0soyoung
Imperial Masterpiece
I have just potted 16 lodgpole pines (P. contorta var. latifolia) seedlings, to start my repotting-plus experiment (pretty much as I described in the “Let’s All Get Some Answers and Not Wait for the Book” thread):
o repot ‘+‘ = Aug/Sep
o repot ‘-‘ = spring
o rhizo ‘+‘ = nested clear orchid pot & proLeague
o rhizo ‘-‘ = MVP in black pot
o cuts ‘+’ = cuts at stem base done at repotting
o cuts ‘-‘ = do nothing
o shoot pru ‘+’ = nip shoot tip to just remove terminal leaves
o shoot pru ‘-‘ = do nothing
o defoliate ‘+’ = remove fraction of leaves by cutting through petiole
o defoliate ‘-‘ = do nothing
I decided that I will try to measure root growth, in addition to monitoring the ‘above ground’ growth. To facilitate measuring root growth, I am using 6 inch clear orchid pots (filled with dark colored Turface proLeague Heritage Red to contrast with growing roots) as a new experiment factor, ‘rhizo’. These ‘rhizotrons’ are nested within a gallon size black plastic pot. I will periodically remove them to estimate the root growth. The other trees (not in clear orchid pots) are potted in one gallon black plastic pots filled with Turface MVP.
I cut off the ‘needles’ from one side of the central leader of those trees getting the defoliation treatment. The idea is to see if back budding preferentially occurs where needles are (ala mugo pines) or where they are not (ala JBP). I left any existing buds untouched.
Lastly, I gave each 1 teaspoon of Osmocote 14-14-14.
tree | repot | rhizo | cuts | shoot pru | defol |
1 | - | - | - | + | + |
2 | + | - | - | - | - |
3 | - | + | - | - | + |
4 | + | + | - | + | - |
5 | - | - | + | + | - |
6 | + | - | + | - | + |
7 | - | + | + | - | - |
8 | + | + | + | + | + |
9 | - | - | - | - | + |
10 | + | - | - | + | - |
11 | - | + | - | + | + |
12 | + | + | - | - | - |
13 | - | - | + | - | - |
14 | + | - | + | + | + |
15 | - | + | + | + | - |
16 | + | + | + | - | + |
o repot ‘+‘ = Aug/Sep
o repot ‘-‘ = spring
o rhizo ‘+‘ = nested clear orchid pot & proLeague
o rhizo ‘-‘ = MVP in black pot
o cuts ‘+’ = cuts at stem base done at repotting
o cuts ‘-‘ = do nothing
o shoot pru ‘+’ = nip shoot tip to just remove terminal leaves
o shoot pru ‘-‘ = do nothing
o defoliate ‘+’ = remove fraction of leaves by cutting through petiole
o defoliate ‘-‘ = do nothing
I decided that I will try to measure root growth, in addition to monitoring the ‘above ground’ growth. To facilitate measuring root growth, I am using 6 inch clear orchid pots (filled with dark colored Turface proLeague Heritage Red to contrast with growing roots) as a new experiment factor, ‘rhizo’. These ‘rhizotrons’ are nested within a gallon size black plastic pot. I will periodically remove them to estimate the root growth. The other trees (not in clear orchid pots) are potted in one gallon black plastic pots filled with Turface MVP.
I cut off the ‘needles’ from one side of the central leader of those trees getting the defoliation treatment. The idea is to see if back budding preferentially occurs where needles are (ala mugo pines) or where they are not (ala JBP). I left any existing buds untouched.
Lastly, I gave each 1 teaspoon of Osmocote 14-14-14.
tree id | base dia (mm) | defol | cuts | wt (gm) | clr pot |
1 | 3.45 | yes | no | 4 | no |
2 | 4.93 | no | no | 11 | no |
3 | 6.55 | yes | no | 24 | yes |
4 | 8.65 | no | no | 43 | yes |
5 | 5 | no | yes | 13 | no |
6 | 4.09 | yes | no | 6 | no |
7 | 5.68 | no | yes | 16 | yes |
8 | 4.2 | yes | no | 15 | yes |
9 | 3.37 | yes | no | 21 | no |
10 | 6.01 | no | no | 38 | no |
11 | 5.46 | yes | no | 11 | yes |
12 | 5.06 | no | no | 14 | yes |
13 | 5.6 | no | yes | 14 | no |
14 | 5.75 | yes | no | 16 | no |
15 | 4.28 | no | yes | 16 | yes |
16 | 5.9 | yes | no | 14 | yes |