Monitor Soil Temperatures fror Seed Germination
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Do you get confused each spring as the weather begins to warm, about
when to plant your crops? Soil temperature, not air temperature, controls
seed germination. If you plant too early, when the soil temperature is
too low, the seeds will not germinate. If you wait longer than required,
you will lose part of the growing season and possible yields.
Different types of seeds germinate at different temperatures. The minimal
and optimum soil temperature for germination can usually be found on the
seed packet or by calling your local extension agent. Plants can be divided
into cool season and warm season cultivars. You can begin to plant cool
season crops when the soil temperature averages 40°F and warm season
crops when the average is 50°F or more. Keep in mind that planting
a seed at the minimum soil temperature will delay germination as compared
to planting at the optimum soil temperature.
Probe thermometers are the easiest way to measure soil temperature. The
best time to take the temperature is at mid-day in an area that is not
in direct sunlight. For cool season crops, the soil temperature should
be measured at approximately two inches. For warm season crops, the soil
temperature should be measured at approximately four inches.
As you can see, testing your soil temperature is very important. It is
also quick and easy. GEMPLER'S carries a variety of dial-probe and digital
probe thermometers that will quickly read your soil temperature. Models
are available that read in Celsius or Fahrenheit.
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Click here to see GEMPLER'S selection of probe thermometers. |
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