Some of the oranges on my orange tree split open and drop to the ground.
Some of the Oranges on My Orange Tree Split Open Drop to the Ground
Certified GKH Gardening Expert
Citrus fruit cracking is caused by an uneven or irregular watering, such as when you have a drought and then suddenly you get an abundance of rain. This moisture causes the skin to swell and eventually crack or split open. This article for cracking oranges should help: https://www.gardeningknowhow.com/edible/fruits/oranges/oranges-splitting.htm