Organic pesticides were mostly ineffective in Ashland parks in 2011, one year after the Parks Department stopped using chemical pesticides.
Organic pesticides were mostly ineffective in Ashland parks in 2011, one year after the Parks Department stopped using chemical pesticides.
Organic pesticides generally have to be applied during warm, dry weather. But a cold, wet spring slowed the use of the products, allowing weeds to grow and go to seed, parks staff said.
Workers also were hampered by parks rules that they post notices about planned spraying of organic pesticides 48 hours beforehand. Cool, damp weather would return, and the workers were not able to spray. Then they would have to post notices again and hope for warm, dry weather in two days.
Read more at The Mail Tribune.
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