Weekly Shop Hours: Monday - Friday • 8:30AM - 1:30PM Click here for more info.

Soft Rock Phosphate

R31 - R545
INFORMATION

Description

Our organically certified Soft Rock Phosphate mined in South Africa, also known as rock dust, is a slow release organic phosphate amendment that will, reduce the number of pests in your garden, increase your yield, as well as improve the flavour of your harvest.

This substance is known to reduce nitrogen loss, as well as control odour that occurs as a result of using organic fertilizers such as manure or fish emulsion extracts.

Rock Phosphate is generally used in the long run in obtaining healthy living soil(what your microbes slowly feed on), it also raises the natural levels of phosphorus and calcium which will reward you with large, resinous flowers.

 

Additional Information

Over the years, sedimentation from cold mineral rich fish waters along the West Coast of the Cape has formed valuable deposits which became further enriched by fossil marine and terrestrial animals who contributed threefold to that unique, now shallowly covered phosphate occurrence as it is mined today.

Altogether 300 different species of prehistoric animals and a number of plants have been identified so far. The result is a nutrient and mineral rich organic fertilizer that is low cost and extremely effective - try it out and see how much it benefits your living soil!

 

Key elements of rock phosphate

Phosphorus

The total phosphorus content amounts to 8-10% P - expressed as tri-calcium phosphate - 63% of the product is in this form. By repeated extraction all of it is soluble in 2% citric acid. As an indication of the immediately available fraction, the first extraction dissolves 5% P.


Calcium

This rock phosphate contains 20% calcium. Because of the linkage of phosphorus with calcium, its neutralising effect increases by the amount of phosphorus that becomes available and is taken up. The remaining calcium is in the form of carbonates and silicates.


Microelements

With the exception of cobalt (Co) which is more important to animals, provides essential iron (Fe), sulphur (S), magnesium (Mg), molybdenum (Mo) and zinc (Zn). 

 

Natural Origins

Over the years sedimentation from cold mineral rich fish waters along the West Coast of the Cape has formed valuable deposits which became further enriched by fossil marine and terrestrial animals who contributed threefold to that unique now shallowly covered phosphate occurrence as it is mined today. Altogether 300 different species of prehistoric animals and a number of plants have been identified so far.

 

Benefits

  • Microbial food base from natural origins
  • Slow release of phosphate
  • Rich in calcium and trace elements that stimulate root growth
  • Increase your yield, as well as improving the terpene & flavour production of your plant
  • Enriches the soil and helps with photosynthesis in all plants
  • Cost-effective. Does not leach out of the soil & reduces nitrogen loss
  • Organically certified and tested regularly
  • Controls odours caused by organic fertilisers like manure and fish emulsion extracts
  • Organic Registered No. B4038  Fertilizer Group 2 – Act 36 of 1947

 

Specifications

STANDARD ANALYSIS     5% P   % m / m
Total Phosphorus (P) 8-10
(Krumm/Wagner Method - slow release)    
Calcium (Ca) 20.1
Sulphur (S) 0.145
Magnesium (Mg) 1.30
Iron (Fe) 0.73
     
    mg / kg
Manganese (Mn) 9
Copper (Cu) 3
Zinc (Zn) 13
Molybdenum (Mo) <10
Boron (B) 0.8
Fluoride (F) 0.76

How to use

5ml = 1 teaspoon | 15ml = 1 Tablespoon | 240ml = 1 Cup

Organic amendment

Soil Mix:

  • Dosage:
    • 12ml Soft Rock Phosphate per 1L substrate
    • 360ml Soft Rock Phosphate per 30L substrate
    • You can use up to twice as much as recommended, it will not burn your plants
  • Frequency: When mixing/revitalizing a substrate
  • Application: 
    • Get a container or set a tarp on the ground
    • Add the substrate, Soft Rock Phosphate and other soil amendments
    • Mix well and water lightly
    • Cover the soil to avoid pests and keep soil from drying out
    • Let the soil sit for approx. 2 months before use

      Grow beds: 

      • Use approx. 180ml per 1m². 
      • Spread rock phosphate evenly over the entire area.
      • Mix well with soil before seeding or planting.

      Compost: 

      • Use approximately 5kg per m³ of raw material.
      • Activate with composting soil microbes: Byodyne Environoc 501.

      Fields:

      • Soft Rock Phosphate can be applied according to need of soil (P) analysis.
      • Recommendations can range from 100kg to 1500kg per hectare
      Use around 2% of the total volume of your growing medium.

        1L of Soft Rock Phosphate (approx. 1.6kg)


        Helpful tip:

        • You can speed up the release of phosphorus by combining the rock phosphate with a beneficial fungi called Mycorrhizal Fungi. The fungi help to break down and release phosphorus, making it more bio-available to the plant's roots.
        • Soft Rock Phosphate will not cause a problem if too much is applied. 
        • Dosages can vary depending on existing soil, frequency of application and environmental conditions.
        • Can be fed to your earth worm beds for a significant increase in the phosphate content of the wormcastings. 

         

        For placement of large orders contact us at: office@greenhouston.co.za