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What is the volume of 2.5 ounces of fertilizer?? (Was, Re: How much does a pound of 10-10-10 weigh????)

Janet, thanks for the nice response to my original post.  Unfortunately I
can not beg, borrow or steal an adequate scale in order to weigh out 2.5
ounces of fertilizer.  I am hoping that some trusty soul has already done
this and can tell me that 2.5 ounces (dry weight) of 10-10-10 fertilizer
equals 1/3 cup, 1/4 cup, half a soup can or whatever.  As you indicated I
need to convert from weight to volume.

Also, I now see that my original subject line makes no sense.  Like you
said  a pound of fertilizer weighs a pound.

Thanks again

Ron

At 12:56 PM 5/3/97 -0400, you wrote:
>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
>

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