36 CEREAL RUSTS OF THE UNITED STATES. 



varieties rusted 8 per cent and under are Haynes Blue Stem,^ Ristings 

 Fife, Glyndou No. 761,^ and Haynes Blue Stem x Glyudon No. 761; 

 tliose rusted 20 per cent and over are Rio Grande, Preston, Percy, 

 Countess, Ladoga, Dawn, Alpha, and Progress. The last seven, which 

 were most rusted of all the varieties, are Professor Sauuders's new 

 crossbred s sent from Canada. 



Some observations made in the Southern vStates are of special inter- 

 est, because of the usual abundance of orange leaf rust in that region. 

 Tracy (68, pp. 23-25; 69, pp. 44-46) writes that the varieties Defiance 

 and Beloturka, received from Australia, were strongly rust resistant 

 in Mississippi and promise well for that region. Canning Downs, 

 received at the same time, winterkilled. Twelve varieties obtained from 

 England ripened very late and were almost destroyed by rust. Two 

 varieties from France, White Naples and Rieti, made very good yields. 

 In Louisiana, where rust is very abundant, Stubbs (66, pp. 556-561) tested 

 cj.uite a number of varieties at Calhoun and Baton Rouge, most of them 

 having been obtained from California. At Baton Rouge all the varie- 

 ties failed completely. At Calhoun the following varieties were badly 

 damaged by rust: 



Fonr-rowed Imported Winter. Holhurn Wonder. 



Red Wheat Gold Finder. Thuring Row. 



Halletts Red Winter. , Halletts Geuealogic. 



Hundred Fold. Spanldiugs Prolific. 



Arizona Indian. Mammoth. 



Carters Queen. Hybrid Lamed. 



Common March. Egyptian. 



Those entirely free from rust or only slightly affected were — 



Indian Three Months. California Spring. 



Molds White Winter. Winter Genoese. 



Russian Red Bearded. Ghirka. 



Fulcaster. Harris. 



Big Long Bearded Clul) Brenner. Diehl Mediterranean. 



Sibleys No. 1. White Russian. 



Mediterranean. White Boughton. 



Red Russian. Golden Cross. 



Purple Straw. Tuscan Island. 



According to Kellner (41a, pp. 138-143), out of 151 varieties of wheat 

 and spelt tested at the California Agricultural Experiment Station in 

 1892, only the following were practically rust free: Arizona Indian, Big 

 Long Bearded Club, Blue Grass, F. Gates, INIissogen, Nicaragua, Rus- 

 sian Durum, Russian Red Bearded, Red Sonora, Sicilian, Solid Straw 

 Poulard, White Crimean, and Red Emmer. 



In Australia the subject of rust resistance has, as already stated, 

 been investigated more, or at least by a greater number of investiga- 

 tors, than in any other country. Several elaborate series of such 

 experiments have been made with difi'ereut varieties and these have 



' In duplicate plats rusted as high as 10 per cent. 

 2 In duplicate plat rusted 11 per cent. 



