seriousness of weed infestation will influence the decision to use herbicides or 

 not. 



Whenever possible, allow the weed canopy or companion-crop canopy to develop 

 so It will mask spray from the forage species. 



The herbicides 2,4-D, 2,4,5-T, 2-(2,4,5-TP), and MCPA are not poisonous to 

 livestock at the rates of application nornnally used to control weeds In forage crops, 

 pastures, and rangelands. If no poisonous weeds or woody plants or weeds containing 

 poisonous constituents are present In the treated area, livestock need not be removed 

 while or after the applications are made. 



If poisonous weeds or poisonous woody plants are known to occur In pastures or on 

 rangelands, remove the livestock from the area while spraying and for at least 30 

 days after treatment. Several herbicides. Including 2,4-D, 2,4,5-T, and MCPA, are 

 known to produce marked changes in the chemical composition of treated plants. 

 There is also some evidence that some herbicides affect the palatablllty of certain 

 plants and that livestock will eat certain species after they are treated that they 

 normally would not eat. 



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