Rótarhormón fyrir græðlinga úr víðiberki eða víðigreinum

Uppskrift að heimatilbúnu rótarhormónaseyði (rótarhvata): 

Innihald: Fyrsta árs greinar af víði eða ösp. Börkur á einnig að virka.

Aðferð:

1. Greinar klipptar niður í nokkurra cm búta / börkur rifinn niður.
2. Sett í ílát, t.d. glas, og sjóðandi vatni hellt yfir.
3. Látið kólna yfir nótt.
4. Síað, t.d. með kaffifilter.
5. Græðlingar látnir standa í vökvanum í nokkra klukkutíma eða yfir nótt áður en þeim er stungið niður. Einnig má vökva græðlinga sem stungið hefur verið í niður með víðisvatninu, mælt er með því að gera það tvisvar til að hámarka árangur.

Geyma má vökvann í lokuðu íláti í ísskáp í allt að tvo mánuði.

Meira um hormónaseyði vefnum Deep Green Permaculture:

“Willow Water” – How it Works
“Willow Water” is a homebrew plant rooting hormone that is easily made and can be used to increase the strike rate (growth of roots) of cuttings that you’re trying to propagate. 

The way that it works can be attributed to two substances that can be found within the Salix (Willow) species, namely, indolebutyric acid (IBA) and Salicylic acid (SA). 

Indolebutyric acid (IBA) is a plant hormone that stimulates root growth. It is present in high concentrations in the growing tips of willow branches. By using the actively growing parts of a willow branch, cutting them, and soaking them in water, you can get significant quantities of IBA to leach out into the water. 

Salicylic acid (SA) (which is a chemical similar to the headache medicine Aspirin) is a plant hormone which is involved in signalling a plant’s defences, it is involved in the process of “systemic acquired resistance” (SAR) – where an attack on one part of the plant induces a resistance response to pathogens (triggers the plant’s internal defences) in other parts of the plant. It can also trigger a defence response in nearby plants by converting the salicylic acid into a volatile chemical form. 

When you make willow water, both salicylic acid and IBA leach into the water, and both have a beneficial effect when used for the propagation of cuttings. One of the biggest threats to newly propagated cuttings is infection by bacteria and fungi. Salicylic acid helps plants to fight off infection, and can thus give cuttings a better chance of survival. Plants, when attacked by infectious agents, often do not produce salicylic acid quickly enough to defend themselves, so providing the acid in water can be particularly beneficial.

Græðlingar af hegg / heggvið (Prunus padus) um miðjan júlí.

Í maí árið eftir eru þeir flestir lifandi - ekki voru notuð rótarhormón.