13& THE MONTANA EXPERIMENT STATION 



It will be seen that in May, June and July of 1907 there was an 

 unusual amount of rainfall. This, of course, favored the production 

 of. a good crop under the adverse conditions. 



. The Experiment Station will continue, for a time, the study of 

 the insect that caused the outbreak in the .Gallatin valley and it is 

 hoped that we shall learn more about its life history, habits and 

 natural enemies. It is hoped, further, that we may determine wheth- 

 er or no.t the three named species of the genus Choriza gratis are all 

 one. ,.';,, 



OCCURRENCE IN OTHER PARTS OF THE STATE 



The larval characters of these species have not been worked out 

 and compared with each other, and with other closely related forms, 

 but a careful examination of the various lots that were sent in to 

 us, from widely different parts of the state, lead us to the conclusion 

 that this was practically the only species of cutworm that caused 

 much damage to crops in the state of Montana in the summer of 

 1907, and that this species was very widely and abundantly distrib- 

 uted. We received complaints from several people near Great 

 Falls, and while in that city made an examination in gardens and 

 found this species plentiful and no other one present. With the ex- 

 ception of two other species of cutworms which we found very spar- 

 ingly around Bozeman, the army cutworm was the only one that we 

 saw during the summer in our walks in town and in the fields jut- 

 side'of town. This species we saw very frequently. 



RETURNS FROM QUESTIONS ASKED OF FARMERS 



For the purpose of obtaining actual knowledge of the extent 

 and conditions of the outbreak in the Gallatin valley, a series of 

 questions was prepared and sent early in May to such addresses as 

 we were able to get of those whose fields were infested. Replies were 

 prompt and willing. 



1. How many acres have you infested with army cutworms? 



To our certain knowledge there were very many whose ad- 

 dresses we did not have and the questions were sent onlv to the 

 addresses in the Gallatin valley as we had made no study of the con- 

 ditions in the more or less scattering districts in other parts of the 

 state. Therefore, the figures here given represent only a small part 



