§158.540 Plant protection data requirements.

(a) Table. Sections 158.50 and 158.100 through 158.102 describe how to use this table to determine the plant protection data requirements and the substance to be tested.

 
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                                                                                    General use patterns                                                    Test substance
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     Kind of data required      (b) Notes        Terrestrial               Aquatic              Greenhouse                                                                             reference
                                          ----------------------------------------------------------------------  Forestry   Domestic    Indoor    Data to support   Data to support      No.
                                            Food crop    Nonfood    Food crop    Nonfood   Food crop   Nonfood               outdoor                     MP                EP
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Target area phytotoxicity.....        (1)  ..........  ..........  ..........  ..........  .........  .........  .........  .........  .........  EP..............  EP..............       121-1
Nontarget area phytotoxicity..
Tier I:
    Seed germination/seedling         (2)  ..........  R           ..........  R           .........  .........  R          .........  .........  TGAI............  TGAI............       122-1
     emergence.
    Vegetative vigor..........        (2)  ..........  R           ..........  R           .........  .........  R          .........  .........  TGAI............  TGAI............       122-1
    Aquatic plant growth......        (2)  ..........  R           ..........  R           .........  .........  R          .........  .........  TGAI............  TGAI............       122-2
Tier II:
    Seed germination/seedling         (3)  ..........  CR          ..........  CR          .........  .........  CR         .........  .........  TGAI............  TGAI............       123-1
     emergence.
    Vegetative vigor..........        (3)  ..........  CR          ..........  CR          .........  .........  CR         .........  .........  TGAI............  TGAI............       123-1
    Aquatic plant growth......        (4)  ..........  CR          ..........  CR          .........  .........  CR         .........  .........  TGAI............  TGAI............       123-2
Tier III:
    Terrestrial field.........        (3)  ..........  CR          ..........  CR          .........  .........  CR         .........  .........  TEP.............  TEP.............       124-1
    Aquatic field.............        (4)  ..........  CR          ..........  CR          .........  .........  CR         .........  .........  TEP.............  TEP.............       124-2
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Key: CR=Conditionally required; TGAI=Technical grade of the active ingredient; EP=End-use product; TEP=Typical end-use product.
(b) Notes. The following notes are referenced in column two of the table contained in paragraph (a) of this section.
(1) Data are required for Special Review and certain public health situations.
(2) Data are required for pesticides to be used in forests and natural grasslands. For herbicide used in forest site preparation; the acquatic plant growth tests will be required. Data are
  required to support products to be used in other locations when any of the following conditions are met:
(i) Phytotoxicity problems concerning the product arise and open literature data are not available to address the problems.
(ii) The product may pose hazards to endangered or threatened species.
(iii) Special Review has been initiated on the product.
(3) Required if a 25 percent or greater detrimental effect was found in 1 or more plant species in the corresponding test of the previous tier.
(4) Required if a 50 percent or greater detrimental effect was found on any plant species in the corresponding test of the previous tier.

[49 FR 42881, Oct. 24, 1984. Redesignated at 53 FR 15993, May 4, 1988, and amended at 58 FR 34203, June 23, 1993]