Arizona Agricultural Exri:uiMi:.\T Siaiion 445 



the wheats, not only of our own Experiment Farm, but of the 

 Salt River Valley in general, were more seriously affected by rust 

 than during any of the past eight or ten seasons. In this connec- 

 tion it was very noticeable that the variety of hard red winter 

 wheat named "Kanred" was decidedly more rust-resistant than any 

 other variety on the farm. Early Baart was severely injured by 

 rust, Sonora suffered considerably. Macaroni yields were reduced 

 by not less than ten percent, and the ordinary hard red winter 

 wheat of the Turkey variety, which matured very late, was so 

 severely damaged that it was not harvested. 



In these experiments Abruzzi rye made very excellent growth 

 and produced approximately twenty-five bushels of reasonably 

 good quality grain. 



Almost perfect control of stinking smut of wheat and covered 

 smut of barley was secured by means of treating seed with formalin 

 before planting. 



VII. EFFF.CT OF DYNAMITING SUBSOIL ON FIELD CROPS 



This project has been handled entirely on the Sulphur Spring- 

 Valley Dry-Farm. During the seasons 1918-1919 no diiTerences 

 were noted on the yields of sorghums planted on the dynamited 

 area compared to the same varieties planted on undynamited areas. 

 During the season 1920 this experiment will be carried just as in 

 previous years, but at the close of June, 1920, it promises to give 

 the same results as in previous seasons. 



VIII. VARIDTAL AND CULTURAL TESTS OF GRAIN AND CULTURAL TESTS 

 OF GRAIN AND FORAGE CROPS AND OF GRASSES AND MISCELLANEOUS CROPS 



Under this project, experiments with Napier grass were carrietl 

 a little farther than during the preceding year. Although an excel- 

 lent growth was secured, it seems doubtful that this crop will be 

 generally accepted by the farmers of this State. Our limited work 

 of the early season makes it appear that the crop will be more 

 difficult to handle and no more desirable than the varieties of 

 sorghums already grown commercially in the State. 



Rhodes grass has been planted on the University Farm near 

 Tucson on extremely alkaline ground, and has made a satisfactory 

 growth and produced abundant and valuable pasturage. Likewise 

 the plantings of this grass made the previous year (on alkaline 

 ground) have produced a more thrifty and vigorous growth this 

 year than during the previous season. It seems likely that Rhodes 

 grass is worthy of more exhaustive trial and probably worthy of 



