Show crown rust of oats spread by buckthorn ailment blamed on hedge and ornamental plants prepared by th the united state department of crown rust of oats Is spread through certain species of buckthorn commonly grown as hedge and ornamental ornament al plants in some sections of the united states according to operative cooperative co investigations conducted by the united states department of agriculture the iowa experiment station and other operators cooperators co an epidemic at blinton iowa caused by an infection from rom a rod hedge was so severe la in 1921 that the oats in the adjoining fields were not harvested the part that these species of buckthorn play in the spread of this disease has been studied tor for several years A bulletin discussing the findings of the investigators has just been issued by the united states department of agriculture as department bulletin 1162 and li Is now available to t those hose interested in the subject the bulletin Is ot of a technical nature discussing the relative importance of the he different species of buckthorn and citing instances of damage which furnish conclusive evidence of the fact that this shrub Is ie responsible for the harboring and spread of crown rust infection A copy of the bulletin may be secured from the united states department part ment of agriculture washington D C while the supply lasts |