GROWING SEASONS | ||||||||
---|---|---|---|---|---|---|---|---|
Mulch | 1979 | 1980 | 1981 | Average fresh weight | ||||
% caliper increase | rank | % caliper increase | rank | % caliper increasez | rank | kilogram | rank | |
Weed-Chek fiberglass | 12 | 3 | 56 | 6 | 159b | 7 | 3.2 | 6 |
Wood chips | 9 | 5 | 63 | 5 | 172b | 4 | 4.2 | 3 |
Hay | 16 | 2 | 84 | 2 | 246a | 1 | 5.4 | 1 |
Turface | 12 | 3 | 82 | 3 | 209a,b | 3 | 4.0 | 4 |
Redwood bark | 10 | 4 | 64 | 4 | 171b | 5 | 3.4 | 5 |
Black plastic | 18 | 1 | 96 | 1 | 225a | 2 | 4.9 | 2 |
No mulch | 9 | 5 | 48 | 7 | 162b | 6 | 3.2 | 6 |
↵z Mean separation by Duncan’s multiple range test, 1 % level. Means not followed by the same letter differ significantly at the 1 % level.