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                                         Information @ a Glance
  • Plant Root Simulator (PRS™) probes are comprised of an anion or cation exchange resin membrane encapsulated in a plastic holding device A high concentration of ion adsorption sites on the resin surface allows the PRS™ membrane to act as an ion sink when buried in soil, similar to a plant root surface.

  • The PRS™ assesses nutrient supply rates by continuously adsorbing charged ionic species from the soil over the burial period.

  • Green Light Company introduced the first Root Stimulator with a growth hormone to the consumer lawn and garden market in 1962.
  • Roots are essential to absorb sufficient water, nutrient salts and sugars. Root stimulator ensures a strong growth of the roots and reduces the chances of root diseases like root lice and fusarium.


  • The Plant Root Stimulator Technology utilises both anion and cation exchange membranes encapsulated in either an orange or purple plastic probe. When bried in moist soil, the PRS probe will provide an assessment of nutrient  supply rates by continuously absorbing charged ionic species over the burial period in much the same way as a plant root would.
  • PRS™ supply rates represent the flux of ions from the soil to a plant root under conditions specific to the plant root environment while chemical extractions are used as an index of the exchangeable  in the soil.


  • Root Stimulator is an economical, premium crop additive that promotes earlier growth of sturdier plants with a bigger, more vigorous root system.  Crops require only as much as 1/3 of a pint per acre. Root Stimulator enhances your crop's ability to utilize moisture and valuable soil nutrients.  Yields increase and crops are better able to withstand the yield-reducing effects of environmental stress.
  • Root Stimulator is produced by Nulex, Inc., manufacturer and distributor of America's most cost-effective and environmentally friendly liquid zinc products since 1971
  • High Yield Root Stimulator (5% nitrogen, 12% phospheric acid, 3% soluable potash) is highly effective as a plant starter. It stimulates early strong root formation -- reduces transplant shock and promotes vigorous greener growth. 16 fluid ounces.


  • Rhizotonic adds more than 60 microbiological substances that considerably speeds up the growth of a balanced root environment. Various trace elements and vitamins such as B1&B2 have been added to Rhizotonic in to stimulate the plant production of  hormones and root growth, thus providing better and stronger roots.

  • Using the Plant Root Simulator (PRS) probe, an ion exchange membrane system for measuring soil nutrient supply rate, a project was initiated in the semi-arid region to evaluate crop responses to fertilizer K on soils which are regarded as non-responsive using traditional K extraction methods.

  • Using PRS probes, the supply rates of three fields were determined using grid sampling. Maps generated from this grid-sampling pattern indicate large areas of the field that were both deficient and adequate in supply.

  • Green Light Root Stimulator & Starter Solution RTS contains a plant growth hormone which stimulates root growth and cultivates strong root structure.

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