10 



MONTANA EXPERIMENT STATION BULLETIN 442 



was almost $700,000 greater than in 1945. If weather conditions had 

 been more favorable for fall baiting, the tons of bait used would 

 surely have exceeded last year's figure. 



A federally financed road side baiting campaign was conducted 

 again this year. In general the results were not good and the work 

 was hampered by unfavorable weather conditions. Federally paid 

 crews and equipment operated in Custer, Rosebud, Chouteau, Pon- 

 dera, and Teton counties, spreading 80 tons of bait on 10,243 acres 

 along highway and railroad right of ways. 



It is estimated that approximately $3,193,000 were saved as a 

 result of the control work and that the loss from grasshopper dam- 

 age was $1,207,160. In the 23 counties that were actively engaged 

 in the campaign, 1,868 farmers treated 235,662 acres of land using 

 1,680 tons of bait (tables II and III). 



GRASSHOPPER OUTLOOK 



FOR 19 4 7 



SEVERE 



VERY SEVERE 



THREATENING 



Figure 1. Results lof the autumn, 1946, grasshopper egg survey, indicating 

 areas where crop damage is likely to occur in 1947. 



GRASSHOPPER OUTLOOK FOR 1947 



The grasshopper egg survey made in the fall of 1946 indicates 

 that threatening to very severe infestations are likely to occur in 

 the Triangle area including parts of Glacier, Toole, Pondera, Lib- 

 erty, Teton, Chouteau, and Cascade counties, as well as in Fergus 

 County; the highest egg counts that have been made in the State in 



