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FW: Estimate Table
- To: "'p*@athenet.net'" <p*@athenet.net>
- Subject: FW: Estimate Table
- From: "* D* G* <D*@PSS.Boeing.com>
- Date: Thu, 11 Sep 1997 05:56:36 -0700
Duncan McAlpine
> ----------
> From: nevus@ideasign.com[SMTP:nevus@ideasign.com]
> Sent: Wednesday, September 10, 1997 9:50 PM
> To: McAlpine, Duncan G
> Subject: Re: Estimate Table
>
> McAlpine, Duncan G wrote:
> >
> > per the mailing list archives using the word weight
> > http://www.mallorn.com/lists/pumpkins/search.cgi
> > It is easy...try it.
> >
> > ESTIMATING WEIGHT OF GIANT PUMPKINS
> >
> > The best way to estimate (accent on the word estimate) the
> weight
> > of giant
> > pumpkins is the over-the-top method and using the table
> presented
> > by Len
> > Stellpflug of Rush, NY. Competitive growers, including the
> > Ottawa-St.
> > Lawrence Growers, pretty much all use it. When comparing
> pumpkins
> > rather
> > than say the estimated weight, we often give the over-the-top
> > measurements
> > ie "Tim's pumpkin measures 306 inches" instead of "weighs an
> > estimated 576
> > lbs."
> >
> > Dan Gardner now has a copy of this table and the notes that go
> with
> > it and
> > he is going to Email it out to all of us in the immediate
> future.
> > We do
> > not have the computer support equipment to put it out from this
> > end.
> >
> > You should measure at least the circumference of your chosen
> fruit
> > every
> > day, hopefully at the same time. It should show increased
> value
> > every day.
> > Do the 3-way over-the-top measurements irregularly. If the
> > measurements
> > don't increase, you have a problem - your pumpkin has stopped
> > growing.
> >
> > For Bill and Cecilie in Owen Sound - there really is no average
> > specific
> > gravity for a giant pumpkin. You can never be sure of the
> > thickness of the
> > walls and the size of the cavity.
> >
> > All the best!
> >
> > Gus
> >
> > Scanned text of information submitted via fax by Gus Saunders on
> > 8/13/96....
> >
> > OTTAWA-ST.LAWRENCE GROWERS
> > c/o FARMER GUS's
> > 7930 Bleeks Rd., RR 2, Ashton, Ontario KOA 1 BO
> > Telephone (613) 838-5435
> > FAX (613) 838-2088
> > ESTIMATING WEIGHT OF GIANT PUMPKINS AND SQUASH
> > by Leonard Stellpflug
> >
> > Since the tables for estimating weight of GIANT Pumpkins and
> Squash
> > were
> > published in 1991, I collected measurements for most of the
> largest
> > fruit.
> >
> > The best estimates are with the OVER-THE-TOP method. This
> requires
> > adding
> > Circumference to the ground-to-ground over-the-top measurements
> in
> > both
> > directions. Enter Table 1 with the total INCHES to obtain the
> > estimated
> > weight in POUNDS. Bob Marcellus used his computer and obtained
> the
> > following formula which fits the data as good as any curve I
> could
> > draw
> > thni the data:
> >
> > 2.76
> > Weight (pounds) = 0.0000795 x (inches)
> >
> > Table 2 gives estimates using only the Circumference (C)
> > measurement. This
> > method does not give good estimates for unusually high, low,
> long
> > or short
> > fruit. I find it useful to determine weight increases from
> > day-to-day as I
> > only do over-top measurements every 2 to 3 weeks.
> >
> > My previous theoretical formula begins to over-estimate in the
> 650
> > to 700
> > pound range. I could not adequately adjust the formula. Table 2
> is
> > from my
> > best-fit formula of the historical data and is:
> >
> > 2.85
> > Weight (pounds) = 0.000445C + 15
> >
> > The Circumference measurement is the largest circumference
> taken
> > parallel
> > to the ground at approximately the stem-blossom level. The
> Over-Top
> > measurements are from ground4o-ground in both directions over
> the
> > highest
> > point of the fruit. The measurement must be taken straight down
> > from the
> > edges of the fruit. DO NOT follow the contour of the fruit to
> the
> > ground.
> >
> > To illustrate the reliability of the estimates I used
> measurements
> > for the
> > 20 largest truft I have data for from 92, 93 and 94 (772 to 990
> > pounds).
> > Both methods had 1 0 over and 1 0 under estimates. The
> estimates
> > deviated
> > from actual weight as follows:
> >
> > Accuracy Range Table 1 Table 2
> > (+-) (over the top) (Circumference)
> > 0 to 5% 55% 20%
> > 5 to 10% 40% 35%
> > 10 to 15% 5% 20%
> >
> > The largest deviation was 13.9% with Table 1 and 29.3% with
> Table
> > 2.
> >
> > >From fruit-to-fruit the major variable is average wall
> thickness.
> > I
> > challenge someone to invent a simple device (similar to a Stud
> > finder,
> > hardness tester, etc.) for estimating pumpkin wall thickness.
