Show arsenic substitute in spraying and dusting fruit growers and truc tru liers chers who ire are looking for a substitute for arsenic in sprays and dusts will hilll he be glad to learn that the tennessee station has hi experimented with and barium lu flu and found them quite promising A summary of experimental results with these two Is about as follows these materials liae have a comparatively low solubility and are therefore reasonably safe on fol foliage lage they can now be obtained in commercial quantities at about the same price its as lead arsenate and barium are both highly toxic to insects In in small quantities such as might occur on plants fluorine compounds so far as known are not dangerously poisonous polson to man for adult insects barium Is more toxic than both materials gave excellent control of the Blex ican bean beetle when used as a spray at the rate of one pound to 50 gallons of water at the rate of six pounds to the acre neither nor barium cate used ns as a lust dust caused foliage injury on beans thirty pounds or more to the acre produced moderate burning five weekly hustings dustings dui du tangs stings on tobacco produced nn nf foliage injury with either material and controlled the horn worms and flen flea beetles both and barium cate used in the lust dust form at the rate of six pounds to the acre gave very good control of the bean beetle these materials were also used successfully when mixed with two parts of lime |