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When transplanting rose bushes
soaking the roots for ten minutes in
IBA
at 150 ppm will help root growth
and lessen transplant root damage.
[www.personal.psu.edu/students/c/e/cem256/PGRPaper.htm]
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For the last while I have been running tests trying to get cuttings to grow roots. While I am still working away at it I wanted to post some of the more interesting results as they come up. One of the more more interesting results has been that some products (plant hormones) work best with short applications others are effecive if when used until a cuttings has developped its roots.
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Products
Power Cloning 1
Power Cloning 1 is a IBAK and NAA-AA rooting powder based on tests that were conducted on willow cuttings. |
The Injury Theory
While most rooting products will tell you to apply rooting compounds to a
cutting and then put the cutting into some grow medium I found from all my
testing (over 150 tests!) that this method actually made it harder for cuttings
to grow roots. The only effective method was a short exposure to cloning
compounds.
Why?
I was doing some reading and I figured out why. Auxins do not themselves
generate roots! The auxins 'injure' the plant cutting which overreacts by
generate roots; think of cutting your skin and getting scar tissue. When a plant
is subjected to auxins it defends itself by growing roots. But if you keep
exposing the cutting to auxins it never has time to grow roots because it keeps
getting injured and never has time to grow roots.
The more tests I run the more I am convinced that short exposure to auxins is best.
You can get an idea of what I've done if you look at my test reports on this page.
Tests
During the tests Super-grow has found that these procedures give the best
results for getting plant cuttings to grow roots:
Cloning Yam With 0.54 PPM Brassinolide
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Untreated Yam Cuttings |
Yam Cuttings Treated with 0.54 PPM Brassinolide for 30 Minutes |
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I had some very interesting results using Brassinolide at 0.54 PPM
with 6 yam cuttings. Two where not treated, two where treated for 15 minutes
and two were treated for 30 minutes. The cuttings were put in a glass with the stems in the
0.54 PPM brassinolide and the leaves where left out of the
solution. After that the yam cuttings were rinsed in water to remove
excess brassinolide and put in clear water.
The untreated yam cuttings had no roots and one even died. Only one of the yam cuttings
treated for 15 minutes had roots. Both yam cuttings treated for 30 minutes had roots.
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Cloning Yam With 160 PPM IBAK
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Untreated Cuttings |
Treated Cuttings |
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I had some very interesting results using IBAK
at 160 PPM on 12
yam cuttings for 0, 30 and 60 minutes. The cuttings were put in a
glass with the stems in the 160 PPM IBAK for the 30 and 60 minutes
and the leaves where left out of the solution. After that the yam
cuttings were rinsed in water to remove excess IBAK and then put
in clear water.
The yam control cuttings (not treated with IBAK) are on the left
and the 60 minute test cuttings on the right. All the control
cuttings have a few roots growing while two of the three test
cuttings have a whole forest of thick roots. One test cutting
has no roots at all. I also found that the 30 minute treatment
gave even better results than the 60 minute treatment.
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Cloning Willow With 300 PPM IBAK
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No Treatement |
30 Minute Treatment |
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The rooting compound IBAK continued to show how powerful it is
when I tested it with willow cuttings. The test cuttings were put in a glass with the stems in the
300 PPM IBAK for 30 minutes and the top where left out of the
solution. After that the willow cuttings were rinsed in water to remove excess IBAK
and then put in clear water. I tested 5 cuttings and compared them with 5 cuttings that
were not treated.
Of the 5 untreated willow cuttings only one had any root development and that one had very short roots.
Of the 5 IBAK treated willow cuttings 3 had roots and they roots were much longer.
Follow Up Test
A second test was run with 2 groups of 5 cuttings. In this test none of the untreated cuttings
developed any roots while all of the cuttings treated with IBAK at 300 PPM for 30 minutes
had root developement.
With the two tests combined 8 of 10 treated cuttings developed roots while only
1 of 10 untreated cuttings had roots.
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Cloning Willow With 300 PPM IBAK and 250 PPM NAA-AA
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IBAK and NAA-AA Treated Cuttings |
IBAK Treated Cuttings |
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In a previous test IBAK was tested and it had some very good results.
This is a follow up test where IBAK and NAA-AA where combined. Willow cuttings of around 4.75 inches
where put in about 4 inches of 300 PPM IBAK for 30 minutes. After 30 minutes they cuttings were rinsed
in water and then half were put in 250 PPM of NAA-AA for 30 minutes. The IBAK NAA-AA combined treatment
showed much better results with the cuttings growing many more roots and much longer roots.
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