the percentage of clean ears in both 1955.and 1935, while in 1934 the proportion of 
rotted ears greatly exceeded the proportion of clean ears. The average percentages 
Table 5,-- Prevalence of ear rot in corn ears completely 
covered by husks, 1933-1935. 
—— em 
ae ee 
Closed ears | Number of ears, ‘Percent of cars 
Year | examined | Rotted |Not rotted} Rotted {Not rotted 
1933 4,000 1,382 2,618 34.6 | 65.4 
1934 5,967 5,258 709 88.1 11.9 
er ed ON 8 gB80 28.8_| ae 
Average i 48.8 | Sie 
— ee ee ee ES ee 
for the 3 years indicate that, among covered ears, there is a distinct tendency for 
clean ears to predominate. 
Of more significance, however, is the direct comparison given in Figure 1 
of the percentages recorded in Tables 4 and 5. In each of the 3 years, regardless of 
or. ee es a ee a te ee 
1933 
1934 
1935 
PN GP OSCR a. 
PELE (51.2) 
50 100 0 50 100 
Percent of ears rotted Percent of ears rot-free 
ee et ree 
Fig. 1.-- Prevalence and absence of ear rot in open and covered corn ears, 1955-55. 
[6] 
