Boron deficiency on citrus made worse by
- Sandy soils
- Alkaline soils
- Soils low in organic matter
- High levels of nitrogen
- High levels of calcium
- Cold wet weather
- Periods of drought
Boron is important for
- More uniform and vigorous vegetative growth
- Leaves are properly formed and premature drop is avoided
- Fruit set and development is improved
- Fruit quality (juice/sugar levels) enhanced
- Fruit/rind ratio improved
- Yield increased