The difference between IAA and IBA

The mechanism of action of IAA (Indole-3-Acetic Acid) is to promote cell division, elongation and expansion.

Low

concentration and Gibberellic acid and other pesticides synergistically

promote the growth and development of plants. High concentration

induces the production of endogenous ethylene and promotes the

maturation and senescence of plant tissues or organs.

It is the

earliest rooting agent used in agriculture and a broad-spectrum

multi-purpose plant growth regulator. But it is easily degraded inside

and outside the plant.

The basic physiological functions of IBA (Indole-3-Butyric Acid) are similar to IAA (Indole-3-Acetic Acid).

After being absorbed by plants, it is not easy to conduct in the body,

and often stays in the treatment part, so it is mainly used to promote

the rooting of cuttings. Although it is more stable than indole acetic

acid, it is easy to decompose when exposed to light.

Single

use has rooting effect on a variety of crops, but mixed with other plant

growth regulators with rooting effect, the effect is better. For example, IAA or IBA is used to promote fine, sparse and branched roots when cuttings take root; NAA (Naphthylacetic Acid) can induce thick, endoplasmic multi-branched roots, etc., so their combination is often used in production.