STEWART'S DISEASE OF SWEET CORN (MAIZE). 



117 



that several varieties of seed-corn were infected when planted, yielding some diseased plants 

 early in the season, and that other varieties were infected therefrom. This is the more 

 likely because in some varieties there were frequent skips, whole hills being missing. Inas- 

 much as this trial plot furnishes the best evidence possessed by the writer on the interesting 

 question of varietal resistance, all the data are given in table 9 for what they are worth, i. e., 

 as a suggestion toward future experimentation. 



SUSCEPTIBLE AND RESISTANT VARIETIES. 



Table 9. Cases by Varieties on July 21 in Department of Agriculture Trial Rows, Southwest Corner 

 of the Farm on the Potomac Flats, beyond the Stables. 



Short rows, about 20 plants in each row, some more, some less. 



Trial 

 No. 



853 



854 



855 

 856 



857 



858 

 859 

 860 



86l 



862 

 863 



Source. 



Seed and Plant Introduction 9573 



Seed and Plant Introduction 9447 



Burpee 



Ferry 



Free Seed Distribution 278 (Clarke, 



Conn.), double row. 



Burpee 



Emerson 



Free Seed Distribution 346, purchased 



from Burpee and grown by Clark, 



Ohio, double row. 

 Free Seed Distribution 228(Clark, Conn.) 



double row. 

 Free Seed Distribution 370, western seed 



(Waterloo, Nebr.), double row. 

 Free Seed Distribution 375, western seed, 



double row. 



Variety. 



Malakoff 



Malakoff 



Golden Bantam 



Oakview Early Market 

 Extra Early Red Cory 



Fordhook 



Emerson's First Crop. . 

 Cosmopolitan 



Metropolitan 



Hys' Metropolitan. . . . 

 Crosby's Early 



Long rows, originally 40 plants per row, reduced to an average of 32 per row, according to my count. 



864 

 865 



866 

 867 

 868 

 869 

 870 

 871 



872 

 873 



874 



875 

 876 



877 

 878 

 879 



880 



882 



Free Seed Distribution 230 (Clark, Conn. ) 



Free Seed Distribution 245, Robinson 

 (Waterloo, Nebr.). 



Free Seed Distribution 271 (Clark, Conn.) 



Free Seed Distribution 305, Robinson. . . 



A. N. Clark (Conn.) 



Holmes (Harrisburg) 



Ferry. Many skips, only 6 plants remain. 



Free Seed Distribution 369, western seed 

 A good row by the side of two very 

 poor rows, 869 and 870. Tall corn. 



Free Seed Distribution 37 1 , western seed 



Free Seed Distribution 352, Phillips (To- 

 ledo, Ohio). 



Free Seed Distribution 373, western seed. 



A. N. Clark, Conn 



Do 



Free Seed Distribution 227, Clark, Conn. . 



Free Seed Distribution 270, Clark, Conn. . 



Free Seed Distribution 276, Clark (seed- 

 house floor). 



Free Seed Distribution 229, Clark, Conn 



Free Seed Distribution 275, Clark, Conn 

 A. N. Clark, Conn 



Crosby's Early. 

 ....Do 



....Do 



.... Do 



.... Do 



Holmes' Premo 



Early Sweet or Sugar. 

 Champion Early 



Black Mexican (tall corn) 



Potter's Excelsior. (Fine growth; 



full row.) 

 Egyptian (tall corn; the one case 

 a dwarf). 



Potter's Excelsior 



Country Gentleman (4 skips) 



Country Gentleman 



...Do 



...Do 



Hickory Improved (diseased 



plants, very small). 

 Hickory Improved (both large 



plants, slightly affected). 

 Hickory Sugar 



10 

 T5 



4 



2 



1 



o 

 o 

 o 

 1 (slight) 



2 



2 



4 



33 



25 



25 

 30 



33 



20 



66 



6 



'5 

 o 



And some skips. 



tSkips and inferior plants. 



