Sweet orange variety prone to pre harvest fruit drop is

The sweet orange variety prone to pre-harvest fruit drops is Blood red malta.
Blood Oranges are a very unique species of orange. The malta fruit themselves are red fleshed and when juiced has a hint of raspberry. It is a very beautiful ornamental orange. The tree is evergreen and can grow to soar heights of 12 - 15 feet if planted outside.
The fruit Malta is also said to boost the immune system and to be effective for treating pneumonia, blood pressure, stomach and intestinal problems and diseases related to vitamin C deficiency.