phytohormone
plant hormone
growth regulator

Includes growth regulators etc., that are present in the coverings around the embryo.

"And do it immediately, to take advantage of the growth regulators in the plant that are telling it to grow."

Plants produce hormones and other growth regulators which act to signal a physiological response in their tissues.

Auxins were the first class of growth regulators discovered.

It has been shown to reduce the effects of "plant growth regulators," unlike other medium.

No synthetic pesticides, fertilizers or growth regulators are used in their ingredients.

It has been found that mixtures of growth regulators are often more effective than one alone.

Many growth regulators deteriorate rapidly, and fresh solutions are made up as needed.

It may also be treated with growth regulators at this time.

There are however concerns about the carcinogenicity of some of these growth regulators.