Re: Estimating Pumpkin Weights From Measurements
- To: "'Pumpkin'" <pumpkins@mallorn.com>
- Subject: Re: Estimating Pumpkin Weights From Measurements
- From: "* G* L* <G*@PSS.Boeing.com>
- Date: Wed, 8 Jul 1998 08:58:32 -0700
Bob-
thanks for the estimating formulas.
i was wondering how these came to be?
did you just take the measurements and weights of lots of pumpkins and
plot them and do some kind of curve fit to it?
to me - it seems like a curve fit would be more like polynomial equation
like -
Ax^3 + Bx^2 + Cx + D
if so were most of the pumpkins large ones? say over a certain weight-
200lbs? 300lbs? 400lbs? 500lbs?
has anyone kept all of these measurements ? I would like to see them.
also does anyone have information on pumpkin thinkness ? I would love to
see weight and thinkness in a side by side comparison.
then the next question is: pumpkin density- are they all the same? in
other words if you take a 1 inch cube out of middle of everyones
pumpkins and weighed them would they all weight the same ? or would some
of the "heavy hitters" weight more - thus have a higher density.
my guess is that pumpkin density is nearly the same in all AG's. but
that thickness would vary in pumpkins close to the same weight. ???
It would be nice to work with crossing and develop an extra thick
pumpkin with a high density and still large growth. ... but i guess
this is what Howard Dill did to come up with AGs.
sorry if this is getting to technical, i'm just curious - the engineer
side of me is showing through. from my point of view genereally the more
technical we get the more we understand what is going on and then we
might have a better chance of controling it. even though it might not
be to fun.
it seems to me there is an abnormally high percentage of technical type
people who like to grow pumpkins ???
Gordon Tanner
Maple Valley WA
>Equation for the new hot off the press chart of pumpkin wt vs
circumference that I >provided to Langavin for his book.
>
>Not near as accurate as over the top but good for quick day to day
gain.
>
># lbs = 0.001517 times (circumference) to the power of 2.61374
>
>ie a 39" pumpkin would be 21.8 lbs
> a 146" pumpkin would be 688.7 lbs
>
>For you guys & gals out there who need my more accurate over the top
equation
>it is as follows.
>
># lbs. = 0.0000795 times (sum of the three over the top measurements)
to the power >of 2.76
>
>ie a 96" pumpkin (over the top) would be 23.5 lbs
> a 350" pumpkin would be 835.6 lbs.
>
>A chart for this is also in Don Langivin's Book #2
>
>Remember these only give estimates and every pumpkin will weigh
different on the >scales. However I believe that Zehr's 1061 lb pumpkin
in 1996 was within 2.8 lbs >(0.26%) of that predicted by the over the
top equation (that was created in 1993). The >new Feb 1998 circumference
equation would have predicted that Zehr's Pumpkin would >have weighed
1122 lbs or would be off by 61 lbs or 6%. You see why I say that the
over >the top measurements are more accorate.
>
>Wish you all the best this year
>
>Bob.
>
---------------------------------------------------------------------
To sign-off this list, send email to majordomo@mallorn.com with the
message text UNSUBSCRIBE PUMPKINS
