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.
Related: When to plant corn in central Midwest. That's kind of a magic number, 50 degrees, for planting corn, observes Jim Fawcett, an Iowa State University Extension field agronomist in eastern Iowa. That's when corn will germinate, with a soil temperature of 50 degrees or higher.The reason for not planting before that is the seed actually will take up water with soil temperatures cooler than 50 degrees.The seed will swell, but it doesn't germinate.hat's kind of a magic number, 50 degrees, for planting corn, observes Jim Fawcett, an Iowa State University Extension field agronomist in eastern Iowa. That's when corn will germinate, with a soil temperature of 50 degrees or higher.