a) Air Temperature
When temperature rises, plant metabolism increases.
Photosynthesis and respiration are temperature sensitive.
As temperature rises, the rate of respiration tends to increase faster than photosynthesis, which may result in cuttings losing weight and possibly even dying.
Rooting will be slow or success will be limited if temperatures are too low because the cuttings will not be metabolizing at a sufficiently rapid rate for optimum rooting.
... water loss by the cuttings can be reduced if enclosed in a plastic tent or greenhouse.
With respect to rooting cuttings, the best procedure is to use the same air temperature that optimizes growth of that species.
b) Root Zone Temperature
Within a temperature range, root development increases as temperatures rise.
At temperatures above 77F°, root formation was slowed and at 100F° root growth stopped.
The concentration of IBA needed to induce root growth decreased as root zone temperature increased.
Higher temperatures cannot replace the benefits of IBA but allow the product to work effectively at lower concentrations.
Increasing the root zone temperature also increased the occurrence of rotting, but disease outbreaks can be reduced through strict sanitation procedures in the propagation area.
Root zone temperature can be controlled thermostatically through recirculating water systems, heating pads, or heating cables.
c) Light Levels
A common factor acting on cuttings is light stress, which can kill unrooted cuttings.
The cuttings are stressed because of being cut from the plant and may remain so until they form roots...
Research suggests using lower light levels until root growth forms and then increasing the light to stimulate the new roots.
It is best to balance out enough light to encourage photosynthesis, and growing environment that minimizes stress.
Considerable evidence exists showing that direct light inhibits root emergence.
d) Photoperiod
The length of day/night has long been known to influence plant growth.
Longer photoperiods show an antagonism between flowering and rooting, so avoid rooting cuttings under photoperiods that promote flowering...
A very short list of the various commonly available Rooting compound Products.
Nitrozyme
Ingredients: cytokinins, vitamins A, B1, B2, B6, B12, C, D, E, K, along with carbohydrates including alginic acid and macro and trace elements
Uses: can be used for seed treatment, transplant treatment to prevent root shock and at each stage of growth through the plants life.
An important thing to remember is that you should not apply Nitrozyme or other cytokinins to dormant plants due to stress.
Superthrive
Ingredients: vitamin B1 - 0.09%, 1-naphthyl acetic acid (NAA) - 0.048%
Uses: promotes root growth in cuttings, general root growth and a predominance of female flowers.
After saying this it should not be used in flowering as it will prolong flowering period if applied after the onset of flowering.
Woods Rooting Compound
Ingredients: indole-3-butyric acid (IBA), 1-napthalene acetic acid (NAA)
Uses: as the name would suggest you use this to dip your cuttings in to so it promotes the growth of roots.
Dip 'N Grow's proven formula contains both rooting auxins recognized as root inducing (IBA and NAA).
http://www.dipngrow.com/dipngrow.html
When temperature rises, plant metabolism increases.
Photosynthesis and respiration are temperature sensitive.
As temperature rises, the rate of respiration tends to increase faster than photosynthesis, which may result in cuttings losing weight and possibly even dying.
Rooting will be slow or success will be limited if temperatures are too low because the cuttings will not be metabolizing at a sufficiently rapid rate for optimum rooting.
... water loss by the cuttings can be reduced if enclosed in a plastic tent or greenhouse.
With respect to rooting cuttings, the best procedure is to use the same air temperature that optimizes growth of that species.
b) Root Zone Temperature
Within a temperature range, root development increases as temperatures rise.
At temperatures above 77F°, root formation was slowed and at 100F° root growth stopped.
The concentration of IBA needed to induce root growth decreased as root zone temperature increased.
Higher temperatures cannot replace the benefits of IBA but allow the product to work effectively at lower concentrations.
Increasing the root zone temperature also increased the occurrence of rotting, but disease outbreaks can be reduced through strict sanitation procedures in the propagation area.
Root zone temperature can be controlled thermostatically through recirculating water systems, heating pads, or heating cables.
c) Light Levels
A common factor acting on cuttings is light stress, which can kill unrooted cuttings.
The cuttings are stressed because of being cut from the plant and may remain so until they form roots...
Research suggests using lower light levels until root growth forms and then increasing the light to stimulate the new roots.
It is best to balance out enough light to encourage photosynthesis, and growing environment that minimizes stress.
Considerable evidence exists showing that direct light inhibits root emergence.
d) Photoperiod
The length of day/night has long been known to influence plant growth.
Longer photoperiods show an antagonism between flowering and rooting, so avoid rooting cuttings under photoperiods that promote flowering...
A very short list of the various commonly available Rooting compound Products.
Nitrozyme
Ingredients: cytokinins, vitamins A, B1, B2, B6, B12, C, D, E, K, along with carbohydrates including alginic acid and macro and trace elements
Uses: can be used for seed treatment, transplant treatment to prevent root shock and at each stage of growth through the plants life.
An important thing to remember is that you should not apply Nitrozyme or other cytokinins to dormant plants due to stress.
Superthrive
Ingredients: vitamin B1 - 0.09%, 1-naphthyl acetic acid (NAA) - 0.048%
Uses: promotes root growth in cuttings, general root growth and a predominance of female flowers.
After saying this it should not be used in flowering as it will prolong flowering period if applied after the onset of flowering.
Woods Rooting Compound
Ingredients: indole-3-butyric acid (IBA), 1-napthalene acetic acid (NAA)
Uses: as the name would suggest you use this to dip your cuttings in to so it promotes the growth of roots.
Dip 'N Grow's proven formula contains both rooting auxins recognized as root inducing (IBA and NAA).
http://www.dipngrow.com/dipngrow.html
