TABLE 3.
RAPD analysis of individual Trichoderma-like colonies isolated from different soil, compost, and potting mix samples
| Sample description | Amt of Trichoderma propagules (log10 CFU/g)i | No. of colonies tested | No. of T. hamatum 382-like colonies with:
|
% T. hamatum 382 | ||
|---|---|---|---|---|---|---|
| OPH-19 | OPE-16 | OPH-20 | ||||
| Nursery soil 1a | 3.34 ± 0.50 | 13 | 0 | 0 | 0 | 0 |
| Nursery soil 2b | 4.05 ± 0.36 | 23 | 0 | 0 | 0 | 0 |
| Warner compostb | 3.01 ± 0.11 | 106 | 0 | 0 | 0 | 0 |
| Bark compostc | 3.00 ± 0.29 | 21 | 0 | 0 | 0 | 0 |
| Forest litterd | 4.52 ± 0.42 | 21 | 0 | 0 | 0 | 0 |
| Container mix 1e | 3.52 ± 0.25 | 21 | 0 | 0 | 0 | 0 |
| Container mix 2f | 5.04 ± 0.01 | 42 | 0 | 0 | 0 | 0 |
| Container mix 3g | 3.80 ± 1.05 | 27 | 1 | 1 | 0 | 0 |
| Container mix 4h | 5.00 ± 0.18 | 23 | 23 | 23 | 23 | 100 |
a
Forestry nursery at Ohio Agricultural Research and Development Center, Wooster, Ohio.
b
Warner Nursery, Willoughby, Ohio.
c
Composted hardwood bark, Warner Nursery.
d
Native hardwood forest in Wayne County, Ohio.
e
Composted pine bark from Warner Nursery.
f
Composted pine bark from Paygro Inc., South Charleston, Ohio.
g
Composted pine bark mix from Earthgro Inc., Lebanon, Conn.
h
Composted pine bark mix from Earthgro Inc. fortified with T. hamatum 382 and F. balustinum 299.
i
Mean log10 CFU/gram (dry weight) of replicate samples ± standard deviation.