NAC554.213. Drench treatment.

     1. The Director will approve a drench treatment:

     (a) For nursery stock that is enclosed in a container or, except as otherwise provided in this section, is potted;

     (b) If the active ingredient of the pesticide solution used in the drench treatment is:

          (1) Imidacloprid at a concentration of 0.5 grams of active ingredient per 1 gallon of water and the solution is applied immediately preceding June 1 or the date of the flight season of the adult Japanese beetle established by the phytosanitary official of the state in which the plant originated; or

          (2) Bifenthrin at a concentration of 20 ounces of active ingredient per 100 gallons of water and the solution is applied in a ratio of approximately 8 ounces of pesticide solution for every 6 inches or portion thereof of the diameter of the container or pot;

     (c) If the potting medium is sterile and free from soil; and

     (d) If the container or pot is clean.

     2. A plant treated by a drench treatment must be retreated if:

     (a) During the flight season of the adult Japanese beetle, the plant is not shipped into this State within 16 weeks after the initial treatment; or

     (b) The plant is exposed to a second flight season of the adult Japanese beetle.

     3. A plant potted in the field may not be treated with a drench treatment.

     4. Pesticide solutions that may be used in a drench treatment include, without limitation:

     (a) For imidacloprid, Marathon 60 WP.

     (b) For bifenthrin, 9 Talstar Nursery Flowable 7.9%.

     (Added to NAC by St. Quarantine Officer by R080-99, eff. 10-26-99)