Symptoms of Boron Deficiency in Grapes

Boron is essential for growth and development of new cells for new growth in plants. Seed development, cell wall formation, nodule formation, flowering, and developing fruit all depend on adequate Boron. Organic matter is the most important soil source of Boron. Hot or cold dry weather can often slow decomposition at the soil surface, which reduces the release of Boron to crops. Coarse-textured soils are typically low in minerals that contain Boron and are susceptible to Boron leaching.