Feb. 24,1923 Early Vigor , Yield , and Diseases of Maize 
593 
Table VII.;— Relation of early vigor 30 days after planting to yield, as influenced by 
seed infection in Funk Ninety-Day corn, grown from relatively disease-free and diseased 
seed on infested soil, at Bloomington , III., in IQl8 
Relatively disease-free seed. 
Diseased seed. 
Points considered. 
Vigorous. 
Semi- 
vigorous. 
Weak. 
Vigorous. 
•Semi- 
vigorous. 
Weak. 
Total number of plants.. 
139 
58 
19 
55 
98 
36 
Percentage of plants in 
each group. 
Average yield per plant 
64-3 
26. 9 
8.8 
29.1 
SI. 8 
19. 1 
(in grams). 
243 - 5 
207. 2 
97-7 
241. 5 
172.7 
86.8 
Percentage of barren 
plants. 
. 1 
3-5 
26.3 
0 
7.2 
50.0 
Table VIII.— Relation of early vigor to rate of growth and yield as influenced by seed 
infection in Funk Ninety-Day corn grown on clean soil at Bloomington', III** in 
1919 
Relatively disease-free seed. 
Slightly diseased seed. 
Points considered. 
Vigorous. 
Semi- 
vigorous. 
Weak. 
Vigorous. 
Semi- 
vigorous. 
Weak. 
Total number of plants.. 
Percentage of plants in 
146 
159 
45 
123 
165 
38 
each group. 
Average height (in centi¬ 
meters) 15 days after 
41. 8 
45-6 
12.8 
37 - 7 
50.6 
n. 7 
planting. 
Average height (in centi¬ 
meters) 36 days after 
44.3 
37-7 
26.8 
43-3 
3 & 2 
24.4 
planting. 
Average increase in 
height per plant (in 
centimeters) 21 days 
158.0 
146. 6 
123. 8 
158.8 
143 - 4 
114.5 
after first record. 
Average yield per plant 
’ ” 3*7 
108. 9 
97.0 
“ 5*5 
107. 2 
90.1 
(in grams). 
199.9 
192. 0 
158.0 
184. 6 
176. 6 
135 . 8 
