Leopold, Aldo / Organizations, Committees: M-N
Audubon Society, 1941-1948, pp. -
National Audubon Society 1000 Fifth Avenue New York 29, New York TO: MR. R&M FRlKt: RICHARtD K. P(O)H March 191948 Subject-U Se Of Weed.uoisps b railroads I had an interesting talk with Mr. Everett Gilbert of the erAnral Chemical Dveion of the Allied Chmical & Dye Cor tion, 4202 55th Drive, Laurel Hill, Log Island. 11 tells me that there has been a tremndous Ox~sio In the last tun year. in tile mse of ehlimcal agents for weedeontro1. Periodic con! Gr.1ces are now Iheig h~eld on this subect, 1hre was one a we or so ago at the Hotel . For ometije I have been just as utuh afraid of these new weed peons as I have been of DDT,. In someAs I think they are amn a more serious threat to wildlife. In all mildlife answmation wrk the basic probl m is ouservnti. of habitat# 43ich is thev ery t hing there chazczils threaten. They make it pessible to eontrol or eliminate ,'l nt Ides, which rIthough not desired by man, provides In same eases cr'itically needed wildlife habitats. Xr. Gilbert was partictalarly well info)rmd on the us. of these chmcals by railroads along their rigt-of-ways. But I fear equal dagers in connection with their use t- state hig~way departrents rlong road -i.ie! vnd by firmrs in their efforts to eliminate unda.red ft eid4bord-r gro#Jis. The rail.roads, apparently, object to aiq growths on t heir right- of-wavy, including grass, within 16 feet of the center l4ne of the outside set of tracks. Thoy cliit trbccelerates the decay of their tiis. Kow'ing was once widely used by thr railroran to d is- courage these growths, but t his has bcoe imractical, due to high labor coast. Some experimenting has been4one wth flcns throwers, but they have the serious disadvantage of oftu settA4 fir*es To date, cont bsed o the use of hoimoneB such as 24D have not been ve satifacoy, beause the railroads are just a anxi to get rid of grass as anything else ad they seen ineffective against this type of groth. m , the mot widely used chifl~oals are sodium chlorate, petrl oils a sdu msrsmite. The latter is aeadly poon to all animals and maywell kil mm birds directly,, besides destroying a sepm~t of habitato One serious aspect of this that occurs to m is the dage it may do to * eol ealy 'valuable rmeants of orignal groth Aidh are, I understand,, beet preserved ini many areas along the railroad rights-of-wayo ~A2L
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