To Control Algae and Tadpole Shrimp in Rice Fields

TO CONTROL ALGAE IN RICE (Domestic and Wild) FIELDS:  Application should be made when algae have formed on the soil surface in the flooded field. Applications are most effective when made prior to the algae’s leaving the soil surface and rising to the water surface. Depending on water depth, 1 quart to 1 gallon per acre is normally sufficient. Use the lower rate at minimum water depth and the higher rate at maximum water depth. Higher use rates are acceptable, but never use more than 1ppm metallic copper. The maximum use rate per acre should be determined by the water depth, as shown in the table below and flow. Agri-Life® can be metered into the rice field as water is being applied or slug fed into each paddy when water is being held. The maximum annual application rate must be no greater than 5.48 lbs. of metallic copper per acre-foot per for control of algae control in water-seeded rice.

TO CONTROL TADPOLE SHRIMP IN RICE (Domestic and Wild) FIELDS: Application should be made to the flooded fields any time the pest appears from planting time until the seedlings are well rooted and have emerged through the water. Depending on depth, 1-4 gallons per acre is normally
sufficient. Use the lower rate at minimum water depth and the higher rate at maximum water depth. Higher use rates are acceptable, but never use more
than 2.5 ppm metallic copper.

Maximum use rate per acre should be determined by the water depth, as shown below. The maximum annual application rate must be no greater than 13.7 lbs. of metallic copper per acre-foot per year for control of tadpole shrimp.

For simultaneous control of both tadpole shrimp and algae: The maximum annual application rate must be no greater than 13.7 lbs. of metallic copper per acre-foot per year.