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spring. Once the thistles start to develop stems they are hard to kill.
Kates directed, “Spray , only when the winds are less than five miles an hour. Keep spray pressures between 20-30 pounds per square inch. Use proper s'zed nozzles. Spray when the temperatures are 60 degrees fahrenheit or higher during the day.”
For complete details on thistle control, visit your county or city Extension office for a copy of Virginia Tech Extension Control Series 110. □
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