Chilling Time for Cattle

Cattle in the Great Plains never know what to wear. Just when they put on their winter coat, it turns warm. Just when they settle into a warm day, temperatures drop and north winds chill a cow to the bone.

Photo: aranchmom.com

Rapid temperature change tips the scale for cattle on the verge of getting sick. It’s that added stress that can bring on bovine respiratory disease. The Cattle Comfort Index gives us a tool to monitor and measure rapid weather changes. It’s a measure of just how good or bad outdoor conditions are for cattle. Continue reading

Relative Humidity and Dewpoint

Tuesday, October 2, 2017 provided an excellent example of why meteorologists turn to dewpoint temperature to get a better picture of moisture in the air. Relative humidity is a good index to monitor drying potential, disease potential, or fire risk, but relative humidity is relative to the air temperature. When the air temperature changes, the relative humidity changes. Dewpoint temperature is an absolute measure of water vapor, independent of air temperature.

Wheat dew on heads(2)

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Inversion, Dispersion and Spraying

You’ve got a busy day ahead! If part of the day’s work is spraying, it’s tempting to kick on the sprayer as the morning sun lights up your crop and soil. If you’re spraying a herbicide, you don’t want to spray when an inversion is present.

Morning mist is a visible indicator of an inversion, but don’t assume an inversion is gone. The mist maybe gone, but  inversion may still be in place. Read on for a sure way to know when an inversion has fully dissipated.

morning-mist-wallpaper-c2017-08-08.AgBlog.Inversion Dispersion.Morning Mist Soybean Continue reading