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City of OKC says: Lighten up on the lawn fertilizer

by Richard Mize Published: April 22, 2013

Yes!

–rm

Residents asked to lighten up on fertilizer

 

With summer upon us, many Oklahoma City residents are turning to fertilizer to grow lush, green lawns.  Unfortunately this stimulant can impair the health of the City’s lakes and streams when it’s allowed to wash down neighborhood storm drains.

 

“Local studies indicate that many homeowners unknowingly over apply fertilizer on their lawns,” Environmental Protection Manager Raymond Melton said.  “This can lead to polluted waterways.”

According to an EPA study released recently, more than half of the rivers and streams in the U.S. are in poor biological health. The most widespread problem was high levels of phosphorus and nitrogen washing into rivers and streams from farms, cities, and sewers. High levels of phosphorus — a common ingredient in fertilizers — were found in 40 percent of rivers and streams.

 

Here are some other helpful tips when fertilizing:

  • Have your soil tested. Use the results to identify your lawn’s needs to maximize productivity and identify deficiencies.  Adjusting your soil pH and fertilizer application will result in a healthier lawn.
  • Apply fertilizer during dry weather and wet the ground using controlled watering.
  • Fertilize on a day with little or no wind to reduce drift, sweep any excess fertilizer out of the street and back into your grass.
  • Bag or mulch excess yard trimmings from sidewalks and driveways to reduce fertilizer and pesticides attached to the clippings from blowing into the storm drains or washing away during the next rain.
  • Avoid overwatering. Overwatering can increase the nitrogen loss by 5 to 11 times compared to slow delivery rates.
  • Consider mulching to reduce the need to fertilize. Grass blades decompose quickly and can contain about 4 percent nitrogen, 1 percent phosphorus and 2 percent potassium.
  • Store unused fertilizer in a dry area not exposed to rainfall or runoff.
  • Consider alternative grass such as buffalo grass.
  • Never throw grass clipping into curblines, storm drains, channels or creeks.  Improperly disposed plant materials can cause serious water quality problems and may clog storm drainages.
  • Recycle your leftover fertilizer and pesticides at the Household Hazardous Waste Facility at 1621 S. Portland.
by Richard Mize
Real Estate Editor
Real estate editor Richard Mize has edited The Oklahoman's weekly residential real estate section and covered housing, commercial real estate, construction, development, finance and related business since 1999. From 1989 to 1999, he worked...
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