CRD

RCBD

a) Here treatments are assigned to experimental units at random.

a) Here experimental units are divided into blocks and all the treatments appear at least once in each block.

b) Results are rather accurate.

b) Results are precise.

c) Done by listing the treatment levels and assigning a random number to each.

c) No restrictions on the number of treatments.

d) Experimental unit may be homogenous or heterogenous.

d) Experimental units must be homogenous.