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Crop Protection Database
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2,4-D

Action/Use:
  • Herbicide
Use: For asparagus, cereals, corn, grasses, hay, rice, sorghum, soybeans (preplant), sugarcane, fallow land, pasture, rangeland, turf, and noncropland for control of annual mustard, Canada thistle, dandelion, lambsquarters, ragweed, etc. Many broadleaf crops (cotton, grapevines) are extremely sensitive. Aqua-Kleen* for control of aquatic weeds in lakes and ponds. Citrus Fix* in lemon packinghouses; prevents preharvest drop of mature citrus. Pyresta* controls broadleaf weeds and susceptible woody plants. Cimarron* Max for pastures, rangeland or established grasses on acres enrolled in conservation reserve programs.
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Toxicity:
  • (Rat): Oral LD50 699 mg/kg. Isopropyl: 700 mg/kg. Sodium Salt: 500-805 mg/kg. Dimethylamine salt: 949 mg/kg. Isooctyl ester: 896 mg/kg
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