San Juan Record | 1933-11-16 | Page 7 | Points out Advantage of "Gassing" Borers

points out advantage of gassing borers each growers who gassed their trees a year ago with P D t 11 I 1 treatment mentford for the control of peach borers can economize by omitting the treatment this fall but nil all those who have not treated their trees for two or more years probably will bo be bhend by doing so at this season according to results of a survey made by S 0 chandler entomologist of the illinois state natural history survey in cooperation with the horticultural deportment department part ment of the college of agriculture university of illinois the peach borer la Is one of the hazards which has made the annual farm value of illinois peach crop vary from total failure to during the past 21 years every fall growers puzzle over whether or not they should economize by or omitting nitting the treatment datri collected in the survey help answer the lie question for this year thirty orchards in ID the largest peach area of the state were covered only 02 per cent wormy trees a light infestation was found in ten orchards which had been treated with P D D B at the end of the 1032 1932 season in contrast per cent of the trees were infested in ten orchards which were treated in 1931 1031 or two years ago this djs was almost st sl times the infestation in orchards that were treated a year ngo ago over 54 per cent of the trees were found infested in ten en orchards which were last treated in 1030 1930 or earlier or never treated at all