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Results of Nitrogen Trials in Adapt Network SW Michigan Project 2012 Tom Morris Professor, Soil Fertility Specialist University of Connecticut

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Presentation on theme: "Results of Nitrogen Trials in Adapt Network SW Michigan Project 2012 Tom Morris Professor, Soil Fertility Specialist University of Connecticut"— Presentation transcript:

1 Results of Nitrogen Trials in Adapt Network SW Michigan Project 2012 Tom Morris Professor, Soil Fertility Specialist University of Connecticut March 14, 2013

2 Two goals we agree on Everyone wants clean water for drinking, recreation, and fish/seafood production Everyone wants food production

3 Rainfall – 2012 Bryan, OH; Deviation Fort Wayne; Deviation March April May June July Aug Sept Total

4 Corn Stalk Nitrate Test Collect stalks anytime between 1/3 milk line and 3 weeks after black layer

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7 Corn stalk nitrate of 62 fields in SW MI in 2012 Corn Stalk Nitrate (ppm) Optimum range

8 Corn stalk nitrate values for 62 GSS fields in SW MI in 2012 – Timing of N application Percent of total fieldsin a category 3 4

9 Corn stalk nitrate values for 62 GSS fields in SW MI in 2012 – Manure applications 52 10

10 Percent of total fieldsin a category Corn stalk nitrate values for 62 GSS fields in SW MI in 2012 – Previous Crop

11 Corn stalk nitrate values for 62 GSS fields in SW MI in 2012 – Tillage Percent of total fieldsin a category 13 49

12 Corn stalk nitrate values for 62 GSS fields in SW MI in 2012 – Form of N Percent of total fieldsin a category

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15 Percent Corn stalk nitrate values for 28 Strip Trials in SW MI in 2012 Pounds N/acre

16 TRTBu/AStalk $ Need 5 bu to pay for 50 lbs of N ST12MISW124

17 TRTBu/AStalk $ Need 5 bu to pay for 50 lbs of N ST12MISW117 Trial area

18 TRTBu/AStalk $ Need 5 bu to pay for 50 lbs of N ST12MISW121 Trial area

19 TRTBu/AStalk Need 5 bu to pay for 50 lbs of N ST12MISW397

20 TRTBu/AStalk $ Need 5 bu to pay for 50 lbs of N ST12MISW120 What rate apply next year?

21 Conclusions One year of data Averages are dangerous – You need to look at the stalk values and yields from strip trials from your fields to make the best decision about nitrogen for your fields Keep field-by-field records Think in terms of being a better manager of nitrogen over the next 10 years


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