See below for **Domingo (4.647 DT 2014)(4.55 Wahl 2012)**

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Actually this blog title is just an ambition at this point (September 8, 2014), but confidence is justified I think. Within a week, at least one of these two tomatoes will likely crack 4 lbs.

**1.** Big Zac (? DT 2014)(2.602 DT 2012)(5.35 Lyons 2010)

Fruit set on about July 12th from a 6X+ megabloom, though only four lobes have grown well. First blush noted on September 4th, 54 days since fruit set. For a big tomato to grow for this long (now at 57 days) during the summer months is truly exceptional. Growth has been fairly steady since day 17 at 0.11 lb./day, with an apparent surge from days 36-40 of about 0.18 lb./day.

Standard caliper measurements (widest diameters in 3 approximately perpendicular axes) put this one at 5.321 lbs. No taped CC’s yet. No way is it 5 lbs. Take a look at the lobing. Imagine placing the tomato inside an ovoid shaped container (weight prediction formula is based upon the premise that most tomatoes are roughly ovoid shaped) : so many gaps and hollow places.

I’ve assigned a GAF (Geometry Adjustment Factor) of 0.75 rather than the standard 0.95 to hopefully account for some of this. Output is **3.99 lbs**. Even that seems a bit generous, but it is a very huge looking tomato.

So this is my guess:

Big Zac (3.99 DT 2014)(2.602 DT 2012)(5.35 Lyons 2010)

Second candidate:

**2.** Domingo (? DT 2014)(4.55 Wahl 2012)

Pollinated on about 7-24-2014 from an impressive 5X+ megabloom. Growth has been remarkable, particularly after all other competing tomatoes were removed from the vine on August 9th. First blush today, 46 days since fruit set. Was hoping it would go 50+ days before ripening commenced. But it still has a good shot at 4 lbs.

Calipers put it at 4.732 lbs. Has gained 0.136 lbs./day average since day 16 with a peak between days 22-26. Taped CC’s put it at 5.117 lbs. It’s a solid, rectangular cuboid shape with modest lobing. I think these measurements will produce a closer estimate than the same measurements would for the Big Zac profiled above. Still, the best adjustment factor I have to go on is the one which applies to an earlier tomato of the same variety, namely: Domingo (2.734 DT 2014)(4.55 Wahl 2012). This combined GAF/DAF was 0.895.

Should be able to get four more days of growth out of this one, with a daily weight gain of 0.1 lb./day. So my projection for this one is:

(4.732+(0.1 X 4)) X 0.895 =** 4.493 lbs**.

Thus:

Domingo (4.493 DT 2014)(4.55 Wahl 2012)

So that’s my projection for this one, but I still can hardly believe what the formula produces!

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Update, September 9th, 2014

Here it is, the new Utah State Record (barely!):

Big Zac (3.756 DT 2014)(2.602 DT 2012)(5.35 Lyons 2010)

Weighed at D&G Scale, Inc. on a certified scale which weighs only to 0.02 lb. precision, so their scale read 3.76. My scales weigh to 0.002 lb. precision. The short-lived record was 3.754 lbs. – cannot get any closer than that!

Harvested 59 days after fruit set. Final caliper measurements put it at 5.170 lbs., taped CC’s at 3.756 – Yes, the EXACT actual weight! This is not fudged, I simply tucked the tape all the way into the crevices for the Z-axis measurement. So in this case, tape measurements are obviously more accurate.

With the Z axis measurement using calipers, I can get anywhere from 80.5 to 140.4 mm. But for consistency, the “rule” requires measuring at the widest point. If I had used the more reasonable average (110.45), the formula produces 4.064 lbs. – still 1/4 lb. overestimate, but much closer than 5.17!

Alternatively, applying a GAF of 0.70 to the caliper measurements yields 3.809 lbs., an acceptably close estimate. But assigning a GAF in advance is more an art (guesswork) than science. Thus it is.

The Domingo tomato measures to 4.836 lbs. today, so definitely on target to break 4 lbs.

