Northeast Region Certified Crop Adviser (NRCCA) Study Resources

Search:

In This Section

• PO 10 Weed life cycles
• PO 11 Weed survival mechanisms
• PO 12 Common weed identification
• PO 13 Dichotomous key
• PO 14 Timing of control
• PO 15 Mechanical weed control
• PO 16 Cultural weed control
• PO 17 Biological weed control
• PO 18 Chemical weed control
• PO 19 Herbicide site of action
• PO 20 Environmental affects herbicides performance
• PO 21 Problems associated with herbicide use

Competency Area 2: Weed Management

PO 14. Recognize how weed life cycles and growth habit impact choice and timing of control

Weed control measures (methods) limit weed infestations so that crops can be grown profitably or other operations can be conducted efficiently. Control efforts should exploit biological differences between crops and weeds and should increase competitiveness of crops in comparison with weeds. A successful control program should involve two or more methods of control since relying on only one often results in failure. See also details under PO. 20, especially for postemergence applications.