Not that it will do much good explaining it.

Auxin; cytokinin; ethylene; gibberellin; abscisic acid. These five
chemicals, in extremely minute amounts, regulate the growth of trees. They
are termed growth regulators. They regulate growth. Growth regulator is an
tree term. Hormone is an animal term. Heal is an animal term. Trees seal
and not heal wounds. Fertilizer is a plant term as well.

Where do babies come from? Believe it or not, it was only a short time ago
when people thought females were born with small incomplete babies inside.
When the male added the "magic" ingredients, a baby grew. Farmers knew that
substances called fertilizers made plants grow. So, grow is grow, they
thought, and fertilizers must be male ingredients. Until this day people
say the male fertilizes the female. (Is milk from the mother a fertilizer?
It surely makes the baby grow.) Fertilizer is a plant term that has made
its way into animal terms. Fertilizers add elements essential for healthy
growth. Fertilizers do not add an energy source. Maybe when some people
learn where babies come from the fertilizer myth will go away. Maybe! Just
maybe.

In other words. Plant people have used more animal terms than animal people
have used plant terms. Here are only a few examples: Hormones are produced
by ductless glands. Growth regulators are produced by many plant cells.
Babies start when a swimming sperm connects with an egg in the fallopian
tube of animals. Fertilizer is a substance that promotes growth. Before we
knew where babies came from, we thought that materials deposited by males
stimulated growth of a very small already-formed individual. Time to stop
borrowing terms! Fertilizers and babies. Hormones and growth regulators.

Back to growth regulators. Why by making trees grow faster does not
increase the quality of the wood. When cambial cells produce many new cells
very rapidly, the cells seldom mature in the axial plane. Gibberellin can
only work so fast. Rapid growth usually results in wider growth increments
that have many shorter cells. When cells mature at their normal rate and
time, they elongate. We do not know, but we believe, that growth
regulators, and especially gibberellin, can only work so fast. They found
that out quick when they tried to process very fast growing trees for pulp.

--
Sincerely,
John A. Keslick, Jr.
Consulting Forester & Tree Expert
http://home.ccil.org/~treeman
and www.treedictionary.com
Beware of so-called tree experts who do not understand tree biology.
Storms, fires, floods, earthquakes, and volcanic eruptions keep reminding us
that we are not the boss.