Symptoms occur first on the youngest parts. Youngest leaves turn chlorotic and their tips turn brown later on. Curd does not develop as a compact unit turns purplish – brown appears as it is wilting and leaves may curl downward. Trunk is hollow and when the top is cut off a brownish-colored cavity is found. In B deficient cabbage, cavity is extended into the head. The youngest leaves are chlorotic, leaf edges are scorched and blades turn downward develop poorly.

Soil application of borax @ 20 kg/ha or Foliar spray of borax 0.5% twice at fortnightly interval.