Quote:
Originally Posted by stevehull
Both bioavailable nitrogen and phosphorus, but WAY lots of salt (NaCL). After a while the salt builds up and there goes the plant. Just ask anyone who has a dog. Those dead yellow spots in the lawn are the result of too much salt all in one place.
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Too much nitrogen does the same thing, and I think it's the nitrogen that makes the yellow spots. My grandfather killed dandelions in the lawn by putting a teaspoon of ammonium nitrate on them. It killed the dandelion and a three inch spot of grass. Two weeks later the grass closed in and the dandelion never returned.
Granny was pissed because the old fart eliminated her source of dandelion greens.