Zeolite is the most effective way to supplement
root zone CEC and reduce fertilizer usage.
Zeolites are slow release fertilisers. Plant nutrients such
as nitrogen and potassium are held by the negatively charged
clinoptilolite structure, and released on demand.
Zeolites increase nutrient retention, reduce environmental
nutrient losses and reduce fertilizer requirements by establishing
a replenishable and balanced nutrient supply in the plant root
zone.
Zeolite adds a permanent water reservoir, providing prolonged
moisture holding power during dry periods, and it promotes rapid
re-wetting and improved lateral spread of water in the root
zone during irrigation.
Zeolite is very porous with an incredibly large surface area.
The selectivity of zeolite for ammonium helps buffer the soil
and prevents toxicity, which occurs when excess ammonium is
applied. This property allows the grower to use this less costly
form of nitrogen in larger and less frequent applications during
the growing season. The retention and timely release of needed
nutrients by zeolite improves overall crop yield. It provides
a lasting reservoir of nutrients allowing the user to reduce
added fertilization while achieving better plant and vegetable
performance.
The basis for Zeolite’s stable inorganic structure is
the stacking of one alumina to five silica tetrahedra in a unique
symmetrical arrangement.This symmetrical stacking results in
an open framework with a void space which retains water. The
net negative charge within the voids holds the cations for the
cation exchange capacity. The open and negatively charged framework
results in Zeolite’s ability to exchange plant nutrients
into and out of the stable three dimensional honeycomb framework.
Advantages of Natural Zeolites:
• Increases cation exchange capacity (CEC)
• Reduces fertilizer usage—in some cases, nitrogen
usage reduced by 25%
• Reduces water usage
• Provides available potassium (ion exchanged from the
Zeolite structure)
• Increases phosphorous utilization and availability by
89%
• Cost effective
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