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Adair Co. Extension Agent News: Colorado Beetle

Colorado Potato Bug in Adair County Gardens

By Nick Roy, Adair Co. Home Extension Agent

Several home gardeners have been calling seeking information on a pesky little insect on their tomato and potato plants this past week. The common black and yellow-striped "potato bug", a very familiar insect to home gardeners, is the most serious insect pest of potatoes. At this time most gardeners are seeing the Colorado potato beetle in the red larva stage feeding on leaves. Their damage can greatly reduce yield and even kill plants.



The Colorado potato beetle is notorious for its ability to rapidly develop resistance to insecticides that are used repeatedly for control. This has been a serious problem on the east coast for some time, and is becoming more of a problem in Kentucky. With a limited number of insecticides available, some homeowners feel they have exhausted their control options when it becomes resistant to one or more insecticides.

Insecticides should only be used when needed. Potato plants can withstand considerable defoliation without yield loss. Plants can loss up to 30% of their foliage without yield loss. Generally, insecticides do not need to be applied unless there is more than an average of one beetle or larva per plant. Additionally, some beneficial insects such as birds, predatory stink bugs, and parasitic flies will help to reduce Colorado potato beetle numbers somewhat.

Other non-chemical control measures such as hand picking of adult beetles and immature stages is encouraged as this will aid to delay the development of resistance. Hand picking can be particularly effective in reducing the numbers of overwintering beetles coming to the young plants in the spring. Resistance by Colorado potato beetles should be managed on a field to field basis. While they may be resistant to one insecticide in a particular location, those in other areas within the same community may not have developed resistance to that insecticide.

Improving Your Management Skills

Effective farm managers use their skills to successfully maneuver through an agricultural industry that is constantly transforming and evolving.

Top managers understand that there are uncontrollable factors associated with farming, but they use their skills to eliminate or limit the impact of these challenges. Below are 10 traits that top agricultural managers possess that can be adapted to any farming operation.
  1. Know production costs
  2. Set goals based on a clearly defined mission
  3. Effectively communicate, lead and empower others
  4. Keep excellent records and can easily access and assess them
  5. Are innovative and easily adapt to change
  6. Dissatisfied with the status quo
  7. Organized, focused and able to prioritize
  8. View the future aggressively
  9. Willing to assess and take risks
  10. Take time to recharge
Reviewing these traits can help you determine what traits you have and where you may need to place more focus. While becoming a better manager may take some additional effort, it will make your farming operation more efficient and profitable.

For more information on how you can improve your management practices and farming operations, contact the Adair County Cooperative Extension Service. Educational programs of the Cooperative Extension Service serve all people regardless of race, color, sex, religion, disability or national origin.


This story was posted on 2008-06-24 09:14:18
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