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Pro-Cal

Liquid calcium carbonate for pH and calcium base saturation, micronized to move faster than lime.

Category visual
Pro-Cal: CalciumCategory guide. Not a package likeness.
Label rate

2 to 12 gal/ac, CEC-driven. In-furrow hard max 2 gal/ac.

Delivered price

Free delivery. The price you see is the price you pay.
ContainerPer gallonPer acre at label rateContainer total
5 gal jug$33.60/gal$100.80/ac$168
55 gal drum$15.73/gal$47.19/ac$865.15
275 gal tote$11.27/gal$33.81/ac$3,099.25
BulkQuoted through your agronomist

Guaranteed analysis

Micronized calcium carbonate suspension, roughly 1.5 lb Ca per gallon.

What it does

Micronized calcium carbonate in suspension reaches a fraction of the particle size of ag lime, so it reacts fast and moves calcium onto the exchange instead of sitting on the surface for three years. The rate follows the formula: (target Ca percent minus current Ca percent) divided by CEC, times a CEC factor.

What it will not do

Skip it above 75 percent

If calcium base saturation already tests at or above 75 percent and pH is in range, we skip Pro-Cal and run the program without it. Buying calcium you do not need returns nothing.

Trial data and expected range

Micronized calcium-carbonate foliar restored photosynthesis and PSII efficiency under drought in controlled work.

Source:
Attia et al. 2014, micronized calcite particle film
Confidence:
cited mechanism
Caveat:
Expected range on row crops. Strip-trial it.

Tank-mix and handling

Calcium keeps its own pass. RED: never tank-mix with glyphosate (calcium ties up the glyphosate) or with high-salt phosphate loads like 3-18-18+ (they form a jelly). Stream or band on the row. Jar-test any new ratio.

Pro-Cal usually ships inside the hay and pasture foundation reset. Build the whole program off your soil test and see it in context.

See the program