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Update September 12th, 2014 -

Some well merited questions arose about whether this Big Zac (3.756 DT 2014) represents a single tomato or not. Basically, all sections/lobes must have continuous flesh with at least one other lobe. Turns out this one is a REALLY close call. Here’s the clearest of the pictures which shows flesh from the small lobe being separated from the main part. Pink flesh contrasts red skin.

A very delicious specimen!

Here’s the latest pic of the Domingo specimen:

Calipers put it at 4.897 lbs., taped CC’s at 5.311, DAF/GAF adjustment for previous large Domingo at 4.273, 1 CC formula at 4.682. Based on the look and feel of it, I would put it closer to 4 lbs. than any of these projections. But it would be very nice to have it top 4.5 lbs.! I think 5 is out of the question, however – not with all those indentations!

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Update September 16th, 2014 -

Steve Marley from New York state just weighed a Domingo specimen from the same seed stock as mine – 4.55 Wahl 2012. Using taped CC’s, his measured to 7.589 lbs., but actual weight was only 5.75 lbs. – a huge disappointment and undermines the ability of this formula to accurately predict weight. This specimen requires an unprecedented DAF/GAF of 0.758! I’ve measured hundreds of specimens and never had one which required such a huge adjustment down. One can only imagine that it is riddled with hollow seed locules and the texture from the outside is quite spongy.

Two days of zero growth with my Domingo specimen then today it put on just a bit of weight, even though it’s about 85% ripe. Fresh circumference measurements are 620 X 523 X 501 mm (24.4 X 20.6 X 19.7 in.). The 3 CC’s formula yields 5.746 lbs; 3 diameters formula projects 5.206, while single CC formula projects 4.960. This is a rather flattened specimen so 1 CC likely would be the closest of the three.

“The Real MacCoy” is the same variety from the same seed source with very similar looking geometry. So using the GAF/DAF from that specimen will probably yield my best estimate:

5.746 X 0.758 = 4.355 lbs.

At least this rather conservative estimate puts me above 4 lbs., finally!

This is a huge adjustment down, but has to be considered realistic. A new state record and > 4 lbs. are both quite likely, however, so no disappointed is merited – yet.

Will probably weigh it tomorrow, though it would be really nice if I could hang on to it for 11 more days for the Utah Giant Pumpkin Growers official weigh-off…

Latest pics:

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Update September 17th, 2014 -

**Domingo (4.647 DT 2014)(4.55 Wahl 2012)**

Before harvest:

Before official weigh-in:

On certified (by Utah Department of Agriculture and Food, Division of Weights and Measures) scales, courtesy of D&G Scale, Salt Lake City, Utah:

Documentation and Certificate:

In refrigerator, hoping it will last for 10 more days until the local weigh-off, sponsored and hosted by the Utah Giant Pumpkin Growers at Thanksgiving Point on September 27th.

A combined DAF/GAF adjustment factor of 0.809 was needed to bring this one down from ellipsoid based projection of 5.746 to actual weight of 4.647 lbs. A huge correction factor, but not the worst seen, as mentioned above. In the center of the bottom is an indentation that penetrated all the way to the stem, probably 0.3 lbs. of error just with that. It will be a while before I cut it up to check for hollow seed locules.

The bar has been raised again, this time more than one little notch! Plenty of ideas for beating this one in 2015. Nothing likely to surpass it in 2014, although another 4 pounder is a possibility…

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Update September 22nd -

Having trouble keeping this specimen in the proper temperature range. Warmest setting on the fridge is about 40° so I have to keep turning it off and on. Has endured 40-70° F.

I’m applying a 10% bleach solution to spray the rotting spots every day. Here’s the top and a close-up of the worst spot:

And the worst spot on the bottom:

It will likely be leaking in 5 days so will be for display only at the local Giant Pumpkin weigh-off event. Based on estimated weight loss from other big ones I’ve kept intact for several days after weighing, I’ve come up with about 0.45% percent weight loss per day. So after 10 days, this one is projected to weigh:

4.442 lbs.