Nutritional/Physiological Disorders:Boron Deficiency

  • deficiency 1
  • deficiency 1
  • deficiency 1


  • 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).