According to the calendar, it's supposed to be Spring.
Unfortunately, the weather here in central Indiana
does not want to cooperate since the forecast
for this weekend is 6 to 10 inches of snow.
This too shall end and warmer weather will be right around the corner
With that in mind, I'm sharing with you
an article from Hobby Farms about using
natural fertilizers and not chemicals.
These 10 fertilizers come from natural sources and can help improve
the fertility of your soil and the nutrition of your crops. Before you
add a fertilizer—natural or otherwise—to your garden bed, it's advised
that you have your soil tested for nutrient levels and
pH.
It's especially important to know the pH level before adding
phosphorous fertilizers because phosphorous is only available at a
fairly limited pH range. Adding more phosphorous to an area with the
wrong pH will tie up the nutrient in the soil and not make it available
to the plants. Not too mention, excessive nutrients can add to run-off
problems and create pollution issues.
If you're an
organic farmer,
be sure the fertilizer brands you use are on the Organic Materials
Review Institute's approved materials list. However, for home gardeners
or small-scale farmers who aren't certified organic but want to use only
natural fertilizers, all of the following fertilizers are considered
organic, even if the particular brand you use isn't on the list.
1. Fish emulsion and hydrolyzed liquid fishProcessing
fish or fish byproducts with heat or acid treatments creates fish
emulsion. Fish emulsion is generally a pretty stinky fertilizer, but
it's a good source of all three macronutrients—nitrogen, phosphorus and
potassium—with an N-P-K (nitrogen-phosphorus-potassium) ratio of 5-2-2.
Hydrolyzed liquid fish fertilizers are created using enzymes rather
than heat. The resulting product is not smelly and retains more trace
nutrients and vitamins. The average N-P-K ratio for hydrolyzed fish
fertilizers is 4-2-2.
2. Bone mealA byproduct of
slaughtering facilities, bone meal is created through the steam
processing and pulverization of animal bones. Bone meal is an excellent
high-phosphorus fertilizer with an average N-P-K ratio of 3-15-0. The
phosphorous in bone meal takes a few months to become available to
plants via microbial processes in the soil. It also contains calcium,
another essential plant nutrient. Phosphorous is most available in soil
with pH between 6.0 and 7.0, so be sure to test and adjust soil pH if
necessary.
3. CompostBoth commercially produced compost and
homemade compost
benefit soil by adding organic matter, providing food for beneficial
microbial life, increasing the soil's water-holding capacity and
gradually releasing plant nutrients. Composts made with high amounts of
manure or biosolids (sewage sludge) may be high in salts and can burn
plants, but composts made with primarily plant residues do not generally
contain troublesome amounts of salt. A typical N-P-K ratio for compost
is 2-1-1, though its exact nutritional content depends on many factors.
Compost that smells like ammonia or is not yet fully decomposed should
be allowed to finish breaking down to avoid damaging plants. Compost
also contains many micronutrients essential for plant growth.
4. ManureThe nutrient content of
manure is dependent on many factors, including its age, source and the
presence of bedding materials. Because of potential pathogen exposure,
raw manure should be avoided. Manure should be a minimum of 180 days old
or fully composted before it's added to growing areas. In addition to
containing macronutrients, manure is also a great source of several
trace nutrients essential for plant growth.
Most
cattle and
horse
manures have an average N-P-K ratio of 1-0.5-0.5 while poultry manures
tend to be better high-nitrogen fertilizers (3-1-1 on average). The
nutrients in manure are not immediately available to plants and can take
up to several years to be released by soil microbes. In general, about
half of the total nitrogen is available the first year, with the rest
being released slowly over several subsequent seasons. Manure is also an
excellent source of organic matter but can contain weed seeds.
5. Rock phosphateA mineral rock
powder, rock phosphate is an excellent source of phosphorous, with an
N-P-K ratio of 0-2-0. The phosphorous contained in rock phosphate
becomes more available the second year after application, and
phosphorous is most available within the soil when the pH ranges between
6.0 and 7.0. Be sure to test soil pH before adding rock phosphate. It
is also a good source of calcium.
6. Cottonseed mealCottonseed meal
is a high-nitrogen fertilizer with an average N-P-K ratio of 6-0.4-1.5.
It takes several months to be processed by soil microbes and broken
down so that it can release the nutrients it contains. Organic farmers
should seek out organic cottonseed meal because cotton is often a
genetically modified crop and many pesticides are used during its
growth.
7. Alfalfa mealWith an average
N-P-K ratio of 2-1-2, alfalfa meal provides plants not only with these
macronutrients but also many trace nutrients. It takes one to four
months to be broken down by the soil microbes and for the nutrients to
become available.
8. Blood mealA byproduct of
slaughtering facilities, blood meal is a very high-nitrogen fertilizer
with an N-P-K ratio of 12-0-0. Because of its high ammonia content,
inappropriate use or over-fertilizing could cause burned foliage.
9. Feather mealAlthough it takes
four months or longer to break down and release its nutrients, feather
meal is a great high-nitrogen fertilizer with an N-P-K ratio between
7-0-0 and 12-0-0. It is a byproduct of poultry processing.
10. Liquid kelpAlthough the
amounts of nitrogen, phosphorous and potassium contained in liquid kelp
are minimal, it is high in essential trace nutrients as well as plant
growth hormones that accelerate plant growth and improve flowering.
Liquid kelp is created through the cold processing of this ocean plant.
It is mixed with water and applied to plants both as a soil drench and a
foliar spray. The nutrients it contains are available immediately for
plant use.
About the Author: Jessica Walliser,
horticulturist and co-host of KDKA radio's "The Organic Gardeners" in
Pittsburgh, is the author of several gardening books, including Grow Organic
(St. Lynn's Press, 2007) and Good Bug Bad Bug
(St. Lynn's Press, 2008). Visit her blog “Dirt on Gardening” to follow her gardening adventures and learn gardening tips and tricks.