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Minnesota Crop News > 2001-2008 Archives

October 25, 2001  

Nutrient Removal by Major Minnesota Crops

Dr. George Rehm, Extension Soil Scientist
At this time of year, there are several requests for information about the amount of nutrients removed by crops. The values that are popular are summarized in the following table. These values are useful because they are listed on a per bushel and per ton basis. Therefore, if the yield is known, nutrient removal can be easily calculated.

Crop removal of essential nutrients for major crops in Minnesota.

    Removal
Crop   N P2O5 K2O S Ca Mg
    lb/bu
Barley grain 1.0 0.4 0.35 0.08 0.04 0.07
stover 0.4 0.15 1.10 0.10 0.20 0.08
total 1.4 0.18 1.45 0.18 0.24 0.15
Corn grain 1.0 0.35 0.25 0.07 0.02 0.06
stover 0.5 0.25 1.05 0.09 0.18 0.14
total 1.5 0.60 1.25 0.16 0.21 0.20
Soybeans grain 4.2 0.90 1.5 0.20 0.20 0.23
stover 1.3 0.30 0.9 0.25 1.5 0.22
total 5.5 1.2 2.4 0.45 1.70 0.45
Wheat grain 1.6 0.6 0.4 0.1 0.05 0.14
stover 0.5 0.12 1.2 0.13 0.21 0.1
total 2.1 0.72 1.6 0.23 0.26 0.24
    lb/ton
Alfalfa   53 12.0 50.0 5.0 -- 5.0


 
 
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