Sweet Corn Disease Nursery

1998 Annual Report

Table 3. Criteria for classifying hybrid reactions to diseases in the 1998 nursery

Disease	Classification of reaction†
Disease	0	1	2	3	5	7	9
Common rust	RP		< 18	< 22	< 27	< 31	> 31
NLB	HtN	< 10	< 20	< 26	< 40	< 45	> 45
Stewart's wilt		< 2		< 2.75	< 4.0	< 4.5	> 4.5
MDM		< 20		< 35	< 50		> 50
SLB		< 2		< 3.2	< 4.5	< 5.5	> 5.5
Southern rust	Rpp			< 5	< 6	< 7	> 7
†Classification: 1 - resistant, 3 - moderately resistant, 5 - moderate, 7 - moderately susceptible, 9 - susceptible.