Table 1.

Vertical extension (column length) of discolored and decayed wood associated with 2-, 3-, and 4-year-old wounds on red maple.

Year of cutting, tree numberBartlett Trees, by treatmentHubbard Brook trees, by treatment
A1PSCAPSC
cm cm
1972:
1 222 19 18 23 3027 20 40
216 25 19 1916 31 20 40
314 16 17 17 23 45 35 22
434 27 28 21 17 30 1425
5 16 18 18 22 37 33 43 35
1973:
1 20 32 25 23 31 24 37 25
219233730 26 17 45 28
32524 29 21 28 35 34 27
4 50 28352930 20 2634
5231322263932 23 24
1974:
1 27 40 21 28 35 45 35 33
1 21 26 46 17 31 35 27 30
3 24 20 22 23 29 30 30 25
4 15 25 31 25 29 31 31 24
5 23 22 18 21 24 32 34 26
Mean3 24.029.7
  • 1 A, asphalt; P, polyurethane; S, shellac; C, control.

  • 2 Single underline indicates isolation of Hypoxylon spp., double underline indicates isolation of Hymenomycetes.

  • 3 Means significantly different at the 95% level of probability (F test).