A balanced nutrition with macro and micronutrients will help to improve citrus yield through increasing fruit weight. It is important to make sure that nutrients are not limited during early and mid fruit development.
Crop Nutrition and Citrus Weight
According to trials potassium has a positive influence on fruit weight by improving fruit fill.
Boron, iron, manganese and zinc
Boron, iron, manganese and zinc will all help improve leaf and tree performance leading to improved fruit weight.