> Then
> > we could
> > develop a set of curves for various wall thicknesses.
> >
> > I encourage each weighoff site to assign'someone to measure as
> many
> > truft
> > as time permits. Send me the data and I will issue revised
> tables
> > when
> > sary. Leonard B. Stellpflug, 1925 Middle Road, Rush, NY, 14543
> >
> > This chart was not updated after the 1995 Weighoff but will be
> in
> > December '96.
> >
> > PUMPKIN WEIGHT ESTIMATES
> >
> > Leonard Stellpflug (December, 1994)
> > TABLE 1: OVER-THE-TOP SUR LE DESSUS
> > INCHES LBS POUNCE LBS
> > 142 69 | 194 164 | 246 316 | 298 536 | 350 836
> > 144 72 | 196 169 | 248 323 | 300 546 | 352 849
> > 146 75 | 198 173 | 250 330 | 302 556 | 354 862
> > 148 78 | 200 178 | 252 337 | 304 566 | 356 875
> > 150 81 | 202 183 | 254 345 | 306 576 | 358 889
> > 152 84 | 204 188 | 256 352 | 308 587 | 360 903
> > 154 87 | 206 193 | 258 360 | 310 598 | 362 917
> > 156 90 | 208 198 | 260 368 | 312 608 | 364 931
> > 158 93 | 210 204 | 262 376 | 314 619 | 366 945
> > 160 96 | 212 209 | 264 384 | 316 630 | 368 960
> > 162 99 | 214 215 | 266 392 | 318 641 | 370 974
> > 164 102 | 216 220 | 268 400 | 320 652 | 372 989
> > 166 106 | 218 226 | 270 408 | 322 664 | 374 1003
> > 168 110 | 220 232 | 272 417 | 324 675 | 376 1018
> > 170 114 | 222 238 | 274 425 | 326 687 | 378 1033
> > 172 118 | 224 244 | 276 434 | 328 698 | 380 1048
> > 174 121 | 226 250 | 278 442 | 330 710 | 382 1063
> > 176 125 | 228 256 | 280 451 | 332 722 | 384 1079
> > 178 129 | 230 262 | 282 460 | 334 734 | 386 1095
> > 180 133 | 232 269 | 284 469 | 336 746 | 388 1111
> > 182 137 | 234 275 | 286 479 | 338 759 | 390 1127
> > 184 141 | 236 282 | 288 488 | 340 771 | 392 1143
> > 186 146 | 238 288 | 290 497 | 342 784 | 394 1159
> > 188 150 | 240 295 | 292 507 | 344 797 | 396 1175
> > 190 155 | 242 302 | 294 516 | 346 810 | 398 1191
> > 192 159 | 244 309 | 296 526 | 348 823 | 400 1208
> >
> > TABLE 2: CIRCUMFERENCE CIRCONFERENCE
> > INCHES LBS POUNCE LBS
> > 61 70 | 85 155 | 109 300 | 133 518 | 157 821
> > 62 72 | 86 160 | 110 307 | 134 529 | 158 836
> > 63 74 | 87 165 | 111 315 | 135 540 | 159 851
> > 64 77 | 88 170 | 112 323 | 136 551 | 160 866
> > 65 80 | 89 175 | 113 331 | 137 562 | 161 881
> > 66 83 | 90 180 | 114 339 | 138 573 | 162 897
> > 67 86 | 91 185 | 115 347 | 139 585 | 163 913
> > 68 89 | 92 190 | 116 355 | 140 597 | 164 929
> > 69 92 | 93 196 | 117 363 | 141 609 | 165 945
> > 70 95 | 94 202 | 118 372 | 142 621 | 166 961
> > 71 98 | 95 208 | 119 381 | 143 633 | 167 977
> > 72 101 | 96 214 | 120 390 | 144 645 | 168 993
> > 73 105 | 97 220 | 121 399 | 145 658 | 169 1010
> > 74 109 | 98 226 | 122 408 | 146 671 | 170 1027
> > 75 113 | 99 232 | 123 417 | 147 684 | 171 1044
> > 76 117 | 100 238 | 124 426 | 148 697 | 172 1061
> > 77 121 | 101 244 | 125 436 | 149 710 | 173 1078
> > 78 125 | 102 251 | 126 446 | 150 723 | 174 1096
> > 79 129 | 103 258 | 127 456 | 151 737 | 175 1114
> > 80 133 | 104 265 | 128 466 | 152 751 | 176 1132
> > 81 137 | 105 272 | 129 476 | 153 765 | 177 1150
> > 82 141 | 106 279 | 130 486 | 154 779 | 178 1168
> > 83 145 | 107 286 | 131 496 | 155 793 | 179 1187
> > 84 150 | 108 293 | 132 507 | 156 807 | 180 1206
> >
> > Duncan McAlpine
>
> ------
>
> The circumference-only formula is incorrect as listed above and will
> not
> result in the values listed on the table. To get the values on the
> table the following formula must be used:
>
> Weight (pounds) = 0.000445*(C^2.85)+15
>
> Regards,
> Chris Wilbers
> Sioux Falls, SD
>
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