A contact and residual urea herbicide for field crops. Available commercially in the form of wettable (dispersible) powders and in various combinations (with chlorpropham, or cyanazine or 2,4-DB and MCPA).
For etiology, clinical features, lesions and treatment see Ureas, substituted .

[toxic.gif] Toxicity
Oral doses in mg/kg or concentrations in mg/l:
LD50 rats 2850-4000
  mice 2530
  rabbits 2250
  dogs 1500
LD sheep 250
250 30 days exposure
  chickens 4000-5000
TD cattle
50 10 days exposure
50 8 days exposure
100 8 days exposure
LC50 (96 h) fish 16

The following points have been observed:
in sheep:
in chickens: