TWENTY-SIXTH REPORT OF STATE ENTOMOLOGIST 



17 



1934 $5,513,000 $500,000 $6,013,000 



1935 2.434,000 600,000 3,034,000 



1936 1,900,000 650,000 2,550,000 



Total $9,847,000 $1,750,000 $11,597,000 



$7,500,000 



783.000 



2,175.000 



$10,458,000 



the use of poisoned bait against these insects the total loss 

 would have been over $22,000,000. The saving in 1934 was made 

 mostly in north-central Montana where a good grain crop was 

 grown in spite of the heaviest 'hopper infestation in the history 

 of the state. The savings in 1935 and 1936 were made mostly in 

 the irrigated sections. 



THE GRASSHOPPER SITUATION FOR 1937 



In order to predict the probable extent of grasshopper in- 

 festations in 1937, adult and egg surveys were made during the 

 latter part of August, September, and October, 1936. Approxi- 

 mately 250 examinations for adults were made in 43 counties 

 and 247 examinations in 37 counties for grasshopper eggs. From 

 the data collected, a summary of which appears in table 7, heavy 

 infestations are to be expected in Park, Yellowstone, Big Horn, 

 Petroleum, Lewis and Clark, Pondera, and Glacier counties. 

 Moderate infestations can be looked for in all other counties east 

 of the continental divide except Broadwater, Liberty, and Mc- 

 Cone which are scheduled for fairly light outbreaks. Beaver- 

 head and Meagher together with the counties west of the divide 

 were not surveyed. 



The survey on which the 1937 prediction is based was sup- 

 table 5.— COMPARISON OF THE AMOUNT OF GRASSHOPPER BAIT ESTIMATED 

 FOR 1937 WITH THE PREDICTED AND ACTUAL AMOUNTS 

 FOR THE THREE PREVIOUS YEARS 



