PACIFIC FERTILISER

Tag: rpr

High Analysis Rock Phosphate
Pacific Fertiliser has been refining, blending and selling domestic soft rock phosphate products in Australia for over 10 years.

We have recently released some new high performance soft rock phosphate products suitable for the agricultural applications and blends. All of the following products are offered in fine powder, air seeder grade or aerial grade granules. For most clients we use the soft rock phosphate in tailored blends with sulphur, biology, humates and other trace elements.
- SRP-13ProPlus – using the Agriflex rock phosphate from Ardmore we can provide a high analysis phosphate product in our sustainable fertiliser range (DAPR).
- SRP-12Plus – Blending two domestic rock phosphate products we provide a high analysis phosphate product with better solubility for direct application and blends.
- SRP11-Plus – Blending two domestic rock phosphate products we provide a high analysis phosphate product with better solubility for direct application and blends.
- SRP10 – a 100% colloidal rock phosphate product with very citrate high solubility. The results from applications of this cost effective product over the last ten years, have been proven repeatedly in the field by many large producers.
For more information on these products please follow the link.

Our products are refined and sold from Brisbane QLD and Cowra NSW in bulk and bulkbags. Most phosphate products are available in power and granular forms.
November 16, 2022
Phosphate Rock Gypsum Blends

Pacific Fertiliser can blend soft rock phosphate with natural gypsum to make an organic single super blend. The application rates for phosphorous below are equivalent 125kg/ha of Single Super

70/30 blend – (0-7-0-5) – 165kg/ha

60/40 blend – (0-6-0-7) – 193kg/ha

50/50 blend – (0-5-0-9) – 232kg/ha

Generally for the organic blends it is best to go on a bit heavier due to the slower release of the phosphorous and sulphur. Pacific Fertiliser can also add biology, and sulphur to increase nutrients and reactivity.

May 25, 2018
Granular Aerial Grade Soft Rock Phosphate
Pacific Fertiliser releases a new Granular aerial grade phosphate product.

To compliment the existing 2-4mm granular, milled and fine screened soft rock phosphate (SRP) products, the larger 4-12mm granules offer the following:
- lower cost compared to 2-4mm phosphate granules
- larger granules assist with product flow in aircraft hoppers and small conical spreaders
- granular phsophate uses super fine grade natural SRP to make the larger granules so once wet the solubility is still good
- lower dust compared to powdered product
- ability to blend it with other granulated products to make a single super equivalent and/or add liquid biology stimulants
See some of the current sustainable blends we supply.
July 21, 2016
Organic Farming

Organic Passion – Landline Episode on organic farming and soft rock phosphate application

Video Link

Pacific Fertiliser supplies a lot of organic products and blends suitable for organic agriculture.

August 20, 2015
Prilled Soft Rock Phosphate

Pacific Fertiliser is now offering a quality prilled soft rock product – RPRP – available form its Brisbane plant.

RPRP a granular 2-4mm phosphate product.

July 16, 2015
Humates with Soft Rock Phosphate

Pacific Fertiliser is trialing blending its soft rock phosphate fines with humates to increase the effectiveness of the blended product and increase the solubility of the soft rock by upto 2.5 times.

April 14, 2015
Fine Grade Phosphate Rock

Pacific Fertiliser releases its new RPR2 phsophate rock product.

The RPR2 product is sub 2mm natural phosphate rock.

The finer grade RPR makes it perfect for applications where high solubility and fast uptake is critical.

June 23, 2014
Aerial Grade RPR

Pacific Fertiliser releases a new natural aerial grade phosphate rock product ex Brisbane.

The RPR210 is a 2-10mm granular high quality soft rock phosphate is suitable for aerial spreading.

June 23, 2014
New Zealand Phosphate Rock

Pacific Fertiliser can provide competitive phosphate rock products and blends to New Zealand.

The phosphate can be blended with sulphur and other minerals and trace elements to meet your requirements. We can also provide aerial grade blends suitable for aerial spreading.

Products are available in bulk or Bulkbags.

April 26, 2014
Phosphate and Sulphur Blends

Agricultural production removes plant nutrients; therefore, these must be replaced to sustain production. Phosphorus (P) and nitrogen (N) are perhaps the two nutrients of greater importance because Australian soils are inherently low in these elements. In the case of P, reactive phosphate rock (RPR) is the most practical fertiliser to replace P in broad-acre organic farming (Penfold 2000). For N, the optimal replacement strategy is legume N2 fixation; however, this process is highly dependent on P nutrition (Donald and Williams 1956). Hence, replacing P is crucial to sustaining productive organic cropping systems.

Phosphate rock (PR) is an allowed input for managing phosphate fertility on organic farms and is potentially suitable for mildly acidic to strongly acidic soils, because acidity is required to breakdown the phosphate rock to release P in a form that is available to plants. However, PR is generally only effective under substantially higher rainfall conditions than occur in the southern cropping regions of Australia, where previous work has sometime found it to be ineffective. In many soils, elemental sulphur (S) is naturally oxidised by soil bacteria to produce acid. Mixing PR with S may thus have a positive role in improving the effectiveness of PR in the southern cropping areas.

April 26, 2014