Energy Intensity and Productivity in Relation to Agriculture-Bangladesh Perspective

Abstract

Results of the energy intensity and overall energetic efficiency show that total energy output
increased from 69.87 to 82.08 GJha^-1, with increasing commercial energy input from 17.94 to 27.10
GJha^-1 during 1990 to 2005. The corresponding increase in energy intensity was 45.67 to 54.47
MJ/US$(2000). Energetic efficiency, calculated as the ratio of total output to input for different
crops, using weight factor, decreased from 3.97 to 3.03. The energetic efficiency declines with
increasing energy input, and the result indicates that input energy increases faster compared to
energy output. The mechanization index increased from 64 to 78%. However, the main goal being
maximization of the output per unit agricultural land, the estimated change in efficiency with
increasing input can play an important role in choosing the appropriate input for optimum output.

Key words: Energy intensity; Productivity; Agriculture

DOI: 10.3329/jbas.v34i1.5492

Journal of Bangladesh Academy of Sciences, Vol.34, No.1, 59-70, 2010