Young trees are particularly sensitive to over-fertilizing, but respond well to fish emulsion.

Relying on average numbers when planning the use of manures can result in under- or over-fertilizing soils.

Over-fertilizing these plants may promote weak, spindly growth and invasion by weeds.

Over-watering & over-fertilizing cause faster growth and more mowing.

He's also in a pilot project using the GeenSeeker, a computerized sensor that scans plants' leaves to determine how much nitrogen they need, to avoid over-fertilizing.

In the long term, however, they must suffer the consequences of over-fertilizing, deforestation, over-consumption of water, reduction of ecological diversity and the loss of local species.

It is easier to correct under-fertilizing a plant than it is to correct over-fertilizing; usually by the time you notice that you have over-fertilized, it is too late to save the plant.