Table 1.

Number of months between inoculation and maximum canker size on honeylocusts inoculated with Thyronectria austro-americana in different seasons.

Months to maximum canker sizea
YearGirdledbFallWinterSpringSummer
1983-84+0.3 ±0.69.3 ±0.64.3 ± 1.58.0 ±0.0
-9.0 ±0.08.0 ±0.03.7 ±0.67.3 ±0.6
1984-85+8.3 ±0.64.7 ± 1.23.3 ±0.68.7 ±0.6
-8.3 ±0.65.3 ± 1.24.0 ±0.09.0 ±6.1
  • a average of the three isolates.

  • b girdled = trees girdled mechanically by removing bark 3 cm wide around 50% of the circumference 10 cm above the ground.