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Which fertilizer should you use?
You should have your soil tested every 3-4 years
to determine what nutrients may be needed. You can purchase a
soil test kit, or take a sample to a local nursery. Some counties
have agencies that can also test soil for a nominal fee.
The result of your soil test will be a factor
in your choice of fertilizer. Generally, the proper ratio of primary
nutrients (nitrogen, phosphorous and Potassium.) is influenced
by the season. The selection of secondary nutrients is influenced
by the condition of your soil.
You have three choices when it comes to form
of fertilizer; organic, liquid or timed release. Organic fertilizer
is your classic food or animal waste that has been composted.
The benefit of organics is that you really can't damage your lawn
by over-fertilizing. You may also have a ready supply of composted
material. The down side is that it won't contain the balance that
your lawn needs, it is heavy, requires large quantities and is
relatively difficult to apply. Liquid fertilizer can be convenient
to apply because it is sprayed, usually with an attachment to
your hose. However, it doesn't last as long and so it must be
applied much more often. Slow release fertilizer comes in granules
which are spread with a hand spreader or larger push spreader.
Also, don't underestimate the value of leaving
the lawn clippings when you mow. These clippings break down quickly
and return vital nutrients to the soil. The rumors you have heard
about lawn clippings leading to thatch are untrue. The USDA has
tested and determined that thatch does not result from lawn clippings
being left on the lawn. The key is that you don't wait until the
lawn is too tall and that you mow only when the grass is dry.
Otherwise, you will end up with clumps of clippings that turn
brown and are unsightly as well as may block sunlight from the
grass underneath.
Because of all the factors that influence the
selection of fertilizer, you should take advantage of the knowledge
of the staff at your local nursery or home center. First of all,
they are generally going to stock the appropriate fertilizer for
the current season and the unique considerations for your region.
Furthermore, their staff can help you to identify your variety
of grass (bring a sample with you), answer your questions and
help you select the appropriate fertilizer for your needs.
How Much Fertilizer should you use?
Over fertilizing can lead to chemical burn, excessive
top growth and weakens your lawn. Under fertilizing results in
a lawn that lacks color & lushness, increases risk of disease
and results in more weed growth. Clearly, getting the right balance
is important.
This is also where the local nursery staff is
invaluable. The type of grass will affect the quantity of nutrients
needed. Ask the staff to help you select the right product for
your type of grass (remember, bring a sample of your grass). If
you know your variety of grass, you can also just read the packages
as they will include detail of how much of their product to use
for your variety of grass.
Always follow all of the directions for the use,
application and cautions listed on the package. Use of protective
clothing, gloves, eyewear and breathing masks is recommended when
working with chemical fertilizers.
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