Milorganite contains virtually no chemical salts. Chemical salts, found in high concentrations in most synthetic fertilizers, can dehydrate and burn plants. This is especially true in low moisture conditions. Droughty soils add to this burn potential.
Damage from Salts
Salts can also build up in the soil to create residual concentrations. If you are watering with “gray” or effluent water, you are adding salts to your lawn. Using Milorganite, with its low salt content, doesn’t add to the salt burden of your soil. Plants can only tolerate a finite amount of soil salts.
Comparing Salt Indexes
The following table compares salt concentrations of some common fertilizers with Milorganite.
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