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Re: How much does a pound of 10-10-10 weigh????

Hi, Ron.  A pound of 10-10-10 weighs a pound!  You knew that, of course.
But what are looking for for is a volumetric equivalent of a pound, which
you'll divide by whatever to get the right amount for your 16-square-foot
beds.  Then you can measure your fertilizer without using a scale--much
handier in the garden setting.

All fertilizers do not weigh the same by volume.  The following math applies
*only* to your 10:10:10, not other fertilizers with different
nitrogen-phosphorus-potassium (NPK) numbers.  The only reason we can do this
equation is because the bag label specified that 1 lb (or 16 ounces) of the
product was the right amount to put on 100 square feet of soil.

I think you can calculate your needs by means of a ratio, using weights (not
volumes).  Once you have the correct weight of fertilizer needed for each
16-square-foot bed, you can measure that weight of fertilizer once using a
postal scale and kitchen measuring cups and ever afterward apply to the beds
using the cup measures instead of weights.

The ratio would be (always sticking with 10:10:10)

16 (ounces)                x
_________      =   _______

100 sq ft                16 sq. ft.

Solving that fraction gives, 100 X = 256 (ounces) or

X =  2.5 oz. of 10:10:10 per bed

Now, get a scale and weigh out 2.5 oz of your 10:10:10.  Pour it into a
measuring cup and you're in business.

Naturally, the same ratio would work for other fertilizer intensities or bed
sizes, providing you plug in adjusted numbers.  But there's no substitute
for doing the math and then measuring out the product accordingly.
Overfertilization with synthetic fertilizers has burned the rootlets of many
a plant.  Remember, they're not like animals:  they can't run away from that
burning stimulus.

--Janet


------------------------------------------------------------------
Janet Wintermute             jwintermute@ids2.idsonline.com

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