DOWNSTREAM RESEARCH


That part of FARMIt- SYSTEMS RESEARCH concerned with assessing the
FARM SYSTEM role of information gained from UPSTREAM RESEARCH. It
may be carried out on farmers' field' or on research stations as
field, la:boatory or desk studies.



DRY FARMINGi

Cultiv.ati-n of crops (usually cereal?) in ROTATION with one or two
years of F;-LLOW and without irrigation in arid and semi-arid
zones.



DRYLAND

Land that. except for limited periods, does not hold moisture in
the rooting zone in excess of that held at field capacity.



ECONOMIC ENVIRONMENTAL FACTORS

Factors oF -an economic nature (such -s the availability of credit,
prices of farm products, cost of hired labour, cost of seed,
agricultural. chemicals and farm equipment, and land ownership and
tenure ch-aracteristics) which contribute to the ENVIRONMENT within
which a FARMING SYSTEM operates.



ECONOMIC FEASIBILITY

This is said to prevail if an activity or investment has expected
benefits in excess of costs when the time value of money is
considered.



ENVIRONMENT

The setting within which a SYSTEM operates and from which it is
delimited z,: the boundary of the system. Relative to a farm or
FARMING SVSTEM, the environment is constituted by the physical,
biological, economic and sociocultural setting within which the
farm or far,'ing system operates.


PAGE 7