50 



CEREAL IIUSTS OF THE UNITED STATES. 



Etampes, Black Houdaii, and Honstous Silver White were rusted only 

 7 to 10 per cent, and Black America, Eust Proof, Monarch, White 

 Bedford, White Superior Scotch, and Centennial were rusted 27 to 30 

 per cent. 



While conducting the field experiments on rust liability of varieties 

 of wheat, the writer also tested a number of varieties of oats in the 

 same way during the first two years, and as the crown rust was the 

 only one present at Garrett Park and the principal one at Salina, 

 the experiments will be discussed under this head. The varieties of 

 oats used in these experiments were obtained through the same sources 

 as were the wheats, although, of course, they were not obtained from 

 so many countries. They represent nearly all the cultivated subspe- 

 cies and varieties of Arena sativa. The results of the experiments 

 are arranged in the following table, to which the explanations of Table 3 

 also apply. The varieties were all sown in the spring at the usual 

 time, although a few of them were winter sorts. The methods of seed- 

 ing, etc., employed were the same as in the case of the wheats. 



Tablk 7. — Uredo coro7ia1a on varieties of oats. 



Localities and names of 

 varieties. 



North Dakota: 



Black Prolific 



Early White Russian. 



Fentons Rust Proof. . . 



Giant Side 



Giant Yellow 



Golden Giant Side 



Great Northern 



Lincoln 



Race Horse 



Tartarian 



Wide Awake 



Scotland : 



Barbachlow 



Black Tartarian 



Blainslie 



Dun 



Subspe- 

 cies." 



Early Angus 



Hamilton 



Hopetoiin 



Long Fellow 



Potato 



Providence 



Sandy 



Tom Finlay 



Sweden : 



Black Tartarian 



Ligowo 



Svaliii's 



Germany : 



Anderbeck 



Angus 



Australian (Port Adelaide) 



Barbachlow 



Berwick 



Bestehorn 



Black Hungarian 



Black Nubian 



Per cent of rusti- 

 ness at— 



Garrett | Salina, 

 Park, I June 30, 

 July 16, 1895. 1896. 



5 



1 

 5 



3 

 •2 

 3 



n 



10 

 5 

 13 

 12 

 8 

 12 

 10 



92 

 93 

 91 

 91 

 89 

 70 

 91 

 92 

 *"95 

 88 

 95 



Average. 



47 

 47 

 47 

 47 

 47 

 38 

 46 

 48 

 49 

 45 

 50 



Remarks. 



* Mean of two grades. 



* Not planted in 1896. 



Either winter or spriiis, 

 riety. 



Same as White Polisli. 



'p means panicled oats, s side oats, n naked oats, and refer, re.spectively, to the siib.species patula, 

 orientalis. and micla of Avena sativa. 

 2 The reference marks call attention to jiotes in the last column. 



