Helpful tips and tricks with Agricultural Irrigation

How Irrigation Can Protect Your Crops from Frost

WP Law - Monday, February 13, 2017
frosty crop

Everyone who has worked with plants knows that the winter months present an incredible danger for the health of crops due to frost injury. In fact, frost injury could potentially wipe out an entire crop if not protected properly. Many people have heard about using irrigation to protect crops from frost injury but don't understand why or how this works. Read below to learn more about how irrigation can protect crops from frost injury.

The Water Protects the Plants from Injury

While most people think that the layer of ice provides the protection with irrigation systems, it is actually the process of the water turning into ice that protects the plant from injury. As the sprinklers apply water to the plants and it begins to freeze, heat is released.  The scientific term for this is called the latent heat of fusion.  In other words, for water to turn into ice it must give up (or lose) heat. It is the heat that is lost during the freezing process that keeps the plants from being damaged.

The Water Freezing Keeps Temperatures above a Critical Point

In order for this process to protect the plants, water must be continually changing from a liquid state into a solid state.  Therefor frost protection sprinklers must be continually operated while air temperatures remain below freezing.  Frost protection sprinklers must not be turned off until the air temperature is well above freezing and the ice that has formed on the plants begins to melt.

People looking at using an irrigation system to protect their crops from frost injury should contact W.P. Law for information. Make sure those crops receive the protection that they deserve.


Trackback Link
Post has no trackbacks.

Find A Location Near You!


303 Riverchase Way
Lexington, SC 29072

Phone 803-461 -0599
Toll-Free 800-476-4515
Fax 803-461 -0598
Contact Us


8:00am - 5:00pm


Summer Hours:

Effective March 13, 2021
thru August 28, 2021

8:00 am - 12:00 pm
Counter Service Only


Need Directions?


3636 Belvedere Rd.
John's Island, SC 29455

Phone 843-559-3945
Fax 843-559-2740
Contact Us


8:00 am - 5:00 pm


Need Directions?


1330 Grove Rd.
Greenville, SC 29605

Phone 864-295-3810
Fax 864-295-6990
Contact Us


8:00am - 5:00pm


Need Directions?


2400 Highway 101 S.
Greer, SC 29651

Phone 864-879-1045
Fax 864-879-1 046
Contact Us


7:30am - 5:00pm


Need Directions?