Match List I with respective critical stage of irrigation of crops (List II):

List I	List II
A. Wheat	I. Panicle initiation
B. Groundnut	II. Silking
C. Rice	III. Pegging
D. Maize	IV. Crown root initiation

Choose the correct answer from the options given below:

Correct option is D

· A. Wheat: Critical irrigation stage is at Crown root initiation (IV).
· B. Groundnut: Critical irrigation stage is at Pegging (III).
· C. Rice: Critical irrigation stage is at Panicle initiation (I).
· D. Maize: Critical irrigation stage is at Silking (II).
· Critical stages of irrigation are the growth stages most sensitive to water stress, and proper irrigation at these stages is essential for maximum yield.
Correct Match: A-IV, B-III, C-I, D-II
Thus, the correct answer is (d).