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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]


Products Tests

Cloning Plant Cuttings

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.

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

Untreated Yam Cuttings

Yam Cuttings Treated with 0.54 PPM Brassinolide for 30 Minutes

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.

Cloning Yam With 160 PPM IBAK

Untreated Cuttings

Treated Cuttings

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.

Cloning Willow With 300 PPM IBAK

No Treatement

30 Minute Treatment

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.

Cloning Willow With 300 PPM IBAK and 250 PPM NAA-AA

IBAK and NAA-AA Treated Cuttings

IBAK Treated Cuttings

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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