Show COTTON GOTTON PESTS BEIN G FOUGHT Thousand Poisons Tested By Bv Chemists to Aid Ai Southern Planters NEW YORK July 2 In In an effort to te make the boll bon weevil like its Us poi pot poison son son and so fall faU a Q greater victim Im to its own taste chemists of the chemi chemi- chemical chemical chemical cal warfare service ice have ha experiment experimented ed edIth with Ith ith more than 1000 poisons and nd poison polson mixtures against l lOO O c Cf the cotton coL on Insects Report of the progress oT o the tho chemists H. H W. W Walker and J E. E Mills has just been Issued by the American Chemical society Of or the 1000 poisons tried 62 com coin compounds pounds were ere found that equaled or surpassed calcium arsenate which is 15 isnow Isnow now the standard in this drive against the wetsil But only 22 of these caused little or no plant Injury AJ A out of of f these 22 only live fhe are com corn commercial mercial possibilities HARD liARD TO AFFECT IT Not one substance however has been found that would attract or re repel re- re repel pel the boll weevil wee or even irritate it enough to make it fly It was thought the report bays aya that if 1 calcium arsenate could be made more pleasing to the weevils weevil's taste the weevil might Ingest more of the poison polson thus increasing the effectiveness of the calcium arson arson- a n- n ate ale GAS CAS FOUND FOum USELESS Poison Polson gases It was found have ha little effect on the pests The wee wee- weevils vhs vils could live li many hours without breathing fresh air The best ef effects ef- ef effects feels were obtained when calcium ar ar- arsenate ar- ar arsenate senate in a thin spray spra was used the percentage of the mixture being low enough h not to injure the plants The tests describe in the report began bean in 1924 and were carried out in Georgia Florida South Carolina and Alabama Weevils Wee were put In cold storage to be taken out when needed |