Effects of Pythium Species and Time in Cold Storage on the Survival of Bareroot and Container-Grown Southern Pine Seedlings
Table 5
Mean bareroot loblolly and slash pine survival and Pythiaceous colony-forming units (CFUs) for 4- 6- and 12-week stored (4-5°C) seedlings six months after outplanting in 2009.
Pine
Treatmentz
Survival (%)
Pythiaceous (CFUs)
4 wks
6 wks
12 wks
Total
4 wks
6 wks
12 wks
Total
Loblolly
Control
42
37
37
38
0
0
0
0
P. dimorphum 50 g
70
42
60
57
0
2.6
4.3
2.3
P. dimorphum 100 g
57
38
33
43
0
4.3
10.6
5
P. dimorphum 200 g
48
43
35
42
0
4.6
4
2.8
P. irregulare 50 g
52
37
28
39
6.3
8
8.3
7.5
P. irregulare 100 g
25
12
23
20
7.6
11.6
10.3
9.8
P. irregulare 200 g
45
22
18
28
11.6
14.3
14.3
13.4
LSDy
(33)
(31)
(28)
(16)
(5.0)
(9.0)
(10.1)
(4.3)
Slash
Control
72
52
40
54
0
0
1.3
0.4
P. dimorphum 50 g
83
60
40
61
2.3
7.3
18.6
9.4
P. dimorphum 100 g
92
60
50
67
2.6
2.3
16
7
P. dimorphum 200 g
42
45
52
46
6
8.3
18.6
11
P. irregulare 50 g
53
40
50
48
4.3
15.6
17.3
12.4
P. irregulare 100 g
58
43
53
52
20
23
26.6
24.3
P. irregulare 200 g
53
42
47
47
21
20
24
21.6
LSDy
(25)
(36)
(43)
(19)
(7.0)
(12.4)
(13.2)
(4.6)
z Pythium inoculation treatments took place on December 18, 2008.
y Least significant difference .
