NC State Floriculture

 

Low Substrate Sulfur Corrective Procedures

Brian E. Whipker, James L. Gibson, Paul V. Nelson, Todd J. Cavins, and John M. Dole

Disclaimer: Growers should read and follow all label directions. Test the corrective procedure on a small number of plants prior to applying it to the entire crop.

Possible Causes
Corrective Procedures
Not using a fertilizer containing sulfur (eg. 20-10-20 or 20-20-20). 1. Use a fertilizer which contains S.
Monthly applications of magnesium sulfate not made. 1. Apply monthly epsom salts (magnesium sulfate) drenches at the rate of 1 to 2 lbs per 100 gallons of water.
Little or no sulfur provided through the irrigation water. 1. Use a fertilizer which contains S.
Don't forget to check out the Plant Root Zone Management (PRZM) Manual for more information! Want to know more? Click here!

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