Jacob Thomas, MGeorge, K CHariharan, VKAU2019-04-032019-04-031985Agricultural Research Journal of Kerala, 23(1), 68-74.http://krishikosh.egranth.ac.in/handle/1/5810100255For field experiments with brinjal, taking the efficiency of the smallest plot as unity, RE values of various plots were computed. The efficiency was the highest for the smallest plot. There is a genera! decrease of block efficiency with increasing block size. More compact block of the same size shows higher efficiency. Blocks of identical size and shape, but consisting of long plots also show a some what higher efficiency than bloks with short plots of the same size. Arrangement of plots in more than one row decreased block efficiency and the effect is more pronounced with long plots. The number of replication required for a given level of accuracy decreased with an increase in plot size and increasing the number of replication rather than plot size was found more advantageous for a fixed experimental area.ennullArticle