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Just check with your roots first by digging up some with a plain-Jane, old-fashioned shovel. If adverse weather or another malady has salvaged your root system, you're wasting your money.
"You have to make sure there is a root system to take in the nutrients," says Andrew Ferrel, an Indiana-based commercial agronomist for Mycogen Seeds. "Seemingly alive plants can have no roots. If the roots are damaged, a nitrogen application will do no good."
Tell us why!
