FIFRA 2(ee) Recommendation

A FIFRA 2(ee) recommendation has been issued for the use of Zelto to control Pythium blight in turfgrass, under the following directions:

Application Method:

Foliar (ground application) in a minimum of 65 gallons of water per acre or 1.5 gallons of water per 1,000 square feet

Product Use Rate:

1 gallon per acre (2.94 fluid ounces per 1,000 square feet)

Application Instructions:

For suppression of Pythium blight (Pythium spp.) in turfgrass apply Zelto preventively prior to disease symptoms on a 10-21-day interval. During periods of prolonged conditions favorable for disease development, apply on a 14-day schedule. For improved control, tank-mix Zelto with Select Phite 0-0-26 at the rate of 131-261 fluid ounces per acre (3-6 fluid ounces per 1.000 square feet).


Pythium Blight University Study

Dr. Bruce Clarke, Rutgers University

To determine the efficacy of Zelto for controlling Pythium blight, primarily Pythium aphanidermatum, on seeded perennial ryegrass (Lolium perenne).

FIFRA Section 2(ee) Bulletin