Mineral Fertiliser and Soil Conditioner with Extra Calcium and Sulphur for Dark or Crusted Soils

NatraMin Cal-S is formulated with extra calcium and sulphur for dark, sodic, cloddy or crusting soils with a calcium imbalance and low in sulphur. It is suitable to use in small crops, cotton, lucerne, pasture and grain.

NatraMin Cal-S is a cost effective alternative to Gypsum as a soil conditioner and contains high levels of silica as well as other essential minerals and trace elements. All blends of NatraMin are formulated to stimulate microbe and worm activity in your soil,  helping to release locked up nutrients for your crop.

Provides bio-activated broad spectrum minerals plus extra calcium and sulphur

Replaces the use of Gypsum

Improves Calcium to Magnesium ratios

Assists to break up heavy compacted soil and improve soil structure

Assists to build humus levels and increase moisture retention

Improves root development, plant growth and yields

Stimulates microbe and worm activity helping to unlock previously applied nutrients

Typical Analysis

NatraMin Cal-S
Calcium (Ca) %10.7
Phosphorus (P) %0.06
Sulphur (S) %5.8
Potassium (K) %2.0
Magnesium (Mg) %1.7
Silicon (Si) %17.3
Iron (Fe) %3.7
Carbon (C) ppm2300
Manganese (Mn) ppm660
Zinc (Zn) ppm100
Copper (Cu) ppm40
Cobalt (Co) ppm16
Boron (B) ppm13
Molybdenum (Mo) ppm4

Available In

20kg Bags, 1 tonne Bulk Bags and Loose Bulk

Customer Testimonials

We’ve used NatraMin Cal-S for over 5 years as it delivers a wide variety of base minerals that we were looking for.  The Cal-S suits our black soils and calcium is a key focus in our farming system for yield.  Rather than increasing nitrogen we utilise more calcium for yield and in the process, we achieve a healthier crop, maybe not as ‘showy’, but with fewer pests and diseases. We’re growing good crops with cotton, yielding up to 15.4 bales/ha and healthy crops with no insect pressure and not having to spray. 

– Geoff Brown, Quirindi NSW

Seeing is believing and we had the advantage to see where NatraMin Cal-S had been used for 5 years by the previous owner on part of our red clay cultivation.  We had an obvious comparison side by side.  This red clay at its best would produce ‘beer can’ size clods and now this ground has become our highest quality and yielding lucerne.  In the lucerne, the NatraMin generates good results with the additional source of calcium and sulphur on top of the soil structural benefits.  Cal-S is applied prior to sowing lucerne.

– Tim Freeman, Denman NSW

Our agronomist recommended I give the NatraMin Cal-S a go due to his success with other clients as the Cal-S delivers a lot more than just the calcium and sulphur in gypsum. At this time of year, we’d normally cut around 7.5t/ha. With the help of NatraMin Cal-S our last two cuts have increased to 10t/ha. One of these cuts was with 100% irrigation and the second cut was all rainfall so we were able to get a real comparison of the results of Cal-S despite the rain. The result of a 34% yield increase is a significant outcome.

– Peter Dunn, Rockhampton QLD

Did you know?

AgSolutions can assist you to design a simple to follow soil management plan to suit the specific requirements of your soil, and subsequently your crops and livestock. Whether you follow conventional or organic farming practices, or anything in between, our programs are designed to restore soil fertility, helping to maximise yield and productivity.

Application Guide

The NatraMin range is made from natural rock minerals and trace elements that do not require a withholding period before livestock or horse can graze. All NatraMin blends are non-leaching and may be applied at any stage of the growing cycle, on existing crops, or for best results, 4-6 weeks before planting.