Artificial plant hormones are synthetic compounds that are used in place of, or in addition to, naturally occurring plant hormones. They are used to control or alter the growth, development, and other processes of plants, such as flowering, fruit-setting, and ripening. Examples of artificial plant hormones include auxins (e.g., indole-3-acetic acid, IAA), gibberellins, cytokinins, abscisic acid, ethylene, and brassinosteroids. Artificial hormones are used in agriculture and horticulture to control the growth and development of plants, and to increase yields. They are also used in research, to study the effects of exogenous hormones on plant growth and development.
Auxins
It is used in the agriculture field to prevent the dropping of premeture fruits, for the sprouting of roots and as a weedicide.
Gibbereillins
It is used for increasing fruit size in grapes and apple and also for preventing ripening of fruits to assistant marketing.
Ethylene
Ethylene is used for the flowering of pineapple plants at a time and for the ripening of tomato,lemon,orange etc Ethyphone, a chemical which is available in liquid form get transformed into ethylene ,when it used in rubber trees it increase the production of latex.
Abscisic acid
It is used for the harvesting fruits at the same time.