Nutritional/Physiological Disorders:Boron Deficiency
- Boron deficiency occurs more in humid areas.
- In deficient plants, the veins are very close, raised above the lamina and leaves become brittle initially.
- In later stages, chlorotic spots parallel to midrib and corrugation and laddering symptoms also appear and unfolding of leaf is delayed in addition to the yield reduction.
- Leaves curl and become deformed. Flag leaf is also deformed (Image1,2).
- Interveinal chlorosis and striation at right angles to main veins.
- Leaf tip exhibits browning and breaks.
- Severe deficiency causes all growth to stop.
- Distal part of the inflorescence comes out and the basal part gets stuck up at the throat (Image3).