Article Figures & Data
Figures
- Figure 1.
Zelkova planting on the Michigan Agricultural Experiment Station.
- Figure 2.
Canker caused by Nectria cinnaborina on the trunk of a Zelkova.
- Figure 3.
Branch mortality caused by numerous Nectria cankers on a Zelkova.
- Figure 4.
Zelkova girdled by Nectria canker commonly sprout the following year.
- Figure 5.
Lawnmower wound on the base of a Zelkova.
- Figure 6.
One-year-old Nectria canker on Zelkova, small pustules indicated by arrow are sporodochia of Tuber-cularia vulgaris the asexual stage of Nectria cinnaborina.
- Figure 7.
Damage to Zelkova caused by an ice storm.
- Figure 8.
Damage to Zelkova caused by an ice storm.
- Figure 9.
Injury caused by an automobile to the base of a Zelkova during April 1972.
- Figure 10.
Injury (see Fig. 9) five years later.
- Figure 11.
Crown distortion of Zelkova caused by the prevailing westerly wind.
- Figure 12.
Crown distortion of Zelkova caused by the prevailing westerly wind.
- Figure 13.
V-crotch in Zelkova which results in a weak union between the branches.
Tables
- Table 1.
Mortality and history of a Zelkova planting (102 trees) in southern Michigan, 1955-1976.
Year No. of trees dying Cause of death Comments 1955-65 23 Unknown 1966 3 Probably canker Mower injury abundant, cankers common 1967 4 Canker ” 1968 4 Canker Mower injury rare 1969 16 Mouse injury canker Many trees severely injured by mice during winter 1970 1 Canker Mower injury rare Few active cankers 1971 1 Canker 1972 5 Ice damage, Canker Severe ice storm March caused extensive injury 1973 2 Canker, decay following mouse injury 1974 1 Canker 1975 1 Canker
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