Boron deficiency 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
- Improves flowering
- Improves fruit set
- Gives more even ripening
- Increases alcohol level in berries
- Increases sugar level in berries
Yara recommended fertilizers for Boron
YaraVita BORTRAC
Grapevines: Foliar application: 1-1.5 l/ha at flower truss visible, at flower buds separated and at fruit set. Also, 1-2 l/ha after harvest before leaf senescence. Water rate: 500-1000 l/ha. Soil application: 3-5 l/ha. Water rate: 50 l/ha minimum.
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Grapevines: 1-1.5 kg/ha at flower truss visible, at flower buds separated and at first fruit set. Also, 1-2 kg/ha after harvest before leaf senescence. Water rate: 200-1000 l/ha.
Read more about YARA SOLUBLE BORON