The idea of using hormone biostirnulants to improve the growth and development of plants first arose with the discovery in the 1930’s of auxins. Auxins, which generally resemble indoleacetic acid (IAA), are naturally-occurring substances synthesized from tryptophan and found in many plant parts including leaf primordial (first leaf on shoots), young leaves and developing seeds. […]
The rhizosphere is the zone of soil that surrounds the plant root. This zone is where the biology and the chemistry of the soil are influenced by the root – but, there is no distinct edge. The zone is about 1mm wide and is an area of intense biological and chemical activity. This area is […]
It is important to understand that biostimulants do not act singly but rather act in conjunction with, or in opposition to, each other such that growth and development represents the net effect of biostimulant balance. Generally the hormonal biostimulants are thought to include five main classes: auxins, gibberellins, cytokinins, abscisic acid and ethylene. There are […]
