ABSTRACT
Concept: Agrosphere could be explained as a man-made ecosphere on earth, developed through constant mending of soils, crops and related factors since 8 to 10 thousand years (Krishna, 2002). TTte agrosphere confines to terrestrial zones on earth where agricultural activity flourishes. In other words, agrosphere is that terrestrial portion carved out of naturally evolved biosphere, where agricultural activity such as crop production is possible. Biologically, agrosphere deals with crops, and their ecosystematic interactions with other flora, fauna and abiotic factors. Geographically, agrosphere constitutes the cropping zones that occur between the equator (0° latitude) to sub-Arctic/Antarctic circle until 63 to 65° N or S. It practi cally intrudes into any part of the globe that is congenial, and supports cropping systems. The basic ingredients that allow the development of agrosphere in these latitudes are fertile soils, well adopted crop genetic stocks, water and suitable environmental parameters. On a broader
horizon, agrosphere may be defined as a man-made conglomerate of agroecosystems that occurs world-wide and is integrated through constant interaction with other ecospheres namely lithosphere (soils), hydrosphere, atmosphere and biosphere.
