Example Report

Spring Planting Soil Temperature Chart


Spring Planting Soil Temperature Chart

Soil Temperature Chart (available on-line only)
Soil temperature, not air temperature, controls germination of seeds. Soil temperature needs to be above 50°F for corn to germinate and 60°F for soybeans to germinate. Optimum temperatures for germination are higher.

Click [ here ] to view a table of 2-inch soil temperatures from other Missouri locations.

Please let us know if you have any trouble viewing this chart by sending a message to HorizonPoint@missouri.edu. All comments regarding this chart or the use of graphics in your report are welcome and desired.


The information above will be included in your daily report.

During the spring, a chart of soil temperature at the 2 inch depth is available. During the fall a chart of soil temperature at the 6 inch depth is available. This soil temperature is estimated for your latitude from the soil temperature probes at the MU Agricultural Weather Stations.

The soil temperature chart consists of a blue line of mean soil temperature and a red line of this year's soil temperature. The blue mean line is for as many years of data as are available for the agricultural weather station being used. The name of the station being used is in the graph heading. In order to give an indication of the trend in soil temperatures, the graph is for 2 weeks prior to the date of the report to 2 weeks into the future. The graph also indicates the critical decision points by using horizontal gray bars to indicate frozen soil and minimum planting temperatures.
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