Show rosette disease of wheat Is compared difficult to tell accurately harm harin caused by each prepared by tho the united states department ot of Auri agriculture culture the rosetto rosette disease of wheat its ills bovere covered LI in illinois and in 1010 1919 affects wheat seedlings in ili sonto what the primo way us its do the attacks by tile the hessian fly find cert nIti other insect posts posits when the trouble Is chused by insects their presence or OvI evidence deace of their work serves tu to show tho the caiso of tho the trouble wheat seedlings attil eked by rosette dis desenso easo alone show no evid evidence enco of thu tho presence pre senco or work of insects it Is pointed out by specialists of the united 1 states department part ment of agriculture who laivo buen investigating these wheat the first positive indications of tho rosetto rosette disease beronio evident early curly in the spring after tile tho growth of hlll healthy plants la Is well 0 plants affected by rosetto dormant dorin in thu tho spring after tile tho healthy plant planta 4 commence their spring growth insist ed cd fields are anro spotted with irregular patches of awat fed plants tho the leaves of which tire aro dark blue green in color and are rather broad und and stiff ahn whole plant hus has a bu bunchy rosette up peti rance when both rosetto disease find insect injuries especially those elioso by fly occur together in tho the spring it t sometimes Is difficult to AC curn toly tely t tho lie I 1 injuries caused by euch each As the rosetto disease Is not in ili tile alio autumn and ns it be becomes conics ovi dept dent in the spring before tho enter genco ot of tho the adult hessian fly thoro there la Is vory very little chance to confuso confuse tho the two mn ladles during cheso por periods lods in tile the into spring however there la is n possibility of confusion if affected by rosetto rosette show in ili addition the spring infestation nf the fly these matters anre discus discussed ed ui ill bulletin 1137 symptoms of wheat rosetto rosette compared with those produced by certain insects just issued find inny be secured upon request from tho the united states department of agriculture washington D C |