EXTRAPOLATION AREA


The domain of suitability of a CROP or LIVESTOCK SYSTEM.
composed of the LAND TYPES to which the system is adapted.


It is


FALLOW

The period during w{ich the land is left to recover its fertility
after cropping. During this period the land may be bare or
covered by natural or planted vegetation.



FALLOW SYSTEMS


Sequences of crop years and FALLOW years. Extensive
systems are SHIFTIN~ CULTIVATION systems. Intensive
systems may be BUS!!-FALLOW systems or GRASS-FALLOW systems.


fallow
fallow


FARM SYSTEMS EXPEKIil:NTATION


Experimentation conducted either on research stations or farmers'
fields to test or further develop possible FARMING SYSTEM changes.



FARMER-MANNACED TRIA1.S

ON-FARM RESCARCH experiments conducted on a farmer's field under
the management of the farmer so as to evaluate and learn how
farmers respond to suggested improvements.



FARMER'S ENVIRONMENT

The physical, biological, economic and sociocultural conditions
under which the farmer operates.



FARMING

The .ativitt. carried out by household on holdings that represent
managerial units organized for th. production of crops and
livestock.


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