EPTC (Eptam 7E)
Dahlia and daylily
Rate 5 lb ai/A
Time Apply preplant and incorporate immediately 2 to 3 inches deep for annual weeds and 6 inches deep to suppress growth of certain perennial weeds.
Remarks Rotate fields to reduce degradation by microorganisms that increase with continual use of EPTC.
Site of action Group 8: lipid synthesis inhibitor but not an ACCase inhibitor
Chemical family Thiocarbamate
trifluralin (Treflan EC, Treflan 10G)
Established gladiolus and dahlia; 10G on bulbous iris, tulip, and narcissus
Rate Apply 0.5 to 1 lb ai/A of 4 lb/gal formulation depending on soil type. Incorporate 2 to 3 inches deep with power-driven rotary equipment; be careful not to disturb the crop. Apply 4 lb ai/A of 5% granular formulation to newly planted gladiolus; activate immediately with overhead irrigation.
Remarks Gladiolus corms smaller than 1 inch diameter may be injured.
Site of action Group 3: microtubule assembly inhibitor
Chemical family Dinitroaniline