76 



TENTH BIENNIAL REPORT 



dary are other states in the doubtful list, particularly Colorado, Kan- 

 sas, Missouri and Ohio. (See map, figure 1). In the states shaded 

 on this map active work on barberry eradication was carried on in 

 the summer of 1918, The task was a large one, but a splendid be- 

 ginning was' made. 



f 



Figure 2. Common barberry which harbors wheat rust, showing notched 

 leaves, berries in clusters and three-forlied spines. 



Importance of Finishing the Task 



One of the questions uppermost in the minds of American people 

 is "which of the good movements started on account of the war will 

 survive, and which will be abandoned ? " It is fully agreed that the 

 control of wheat rust is almost as important in peace times as in war 

 times, and if the program of barberry eradication is carried on to 

 completion in the territory indicated on the map the results will rank 

 among the benefits resulting indirectly from this fearful tragedy. 

 Probably wheat rust cannot be entirely done away with by barberry 

 eradication, but there is every reason to expect that it can be so reduced 

 in amount that it will cause very little economic los-s. 



