Boron is the most widely deficient minor nutrient in vegetable crop
soils. It is needed for protein synthesis and increases flower set,
crop yield and quality. In combination with adequate phosphorus,
boron
increases pollination, fruit set and seed development.
Boron deficiency causes growth reduction at the growing tips. Plants
have small, crinkled, deformed leaves with large areas of
discoloration. Boron deficiency is often caused by application of too
much lime. While boron is essential for root growth and fruit
development, it can become toxic if over-applied. Always test the soil
and apply only the recommended amount.
The deformed fruit of these strawberries is due to a deficiency of
boron, which also deforms the plants leaves and roots.
Bushy, drooping, crinkled leaves indicate boron deficiency in potato
plants.