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Application of the correct amount of fertilizer and pesticide to a lawn is important! Too much fertilizer may burn the grass. Too little herbicide gives ineffective weed control.
There are many brands of lawn spreaders. Each spreader has its own method for setting the rate of application. To confuse matters even more, a spreader setting that accurately dispenses the correct fertilizer rate at one setting might not dispense the same amount of pesticide or seed at that setting.