FIFTH ANNUAL REPORT STATE ENTOMOLOGIST 13^ 



of the area infested in the state. These figures are of interest, how- 

 ever, as they show the extent of area concerned in the other answers 

 that follow. The actual area here reported upon is four thousand, 

 five hundred and sixty-two acres. 



?. How many acres completely destroyed so that re-seeding 

 seems to be desirable? 



Two thousand, six hundred and ten acres were reported. We 

 know, however, that much more than this was destroyed. 



3. Name the kinds of crops affected and acreage of each. 

 Very little was reported excepting wheat. One reported alfalfa. 



4. When were your affected fields ploughed? 



Some replied, May ; some, June ; a majority replied May and June 

 while a few did not finish until early in July. From the reports it 

 is apparent that the greater part of the ploughing was completed by 

 June 20. 



As stated elsewhere in these notes the army cutworm was in- 

 jurious chiefly on summer fallow land or land above the ditch. Un- 

 der the practices of dry land farming in the Gallatin valley it is there- 

 fore to be expected that the ploughing should be done in May or 

 June. In sending out the list of questions it was not apparent 

 whether the persons whose names we had were above or below 

 ditches. 



5. What was the previous condition of each field? (Whether 

 iu summer fallow, never ploughed before, clover etc.) 



Almost without exception the affected fields had been in grain 

 the year before and were stubble, ploughed under in the spring. A 

 little virgin sod was reported and a little "second sod." 



6. If the field was in summer fallow, was it free of weeds, vol- 

 unteer grain, or other vegetation during the latter part of the sum- 

 mer, and during the fall? 



About one-half of those addressed reported their fields to be 

 fiee or practically free of weeds or other vegetation. Nearly one-half 

 reported some weeds or volunteer grain and a very few reported many 

 weeds or much grain. Large fields reported free of all vegetation or 

 practically so were also reported as completely eaten off. We had 

 previously felt that probably the presence of the army cutworms m 

 the fields could be traced to volunteer grain or weeds in the same 

 fields the summer or fall before. In the light of the fairly abundant 

 evidence produced in these replies we are left in doubt as to the ex- 



