What is a synthetic plant growth regulator?

A growth regulator, plant growth regulator, or PGR, is a natural or synthetic chemical that is sprayed or otherwise applied to a seed or plant in order to alter its characteristics. They are sometimes referred to as plant hormones. read more

When natural or synthetic substances used in this manner, they are called Plant Growth Regulators. The application of plant growth regulators in agriculture has started in the1930s in the USA . Ethylene, a naturally occurring substance, is one of the first plant growth regulators being discovered and used successfully for enhancing flower production in pineapple. Its toxic effects to human beings are low. read more

In agriculture and forestry are herbicides used to stop the growth of unwanted plants – like the presence of yield-reducing weeds. Auxin derivatives like 2,4-dichlorphenoxy acidic acid (2,4-D) or 2,4,5-trichlorphenoxy acidic acid (2,4,5-T) proved to be herbicides effecting selectively dicots. read more