Freebase(0.00 / 0 votes)Rate this definition: Chemical property. A chemical property is any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.
Ground Temperature. The best time to plant your corn seeds is when the soil temperature reaches an average of 50 degrees Fahrenheit. You can determine the average ground temperature in your garden using a soil thermometer -- available at most garden stores.
Corn will germinate and emerge slowly and unevenly when soil temperatures are less than 50 degrees F. Thermal time from planting to emergence is approximately 115 growing degree days (GDDs) based on air temperature or about 119 GDDs based on soil temperature using the modified growing degree formula (Nielsen, 2008).ogether with soil moisture, the temperature determines the ideal planting time for many Michigan crops. The minimum threshold temperature for corn seed germination is 50 degrees F in the seed zone.