MarvelMango, your flowers are male.  Look at JoeP450's photo. Those are female.

3 out of 4 of my fruit producing seedlings put out the first fruit at the top of the tree. I have two seedling trees producing the first fruit this year and the fruits are about 2 - 3 feet below the tallest tip. One tree is 16 feet tall. 

I have about 1 acre of my yard planted with fruit trees.  I am a bit stingy with fertilizer and chemicals.  Last year I probably used 12 or 14 bags of fert.  My "plan" for this year is based on the recommendations of Soil Analytics. For most areas, they are recommending 150 lbs per acre of K.  Using 50% 8-2-12 and 50% 0-3-16, the average is 14%. 150 divided by .14 = 1071 lbs so my plan is more than the recommendation.  This is the best I can come up with based on my "experience" operating a fruit orchard. 

I plan on ordering some Nordox.  I do need a mister. Otherwise, I will hit that 2 lbs copper pretty quickly.  I am having trouble getting over the mental hurdle of the mister's price tag. I will get there eventually. I just spent too much money on irrigation stuff. 

So you are thinking I will need to supplement Mn with foliar or soil drenching? I have MnSO4 from amazon that I was adding to my chelated iron soil drenches, which seems to my untrained eye to be similar to tecmangan.   Maybe I should find a chelated Mn?

I bought a 20 pound bag on amazon but I do not see that anymore.  Here is the link to 3 pounds:
https://www.amazon.com/Manganese-Fertilizer-Greenway-Biotech-Inc/dp/B00G3YU1TC/ref=sr_1_1?ie=UTF8&qid=1485985081&sr=8-1&keywords=manganese+sulfate

My K number is shocking.  Har walked my yard and he told me my K was lacking.  I have been using 8-2-12-4 since.  I need something with low Mg and high K.  Seems even 1:1 ratio is not good for some plants.  Any companies do custom fertilizer mixes in small batches(500 - 750 pounds) at a reasonable price?

I used Spectrum Analytics.  They received the samples Monday and I had the results on Tuesday afternoon.

Congrats on your fruit home grown red!

I am happy to report I ate my first home grown sabara yesterday.  The tree only produced a single fruit.  I planted the tree 4 years ago from a 7 gallon.

There is a jackfruit tree at the Fruit and Spice Park that pulls apart and has a tiny core.  It is way in the back and unlabeled.  We nicknamed it "pulldown" because a little pressure on the top of the fruit left the bare core on the tree.  The excellent flavor and soft texture share some similarities with cheena so maybe it has some chempadak genetics.  The leaves are rough but not hairy. 

That looks nothing like Sleepdoc's amber, which was orange colored. I think the structure was different too, less rag.  Your taste description, while sounding very much like a fruit I would absolutely love, is not close to what we experienced here, sweet and earthly with the smallest hint of some spice like anise or licorice.   Your flavor description does sound like Sleepdoc's Berry.  Are the leaves long and pointed, sort of like a mango?  Maybe a seedling mix-up.  But I have personally planted seedlings and the fruit end up nothing like the parent.  I am starting to think people searching for seeds of a particular parentage would do just as well planting seeds of any good jackfruit they encounter since the genetics do not seem to carry forward. 

If you want to reduce the acidity, try waiting a day after the fruit is soft on the tree and see if the acidity goes down. This is a hard theory to prove but I think acidity may be reduced by leaving the fruit on the tree longer.  This seems to be the case with Bangkok Lemon.

The flower on the left looks perfect. The one on the right may be male.

Wow! Based on my lychee observations, I say yes, those are fruit.

Your tree looks great.  I think you have a good chance of flowering this year.  I have eaten fruit from smaller trees in PR. 

I bought a pair from Montoso around the same time.  I just put one in the ground around 5 months ago and the other is still in a 7 gal pot.  I almost killed them twice while in pots by under watering.  I planted the one in a windy spot and it dropped most of its leaves.  With the cooler weather, it is finally pushing some new leaves.  It is 6ft tall by 5ft wide and nearly naked.

I have a couple of 3 and 7 gallons available. They are already flowering and some have fruited.

That stinks... I have had fruit that had signs of infection in the core but the bulbs tasted fine.  I never spray my jakfruit trees but it is starting to looks like everything in the yard needs fungicide 

Everything I have read so far states jackfruit are disease and pest free but I found this:

http://www.itfnet.org/v1/2012/09/observations-on-the-occurrence-of-brown-specks-on-jackfruit-seeded-arils-%E2%80%93-a-combination-of-disease-and-abiotic-factors/

SleepDoc and I had a impromptu jak tasting today.  Five different varieties, four fresh and one refrigerated, (from left to right) Cristella, Bangkok Lemon, Cheena, and J31.  Not pictured was the refrigerated Excalibur, which was the least enjoyable (even when fresh) but still a good fruit.  The BKL was a bit early and could have used another day's ripening.  It was lemony and crunchy but was not fully flavored.  This fruit goes from lemony to sugar sweet depending on how long you let it sit.  My perfect eating stage is to pick it the day it softens on the tree and letting it ripen a day on the kitchen counter.  Others seem to enjoy it after 3 days of counter ripening.  Cristella and Cheena were both strong flavored fruits.  I enjoy strong flavorings but these are not for everyone.  Cheena has a soft texture. Cristella has a firm texture but I think the Cheena's flavor was a bit better.  J31 was right on the money.  The flavor was very good, like bazooka bubble gum but not overpowering, and the texture was firm.  I think that a large group of people would have given J31 the top prize for the day but, in the flavor department, I personally liked the cheena best.