The Tropical Fruit Forum

Here are some of the most  common reasons for fruit drop.

https://www.arvensis.com/en/blog-what-should-be-done-to-reduce-the-phenomenon-of-fruit-drop-in-summer/#:~:text=%E2%80%93%20lack%20of%20some%20nutrients%20such,%2C%20zinc%2C%20calcium%2C%20etc.&text=%E2%80%93%20soil%20type/texture%2C%20especially,fruit%20is%20about%20to%20ripen.

Most all plants appreciate relief from 100+ degree temperatures plus the direct rays of the hot sun.  Be a friend and give it the  loving relief it needs, an the plant will thank you. 

I don't know the insect type, but they are insect eggs.

I have a large Valentine pummelo tree about 18 years old. The flesh of a valentine fruit is very deep purplish/red, and very sweet.  It has no (zero) acid taste,

Looks  healthy enough  I sure it will grow up into a fine tree under your care.

On a tree that small I would remove all of the fruit.   If however you wish fruit just leave one.  Citrus fruit draws all of its growth energy from only the three closest leaves to the fruit.

Demo89,  please post only in English on this forum

I have always just used the hose with my thumb over the end to make a strong spray, and wash the entire tree.  For me this process has never failed me.  Some times it takes a second spray to get the few left.

How long has your trees been in the same pot?

Interesting

1rainman many people would disagree with you concerning Meyer Lemon as being a quality lemon.

I have known Hershell for a long time, ever since  the original forum that Lazz developed 10 or more years ago, way back when Hershell was a  greenhouses builder. At that time his daughter was also on the forum. Hershell you now most likely have the greatest citrus variety greenhouse in the USA for both hobby and commercial growers. I hope to see you again at Stan's next Southeastern citrus growers convention this fall. Once again thank you for all you do for the hobby and professional citrus growers.