Guano Organic Fertilizer News

Low Magnesium in Soil is at Crisis Point - here’s how to fix it

Magnesium deficiency is coming to crisis point. Low magnesium content in foods has up to 50% of Australians deficient. Here’s how to correct it now.

Why a Natural Source of Magnesium Fertiliser is Vital - to Plants, and to Australia

While magnesium is just one of six vital macronutrients for crop health, the diminished magnesium levels in Australian soils is fast becoming a national health crisis. *  Like other developed countries, Australians are seeing record lows in magnesium intake, likely attributed to the lower levels of plant available magnesium in soil. Most consumers get around 75% of their daily magnesium intake from cereals.  Australia’s cereal farmers are at risk of consumer backlash if they don’t increase the magnesium content of their grains.  It’s only a matter of time.


Learn more about Guano Liquid Gold ® with KMS ® – the natural and nutritious way to grow.


Magnesium in agriculture

Magnesium in agriculture boosts enzyme activity and the structural stabilisation of tissue. Magnesium in plants is mostly considered key to assisting with the photosynthetic process, and producing the chlorophyll needed to create healthy LOOKING plants. Magnesium deficiency in soil has been linked to phenotypic and physiological changes in plant cell structure impacting vital plant secondary metabolism. ^  In short, a lack of magnesium creates weak plants vulnerable to disease and environmental factors, and poor harvest.  Most pasture farmers know the risk of low magnesium in soil through grass tetany in livestock.  Now magnesium deficiency is creeping out of the pasture and onto supermarket shelves. Your farm’s magnesium levels could be low and contributing to a potential national health crisis.


Magnesium deficiency in developed countries

Magnesium deficiency was first dubbed a “first world problem” after a Chinese study found that the magnesium levels in cereal seeds have declined markedly, resulting in up to two thirds of the population in developed nations consuming less magnesium than is required for healthy muscle, heart, gut and liver function. # There has not been the same level of depletion in developing countries where sustainable farming is still the first choice due to the price of synthetic chemicals.

What does that mean for grain and “greens” farmers?

The burgeoning “plant-based diet” trend isn’t just about eating less meat.  It’s a symbol of consumers becoming more aware of the nutritional values of foods.  When our client Waltanna Farms moved to sustainable farming back in the 80s, they saw that there was a shift coming to better land management and became “early adopters.”  Imagine if you’d jumped on sustainable farming back in the day – what a different market value you’d enjoy right now. Consumers are demanding more nutritious food.  More and more Australians are suffering magnesium deficiency.  The time to serve up better food is upon us.

Correcting magnesium deficiency in soil – how to get more magnesium into your soil...and how NOT TO

It’s not as simple as dumping more synthetic fertiliser into your fields and hoping for the best.  In fact, synthetic fertilisers may be a major contributing factor in Australia’s “unbalanced soils”.  Like magnesium, the delicate balance of micro and macro nutrients in soil is only maintained by creating a balance that fosters optimum chemical interactions.  Dumping excessive levels of synthetic fertiliser may wipe out any balance within the soil, and leaves farmers, and their customers, vulnerable to low-nutrition yields.

Is magnesium mobile in soil?

Unfortunately, yes.  Magnesium is highly mobile in soil and this can result in diminished levels in the soil especially after high rainfall, when young plants need it most.  In balance with the right levels of sulphur, magnesium becomes less mobile and more absorbent through both soil and leaves.  Foliar absorption can improve plant nutrition, especially early in the growing cycle. In orchards, magnesium is critical at flower set leading to fruit set, magnesium combines with boron and calcium increase fruit set vigour.  Magnesium helps maintain fruit size and fruit quality.   Magnesium does this by assisting in the metabolism of carbohydrates and in cell membrane stabilisation. 

Guano Liquid Gold ® with KMS ® boosts plant nutrition through root uptake in the soil and via easy, spray on micro particulates that cling to young leaves via our patented surfactant.  More absorption when the plant needs it means more robust plants and more nutritious products.

How to get more magnesium into your soil, the scientific way

To ensure optimum uptake of magnesium, your soil will need the right balance of micro and macro nutrients.  Have you seen a high or low number on your soil test?  While it might be tempting to simply amp up the supply of that nutrient, this may simply make things worse.  Finding balance in your soil is key to finding results in your harvest.  In three simple steps, you can rehabilitate your soil in under a year.

  1. Get your soil tested 
  2. Speak with an agronomist about the results (Click here for a free consultation)
  3. Apply the RIGHT sustainable fertiliser to balance your soil, this season and next.


Magnesium rich, sustainable fertiliser could avert a health crisis

Choosing a magnesium rich fertiliser could avert a national health crisis here in Australia.  It could also help you sell better at market, with green, robust plants that boast the nutritional values that are in high demand here in Australia.  It’s win-win.  Go for Guano Liquid Gold ® with KMS ® this season.


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Being so far away from our markets, durability is critical and the Silica is really good in terms of hardening up the skin and making the melons better to transport.Ord River WA irrigator David Menzel-Barradale
The problem with many organic fertilisers is that they have very low rates of nutrients, meaning you need to put out high rates. A product like Guano Gold has 12pc P, whereas Guano Sulphur Gold has 10.5pc P, obviously with additional sulphur. These figures compare very favourably with something like a single superphosphate product. Agronomically, it’s a good product in any setting, not just for organic producers.Garry Allison, Landmark Agronomist. Mount Gambier, SA
For the broadacre croppers, Guano Gold works really well in paddocks where they have had issues with nutrient tie-up. He said the majority of synthetic P products have large rates of water soluble P. The problem with that is that you can have instances where it ends up tying up zinc in the soil so you run into problems with zinc deficiencies. Not only does the slow release nature of the Guano Gold product work well over the entire season, it also contains zinc for the crop as well as the other nutrients.Moree agronomist Rob Drewitt
We strongly recommend the Guano Gold products to fellow farmers if they are looking at improving their Calcium and Silica levels using various methods of application such as foliar and granular.James and Aimee Thomas Falkirk Macadamia Farm
I have recommended Guano Gold products for 20 years and in all cases had excellent long-term results increasing in pasture productivity.Paul Baguely - PB Ag Consulting
They are high analysis products so you get your nutrients without having to put too much fertiliser out.Anthony Beutel, Googa Farm Organics
We have known since the 1930s that phosphorus is one of the main elements required to grow a successful crop of not just the (flax) plant but the seed. It was one of those products that was first out in a granular type form and it was so much easier to get an even coverage over the ground, rather than a powder form. Later on the product became a little more refined, so we could put it through our air-seeder. We also broadcast some of it, prior to seeding, when we are cultivating ground. The products have great characteristics in relation to phosphate and silica, which is exactly what we need for flax.Waltanna Farms flax-seed farmer & Ambassador for Guano Australia, Michael Nagorcka

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