Guano Australia offers a comprehensive range of Phosphorus fertilisers so you can make the right choice for your property. Contact our team to learn more.
Citric Soluble Phosphorus Versus Water Soluble Phosphorus
Farmers who are committed to improving soil health and maximising crop yields can really benefit from an effective Phosphorus strategy. Whilst finding and using a Phosphorus fertiliser may seem simple, it really pays to understand the process in more depth.
Here, the Guano Australia team explores the differences between fast and slow release Phosphorus and the choices which can really benefit your soil.
The 3 Types of Phosphorus Fertiliser
Phosphorus fertiliser falls into three main categories: water soluble, citric soluble, and organic. Water soluble being for example Single Super Phosphate or DAP, citric being Guano Gold, and Rock Phosphates and organic being manures and compost.
All these types of Phosphorus have their place in the farming system. The key is knowing their benefits and the right time and place to use each one. Simply put, its all based around the speed of release and any potentially Phosphorus-hostile elements of your soil.
Soil Types and Citric Components
In soil that is hostile or has a higher Phosphorus buffering (PBI) index, water soluble Phosphorus would not be an effective choice. With Guano Gold® and rock-based phosphates, it comes down to the citric and non-citric components.
Providing a higher citric soluble level will give a drip feed of Phosphorus, but still enough to get your crop started. So, this choice is versatile in the sense that it offers both a quick and slow release source of Phosphorus.
How Phosphorus Release Benefits Soil Health
The above graph has been created to give a visual indication of how the Phosphorus (P) in the Madura Guano Gold® product is released into the soil medium. A laboratory experiment was conducted by SWEP to try and replicate the way, over time, the soil around the plant’s root zone changes due to growth of the plant and exudates secreted by the plant roots.
The first reading of 40% is the amount of P released instantly once Guano Gold-Kwik Start® is exposed to a 2% citric soluble solution. This equates to 5.5kg per 10kg of P private. The citric soluble solution was then increased by 0.5% gradients. This increase is an indicator to the time that P becomes available after sowing or top dressing. The time would be influenced by soil temperature, type of crop and other soil chemistry, however the graph gives a fair indication of the P release, so it can be used as a tool by farmers and agronomists to predict release of Phosphorus.
In individual farming situations, overall the graph indicates 80% of the applied P is released over the crop cycle with 40% of that being quick and the remaining P as shown by the graph constantly drip feeding into the soil.
Taking this information and applying to a cropping program if 10kg of P is required per hectare for a crop then 90kg of Madura Guano Gold-Kwik Start® would supply this amount of P and provide 2.5 kg/hectare of carryover residual P into the next crop.
The Soluble Phosphorus Fertiliser That’s Right For You
Both citric soluble Phosphorus and water-soluble Phosphorus offer a range of unique benefits for Australian farmers. To find a comprehensive selection of products, backed by a team of industry experts, shop with Guano Australia.
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