RE: Question on PPM (Parts Per Million)

Robert,

The way to do this is the best way for you. But don't always trust what you
hear. Basically your effort to get ppm is one I faced a few years ago. Soil
weighs approx 120 pounds per cubic foot. There are 43560 square feet in an
acre. The depth of nutrient dispersement and dilution now comes into play.
If you have hard soil (clay) 4.5" below the surface and you only till the
top 4.5" then you have about 2 million pounds of soil per acre to deal with.
In my case I decided that I had to deal with the top 9" of soil since that
is what the tiller I had at the time would work up and my under soil is
quite hard. In my case I work with about 4 million pounds of soil per acre
and apply accordingly.

Haven't blown a pumpkin up since.

Best Regards,

Bob.
Growin em or blowin em in Spencerville.



-----Original Message-----
From: owner-pumpkins@hort.net [o*@hort.net]On Behalf
Of Bob Attaway
Sent: Tuesday, 10 February 2004 6:05 PM
To: Mallorn
Subject: Question on PPM (Parts Per Million)


At our recent South Eastern Growers meeting I was told that  an acre is
considered to be 2 million pounds of soil.

I am working on determining PPM, but the Soil test by my local
University states everything in pounds of amendment per acre.
If what I understand is true, I would just divide pounds of amendment per
acre
by 2 to obtain PPM.

Is this true?

I am  terrible at math.

Thanks in advance:
Bob Attaway

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