632 



IOWA DEPARTMENT OF AGRICULTURE. 



bushel. This may be considered low for the best results. 



Undoubtedly a large amount of seed oats will be used this season 

 that has been grown outside the state. In such case, care should be 

 taken that they are properly cleaned and free from objectionable weed 

 seeds. Seed secured from the north may, under ordinary conditions, be 

 expected to give satisfaction (especially so this season). Oats from the 

 irrigated regions have not been tested sufficiently by this Station to 

 permit their being recommended for use in this district. 



SMUT ADVANTAGES OF TREATMENT. 



The occurrence of smut in the oat crop of the state is a serious prob- 

 lem and its effect is greatly underestimated. Comparatively few farm- 

 ers give this disease any attention whatever, and it is apparent that 

 every smutted head is an absolute loss. 



In the years 1904-1906-1907 circulars were sent out to the members 

 of the Iowa Corn Growers' Association and the Short Course students 

 of the college, asking that they calculate the percentages of smut in the 

 crops of the ensuing season. The following replies were received: 



In 1904 131 farmers 13 treated for smut 

 In 1906 84 farmers 7 treated for smut 

 In 1907 147 farmers 33 treated for smut 



These counts represent: 



19(M 321 fields of which 30 were treated for smut 



1906 89 fields of which 8 were treated for smut 



1907 248 fields of which 17 were treated for smut 



The treatment of oats for smut with formalin is a simple process and 

 its effect as it is used by different farmers may be seen in the following 

 tables : 



Post Office 



Variety 



« S 





1907 



Gamble, T. H 



Miller, B. A 



Iowa Experiment Station... 

 Iowa Experiment Station... 

 Iowa Experiment Station... 



George, B. T... 



Miller, W. J 



Bberle, J. H 



Hodson, .1. L 



Behrens, O. C 



NefC, C. H 



Bennington, G. W 



Bates, H. A 



Hofier, J. T 



Mead A. E 



1906 

 Saunders, J. F 



1905 

 Iowa Experiment Station... 

 Iowa Experiment Station... 



1904 



Bailey, .7. H 



Ward. Walter E 



Humboldt ... 



Kalona 



Ames 



Ames 



Ames 



Janesville 



Ankeny 



Manilla 



Agency 



Volga 



Liscomb 



Volga 



Algona 



Nora Springs 

 Manchester . 



Rudd 



Ames 



Ames 



Diagonal 



Kiron 



Big 4 



Progress 



Wisconsin No. 4. 



Silvermine 



Kherson 



Early Champion . 



Early Champion 



Kherson 



80th Century 



Early Champion . 

 Early Champion . 

 White 



Early Champion 



.Toanette 



White Russian . 



Early Champion 



Average 



0. 



0.6 



0. 



0. 



0. 



0. 



1.3 



0. 



0.3 



0.5 



0.4 



0.4 



0. 



0.4 



1.3 



0. 

 0.6 



2.7 

 2.7 

 0.4 



0. 



0.3 



0.5 



1.4 



1.8 



1.8 



2.2 



2.2 



2.5 



4.1 



4.2 



6.1 



6.3 



0. 

 2.4 



5.4 

 5.4 

 3.9 



