George Silva

Senior Educator

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Office: 517-543-2310
Fax: 517-543-8119
551 Courthouse Drive Suite One
Charlotte, MI 48813



Fact Sheets:
N-P-K FERTILIZERS – Cost calculations and Best-Buy Options
Use of Controlled Release Nitrogen Fertilizers on Corn and Wheat
In-Season Diagnostic Tests for self-learning and monitoring Nitrogen on Corn
Some Nutrient Management on No-till Corn versus Conventional Tillage


  • Fall fertilizer practices

    October 10, 2011 | Fall is a good time to apply phosphorus, potassium and lime as recommended by a soil test. In Michigan, potassium may provide a higher return to investment compared to phosphorus fertilizer.

  • Fall Conservation Tour highlights Clean Sweep and environmental stewardship

    September 28, 2011 | The Fall Conservation Tour provided excellent networking opportunities amongst farmers, state officials and private industry. Over 9,000 pounds of unwanted pesticides were collected for disposal in the Clean Sweep program.

  • Using a chlorophyll meter for nitrogen management on corn

    August 30, 2011 | The chlorophyll meter is a non-destructive diagnostic tool that can be used to improve nitrogen management on corn. The test relies on adequately fertilized N reference plots for its proper calibration.

  • End of season corn stalk nitrate test

    August 24, 2011 | The end of season cornstalk nitrate test is one of the few diagnostic tools that can determine if excess nitrogen was applied to corn. Even though the test is done late in the season, it is valuable for fine-tuning and long-term adjustment of N management.

  • Fall conservation tour set for September 8, 2011

    August 2, 2011 | Clean Sweep, MAEAP and fertilizer stewardship practices will highlight the 2011 Fall Conservation Tour. Land owners, conservationists and farmers are invited to attend.

  • Soil nitrate-N variability on corn fields with high mineralization potential

    July 18, 2011 | A summary of the 2011 soil nitrate test results shows that despite conditions favoring high N losses, the PSNT was a useful nitrogen management tool on fields with previous manure practices.

  • Landowners and farmers invited to a conservation practices workshop on June 28

    June 24, 2011 | The theme “Conservation Practices” will be highlighted in a workshop on June 28 at the Stockbridge Township Hall in Ingham County.

  • Initial PSNT results demonstrate nitrogen credit for corn

    June 15, 2011 | Despite challenging environmental conditions after planting that favored nitrate losses from leaching and denitrification, the PSNT detected substantial amounts of nitrate N in fields with high N mineralization potential.

  • Prep work for PSNT

    May 9, 2011 | Some prep work necessary to achieve the desired results from the Pre-sidedress Soil Nitrate Test (PSNT) for corn are highlighted.

  • Slow release nitrogen fertilizers

    May 5, 2011 | MSU field trials indicate that ESN is just as effective and has many benefits compared to anhydrous ammonia, urea and UAN.

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