chlorobenzylate, 

 which has a much lower LD50 value. This chemical is currently under 

 testing. It is hoped that it will be made available cormiercially 

 in the future. 



