2016-07-21_REVISION - M1980002 (2)

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competition with leafy spurge. These two procedures allow effective pasture use by other livestock, such as cattle, that normally do not graze leafy spurge, 3. Chemical control: In the fall, spray the infestation with Tordon 22K (picloram), Plateau (imazapic), or Perspective (aminocyclopyrachlor - chlorsulfurun) to control leafy spurge. This example integrates biological, cultural and chemical controls into a weed management system. If leafy spurge is the weed problem, you may have to repeat this program most growing seasons. With this procedure, you can still use that land and see a return on your weed management investment Systematic Control Procedures Do not attempt to control all weed infestations in a single season, except on small land parcels. The mapping procedure will indicate where dense infestations lie and where small scattered or perimeter infestations are located. Be systematic about weed management. Start with perimeter infestations. These are the easiest and most affordable to control. If controlled first, they can be kept from becoming large and dense. If you start with large, dense infestations, perimeter ones often get worse. This leads to frustration and a sense of futility in weed management. A good weed -management plan Integrates two or more control measures into a management system. Be systematic about weed management. Keep good records of weed management. A systematic approach allows for a return on the control investment during the weed management process. Ground that was lightly infested can be used for productive purposes, then some of that profit used to combat heavier infestatif3n.,. Record Keeping and Evaluation Keep good records of weed management. Include procedures used, dates applied, weather conditions, and growth stage and condition of weeds and desirable plants. Evaluate for success or failure. Good records and evaluation lead to successful management and fewer failures. Often, evaluation efforts provide the most accurate assessment one to three years after control application. This is important for perennial weeds where follow-up is a key to successful weed management. The worst mistake to make is to use a weed management system, assume it will work, and not evaluate the outcome. Colorado State University U.S. Department of Agriculture and Colorado counties cooperating. CSU Extension programs are available to all without discrimination. No endorsement of products mentioned is -intended nor is criticism implied of products not mentioned.