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

 A postal scale will accurately measure 2.5 ounces

At 07:27 PM 5/3/97 -0400, you wrote:
>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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