Necrosis mainly occurs by the deficiency of (a) Ca, Mg (b) N, S (c) Mn, Mo (d) Fe, Mn
Option A.Nacrosis is browning or blackening of tissue due to the death of a cell or group of cells, while still a part of the plant is living. It occurs due to the deficiency of calcium `(Ca^(2+))` magnesium `(Mg^(2+))`, copper (Cu) and potassium (K)
