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Last Updated: 8/21/2026

D-638

Active Ingredient: 2,4-D

2x2.5 gal; 30 gal; 265 totes; bulk

D-638 is a special formulation containing 2,4-D acid. It is more effective than 2,4-D amines for controlling hard-to-kill weeds such as field bindweed, Russian knapweed, Canada thistle, leafy spurge, cattails, tules and nutgrass.

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    • Ideal solution for reduced-tillage programs and provides control of more than 60 annual, biennial and perennial weeds.
    • Excellent choice for post-harvest cleanup and can increase weed control in cool temperatures as compared to conventional 2,4-D ester formulations.
    • Mixes well with liquid fertilizer and other nitrogen solutions.
    • Formulated to ensure compatibility with fertilizers or with other EPA-registered pesticides.

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