Maize / Corn

Country
New Zealand (NZ)
Scientific Name
Zea mays
End use
Stockfeed
NPPO Details
Ministry for Primary Industries (MPI)
Relevant Web Addresses
https://www.mpi.govt.nz/
Criteria Criteria Required?
Import Permit No
Phytosanitary Certificate Yes
Additional Declaration/Endorsement Refer below
Protocol Market No
Consignments are to be free from pests, soil, weed seeds and extraneous material.

Where applicable, the exporter is to provide evidence attesting to the endorsement and present it to the Authorised Officer at the time of inspection.

The consignment must meet all requirements of IHS Part 1 and Part 2.24, including the requirement to be free of unidentified viable seeds which are:

Grain/seeds devitalised in Australia:

  • Applies to viable grain / seed for treatment to render them non-viable in Australia.
  • Zea mays grain must be rendered non-viable prior to arrival in New Zealand, using one of the treatment options listed in Appendix 2 of the IHS.
  • Following treatment, grain must be securely held to prevent contamination or re-infestation with regulated pests.
  • Additional Declaration 793 or 1304 is required.

Grain/seeds to be treated in New Zealand:

  • Applies to viable grain / seed for treatment to render them non-viable at a transitional facility.
  • For grain that is to be treated on arrival, the importer should, prior to import, ensure that the transitional facility can treat the consignment.
  • No Additional Declaration is required.

Grain/seeds for processing in New Zealand:

  • Applies to viable grain / seed for processing to render them non-viable at a transitional facility.
  • Zea mays grain must be unloaded and transported from the port of first arrival to a transitional facility in accordance with a grain import system that ensures the grain is securely transported.
  • The transitional facility must be approved by MPI for holding and/or processing grain.
  • Additional Declaration 5004 or 5005 is required.
Explanation of the endorsements

Endorsement 793:
  • Applies to non-viable grain that has been devitalised in Australia by irradiation.
  • Grains/seeds must be irradiated as per the Treatment section.
  • No Additional Statement is required.

Endorsement 1304:

  • Applies to non-viable grain that has been devitalised in Australia by heat treatment.
  • Grains/seeds must be heat treated as per the Treatment section.
Endorsement 5004:

  • Applies to viable grain / seed for processing at MPI approved transitional facilities (IHS section 2.24.3)
  • A Sampling Certificate (Additional Statement 8191 or 8192) and a Seed Analysis Certificate are required. Otherwise, the grain will be analysed upon arrival in New Zealand.
  • The Seed Analysis Certificate must be issued by an Association of Official Seed Analysts (AOSA) or ISTA accredited seed testing station or an Australian laboratory capable of undertaking the analysis.
  • Philippine downy mildew (Peronosclerospora philippinensis), Sorghum downy mildew (Peronosclerospora sorghi), Maize downy mildew (Peronosclerospora maydis), Brown stripe downy mildew (Sclerophthora rayssiae var. zeae) and Sugar cane downy mildew (Peronosclerospora sacchari) are not known to occur in Australia. No evidence is required to endorse freedom from these pests.
  • An area freedom certificate or a crop inspection report must be presented as evidence for endorsing freedom from Diplodia leaf spot (Stenocarpella macrospora). 


 Phytosanitary certificate with no endorsement or additional statement:

  • Applies to viable grain / seed for treatment to render them non-viable upon arrival in New Zealand (IHS section 2.24.2).
  • Treatment must be carried out in a MPI approved transitional facility.
If Endorsement 1304 is applied, then the consignment must be heat treated at:
  • 85 degrees Celsius for 15 hours at a minimum of 40% relative humidity. 
If Endorsement 793 is applied, then the consignment must be irradiated at a dose of 25 kGy.

The exporter is to provide evidence attesting to the treatment and present it to the Authorised Officer at the time of inspection.

Details of treatment to be endorsed on the phytosanitary certificate in the treatment section.
Option 1 (EXDOC Endorsement 793)
1) The grain/seed in this consignment has been irradiated at 25 kGy and the consignment contains no viable seeds.

Option 2 (EXDOC Endorsement 1304)
1) The grain/seed in this consignment has been heat treated and the consignment contains no viable seeds.

Option 3 (EXDOC Endorsement 5004)
1) Philippine downy mildew (Peronosclerospora philippinensis), Sorghum downy mildew (Peronosclerospora sorghi), Maize downy mildew (Peronosclerospora maydis), Brown stripe downy mildew (Sclerophthora rayssiae var. zeae) and Sugar cane downy mildew (Peronosclerospora sacchari) are not known to occur in Australia,
2) Diplodia leaf spot (Stenocarpella macrospora) is known not to occur in the area of production,
3) A representative sample has been inspected in accordance with appropriate official procedures and found to be free of any live, visually detectable regulated insects and mites.

Option 4 (EXDOC Endorsement 5005)
1) Philippine downy mildew (Peronosclerospora philippinensis), Sorghum downy mildew (Peronosclerospora sorghi), Maize downy mildew (Peronosclerospora maydis), Brown stripe downy mildew (Sclerophthora rayssiae var. zeae) and Sugar cane downy mildew (Peronosclerospora sacchari) are not known to occur in Australia,
2) The consignment was representatively sampled with a sample size of five times (5x) ISTA or AOSA guidelines/methodologies and tested in an NPPO approved diagnostic laboratory and found free from Diplodia leaf spot (Stenocarpella macrospora),
3) A representative sample has been inspected in accordance with appropriate official procedures and found to be free of any live, visually detectable regulated insects and mites.
 

Additional Statements:
Option 1 (Additional Statement 8190)
Declaration for vessel hold cleanliness (grain and seed)
1) The holds carrying the loose grain have been inspected prior to loading and found to be free of animal material, regulated mobile arthropods, regulated weed seeds, and residues of previous cargo.

Option 2 (Additional Statement 8191)
Declaration for seed sampling
1) A primary sample was officially drawn during the loading of the consignment, at a rate of at least one primary sample per 100 tonnes of grain.
2) All submitted samples were prepared and dispatched in accordance with ISTA rules.

Option 3 (Additional Statement 8192)
Declaration for seed sampling and vessel hold cleanliness (grain and seed)
1) The holds carrying the loose grain have been inspected prior to loading and found to be free of animal material, regulated mobile arthropods, regulated weed seeds, and residues of previous cargo
2) A primary sample was officially drawn during the loading of the consignment, at a rate of at least one primary sample per 100 tonnes of grain.

3) All submitted samples were prepared and dispatched in accordance with ISTA rules.

Import Health Standard dated 29 July 2022, NPPO notification dated 30 July 2025.

22/09/2025 - New additional statement 8191 created.
29/08/2022 - Updated General Requirements, Treatment and Endorsement sections based on the latest Import Health Standard.
Initial Uploaded: 29/07/2014
Reviewed Uploaded: 21/07/2026