y34 



TWEiNT V - LI U8T UEl'UU T. 



Hubbardstown group, Beu Davis, Northwestern and RhCde Island Green- 

 ing : Red Astrican. Northern Spy. 



Accounts in the trade papers indicated the same disease was present in 

 Ohio, Pennsylvania and Virginia apples. 



CEREAL DISEASES. 



The work on cereal diseases was largely the result of survey work of the 

 federal field agents assigned to Michigan. The following tables are compiled 

 from the readings taken on the various farms visited. In nearly every county 

 of the state, work was done and from 6 to 18 farms surveyed. The farms ran 

 fairly typical of conditions as pictured in the country in general. The results, 

 while not permitting an evaluation of the various counties, showed marked 

 superiority in the counties where county agent work was carried over those 

 in which extension work was uudeveloijed. 



Oats : Observations on oat diseases centered on the two smuts, loose and 

 covered. Both were found everywhere in the slate and fairly uniformly dis- 

 tributed. The figures given in the table show the high percentage of loss from 

 smut and the striking effectiveness of control measures where practiced by 

 farmers. The ratio of treated to luitreated fields shows the effectiveness of 

 the control work being inaugurated by our county agents: 



TABLE 2 

 Field Survey of Oat Smut 



Survey carried on in .59 counties. 



f)f total fields surveyed 40 % (approx.) were treated. 



Ill ;id(liMoii f(t Oil! smut, the following discM^cs were soen : HacttM'iai 

 lihidc Itligbt. general; HelminthosiM)run si>ot. loss, siigbt : "Hlnsf. or f,iilun> 

 of spikolets to develop, common; Stem Kust. exlienicly coiuiiioii : Leaf Kust. 

 due to J'liccinia corotiata, common. 



Barley: The acreage of barley greatly increased in Micliigaii din-ing llu» 

 war period. This increase was obtained as a result of planting Wi.^consin ,>^oed 

 for the most part. With the seed, naturally, the organisms causing various 

 coumioii barley di.eea.'^es were introduced. 



