Herbicide Injury Symptomology: Amino Acid Derivative Injury

Trade Names and Uses:

  • Liberty (Glufosinate)
    -Liberty Link crops
  • Roundup Ultra (Glyphosate) / Touchdown (Glyphosate trimesium)
    -burndown or Roundup Resistant crops

Injury in Corn

smLibertyc (9925 bytes) rupdriftsmall (9211 bytes)

Mode of Action: Glyphosate and glyphosate trimesium inhibit EPSP synthase; glufosinate inhibits glutamine synthase.

Injury Symptoms: Glyphosate and glyphosate trimesium: new growth turns yellow, then brown and dies within 10 to 14 days. Glufosinate symptoms are much quicker (2-4 days).

Injury in Soybean

smRounds (7785 bytes) smAminoAcid11 (5422 bytes)

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