Actives IndexAustralia

Phosphorous Acidpresent as mono-di potassium phosphite

Mineral-Phosphorus-AcidSalt or ester form

15 registered products from 13 registrants; the top 3 hold 33%.

No source approval under this name

Approved sources
0
Registered products
15
Registrants
13
Data protection ends
None current

Market structure

Who registers it

Also holds a source approvalRegisters only

  1. Duluxgroup (Australia) Pty Ltd2
  2. Australian Agricultural Chemicals Pty Ltd2
  3. Rutec Trading Pty Ltd1
  4. Bayer Crop Science Pty Ltd1
  5. Easy Liquids Pty Ltd1
  6. Liquid Fertiliser Pty Ltd1
  7. David Gray & Co. Pty Limited1
  8. Kd Plant Care Pty Ltd1
  9. 5 others5

Market timeline

Registered products, cumulative

20022005201020152020202515

Only records current in the export are counted, so earlier years are understated. 5 products first registered before 2002 are in the starting total.

Who to talk to

Register products, hold no approval13

Their products rely on a source approved for another company.

  1. Duluxgroup (Australia) Pty Ltd2 products
  2. Australian Agricultural Chemicals Pty Ltd2 products
  3. Rutec Trading Pty Ltd1 product
  4. Bayer Crop Science Pty Ltd1 product
  5. Easy Liquids Pty Ltd1 product
  6. Liquid Fertiliser Pty Ltd1 product
  7. David Gray & Co. Pty Limited1 product
  8. Kd Plant Care Pty Ltd1 product

5 more in the tables below.

Hold an approval and register products

Approval holders that also sell products under their own name.

None in the export.

Hold an approval, no products

Holders with no registered product of their own containing it.

None in the export.

0 approved sources

No current active constituent approval found in the export. It may sit under another name; search PubCRIS before concluding there is none.

13 registrants

RegistrantProductsHolds an approval
Duluxgroup (Australia) Pty Ltd2No
Australian Agricultural Chemicals Pty Ltd2No
Rutec Trading Pty Ltd1No
Bayer Crop Science Pty Ltd1No
Easy Liquids Pty Ltd1No
Liquid Fertiliser Pty Ltd1No
David Gray & Co. Pty Limited1No
Kd Plant Care Pty Ltd1No
J C & A T Searle Pty Ltd1No
Stoller Australia Pty. Limited1No
Australian Agribusiness (Holdings) Pty Ltd1No
Kenso Corporation (M) Sdn. Bhd.1No
Grochem Australia Pty Ltd1No

15 registered products

No.ProductRegistrantFormulationContentFirst registeredLabel
69853Accensi Phospot 200 Systemic FungicideAustralian Agribusiness (Holdings) Pty LtdAqueous Concentrate200 g/L2014-02-21PDF
55131Agri-Fos 400 Ph 7.2 Systemic FungicideLiquid Fertiliser Pty LtdLiquid400 g/L2002-03-15PDF
58781Aus-Phoz 600 Systemic FungicideAustralian Agricultural Chemicals Pty LtdLiquid600 g/L2005-01-11PDF
57031Aus-Phoz Systemic FungicideAustralian Agricultural Chemicals Pty LtdLiquid400 g/L2003-07-11PDF
97807Crop Doc 600 Fungicide BGrochem Australia Pty LtdSoluble Concentrate600 g/L2026-10-20PDF
56633David Grays Phos-Inject 200 FungicideDavid Gray & Co. Pty LimitedAqueous Concentrate200 g/L2003-06-16PDF
66081Kdpc Phos Phyt 400 Systemic FungicideKd Plant Care Pty LtdSoluble Concentrate400 g/L2011-04-07PDF
87962Kenso Agcare Ken-Fos 600 Systemic FungicideKenso Corporation (M) Sdn. Bhd.Soluble Concentrate600 g/L2019-06-20PDF
48147M-Dkp Foli-R-Fos 400 FungicideBayer Crop Science Pty LtdAqueous Concentrate400 g/L1995-11-08PDF
52577Nipro Throw Down Systemic FungicideEasy Liquids Pty LtdLiquid400 g/L2000-04-10PDF
42105Rutec Fungi-Fos 400 FungicideRutec Trading Pty LtdLiquid400 g/L1996-11-27PDF
66554Searles Root Rot Systemic FungicideJ C & A T Searle Pty LtdAqueous Concentrate200 g/L2011-09-08PDF
53888Sharp Shooter Rid A Rot Systemic FungicideDuluxgroup (Australia) Pty LtdLiquid200 g/L2001-10-31PDF
68325Stoller's Fungacid 600 Systemic FungicideStoller Australia Pty. LimitedLiquid600 g/L2013-01-25PDF
52749Yates Anti Rot Phosacid Systemic FungicideDuluxgroup (Australia) Pty LtdAqueous Concentrate200 g/L2000-07-10PDF

Crops and targets

Crops and situations

  1. Citrus - young or small15
  2. Grape15
  3. Avocado14
  4. Ornamental12
  5. Citrus - mature, well established10
  6. Pineapple9
  7. Citrus - mature (see label for exception5
  8. Cucurbit5
  9. Subterranean clover4
  10. Citrus - transplanted tree4

Targets

  1. Phytophthora root rot15
  2. Downy mildew9
  3. Collar rot - phytophthora citrophthora8
  4. Downy mildew on grape7
  5. Crown rot7
  6. Root rot - phytophthora clandestina4
  7. Heart rot - phytophthora cinnamomi4
  8. Phytophora crown rot4
  9. Collar rot - phytophthora spp.4
  10. Phytophthora root rot - p. nicotianae4

Number of registered products whose label covers each crop or target, not volumes. The label is what applies.

Changes in the last six months

  1. New product

    Grochem Australia Pty Ltd registered Crop Doc 600 Fungicide B with Phosphorous Acid Present As Mono-Di Potassium Phosphite

Quick answers

How many approved sources does Phosphorous Acid have in Australia?
As of the APVMA export downloaded 2026-10-23, no current active constituent approval was found under this name.
Who registers Phosphorous Acid products in Australia?
As of the APVMA export downloaded 2026-10-23, 13 companies register 15 agricultural products containing Phosphorous Acid. The most products are registered by Duluxgroup (Australia) Pty Ltd, Australian Agricultural Chemicals Pty Ltd and Rutec Trading Pty Ltd.
When does data protection end for Phosphorous Acid?
As of the APVMA export downloaded 2026-10-23, no product containing Phosphorous Acid has data protection running past 2026-10-23.
Which crops is Phosphorous Acid registered for in Australia?
Registered labels containing Phosphorous Acid most often cover Citrus - young or small, Grape, Avocado, Ornamental and Citrus - mature, well established, plus 14 more. The label is what applies.