The concept of cost efficiency was introduced by Farrell (1957) as the ratio of factor minimal cost to the actual cost. Unlike technical efficiency, the cost efficiency measure takes into consideration changes in input mix also. The Farrell cost efficiency measure was extended by Fare et.al (1984) for the case of multiple inputs and outputs. Solving one linear programming problem for one production unit, the factor minimal cost can be calculated which is called in this study as 'Farrell Cost Efficiency'. This is a very restrictive measure since it requires the knowledge of input prices and these prices are assumed to be constant.This book describes the concepts of various types of market efficiencies of decision making units (DMU's) such as price efficiency, Farrell cost efficiency, Economic efficiency, Input technical efficiency and Input Associative efficiencies. The study aims at evaluating the cost efficiencies of 77 Indian commercial Banks employing a wide variety of inputs in order to produce a spectrum of outputs.

Studies were conducted on screening and management of paddy, maize and sorghum genotypes against Rhyzopertha dominica and the results showed that there is gradual increase in per cent weight loss with increase in storage period which ranged from 0.83 to 24.67 in paddy, 1.08 to 16.22 in maize and 0.67 to 20.05 in sorghum. After 180 days of storage, the minimum per cent seed damage was found in the paddy cv. Sumati, maize hybrid Massile and in sorghum cv. M 35-1. In paddy RNR 2465, Samba Mahsuri, in maize DHM 111, DHM 117, GK 3076 and in sorghum SPV 462, CSV 15 and M 35-1 have maintained the minimum germination standards for a period of 60, 30 and 60 days respectively. In paddy, maximum population build up of R. dominica was found in Improved Samba Mahsuri and minimum in RNR 2645, in maize minimum population build up was noticed inDHM 117 and maximum in cv. GK 3076, in sorghum minimum population build up was recorded in CSH 16 while maximum in cv SPV 462 after 180 days of storage respectively. The mortality of R. dominica with various grain protectants has shown that in paddy the mortality of R. dominica is low compared to maize and sorghum.