| Show OUTBREAKS OF ARMY WORMS ARE EXPLAINED IN NEW BULLETIN B 1 N migration Is result of flight of moths prepared by the tha united states state Devart mew of agriculture 1 the frequent outbreaks of the full fall array army worm have caused this insect to be known lind and feared by farmers living in the southern half of the united states east of tile alie rociy hocky mountains for several years the united states department of agriculture has been conducting studies of tills this insect at t brownsville Browns ville texas results lle sulta ot of these studies have now been published ns as technical bulletin T studies on en the fall army worm in the gulf coast district of texans the general outbreaks occur in the united states ns as a result ot of the northward flight of moths ry by going northward the moths finally reach territory where the species Is unable to survive the winter since the army worm la is a tropical sp species ecles the northward migration is only a part of the general migration which occurs in all directions but it Is the part which la Is of most interest to the united states As a rule corn and forage crops mature ahead of the tha all flight bt of moths ot of therall the fall army worm wom but in occasional years crops are late moths concentrate on these lat lato crops and the result is 1 an outbreak of the fall army fruia the bulletin gives a complete discussion odthe of the life history and habits of the insect its seasonal season nl history and natural enemies it may be obtained from the office of information department part ment of agriculture washington D C Q as long as there Is a supply available for free distribution |
