Thanks guys,
Kaz, you will have a lot of fun with a digital refractometer. You grow lots of different fruits and can get Brix readings from them. Ever since I got my refractometers, I have been able to hone in my fertilizer regimen to significantly increase the Brix.
The decrease in watering increases the Brix about the same amount as fertilizing appropriately. Each can affect the Brix by approximately 2%.
If someone were not watering appropriately and not fertilizing appropriately, they could potentially bring the Brix of their fruit from 16 to 20%.
The amount of sun is also very important and my tree is in full sun.
I’ve been told at the Avocado tasting and by family and friends that my loquats were very sweet. I attribute that to fertilizing with 0-10-10(organic ultrabloom) and/or chemical 3-12-12 ( Gro power) throughout the season. I also add gypsum and or langbeinite to increase Brix.
I generally water heavily in the beginning to size up the fruit and then cut water back to 50% during the final 3 weeks approximately.
Because the fruit develops in different stages depending on when the flowers were pollinated, the first fruits are very large but more watered down. The later fruit gets less water during development so they are smaller and much sweeter.
Simon