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Hello Chris,
In the research plot pictured below the farmer was asked to avoid putting manure on three strips in this field for the past 5 years. The remainder of the field has received manure 3 times. This field was really hammered with heavy rain in early June after the entire field was side-dressed with 180 lbs per acre of nitrogen.
In the photos it is easy to see how short of nitrogen the 3 strips are today. This indicates the value of manure and the slow-release organic nitrogen made available from previous years applications.
It also speaks to the value of manure to soil health. And tissue testing as a valuable in-season and end-of-season testing tool.
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