RANDOM SAMPLE


A -sample drawn so that every unit in the population
subpopulati.n has an equal probability of being selected.


RATOON CROPPING

The :vlti -tion of regrowth from the stubble of a crop after
harv .t.



RECOMMENDATION

Advice (in terms of operations, times, equipment, materials and
varieties o- breeds, etc. for crop or animal production)
presented t; farmers as worthy of acceptance.



RECOMMENDATION DOMAIN

A group of roughly homogeneous farmers with similar circumstances
for whom more or less the same RECOMMENDATIONS can be made.
Recommendation domains may be defined in terms of both natural
factors (e. ;. rainfall) and economic factors (e.g., farm size).



RECONNAIS:SANCE SURVEY

A field survey method of data collection, generally of a somewhat
informal nature, that usually comes after the collection of l
SECONDARY DATA. Also known as an INFORMAL or EXPLORATORY SURVEY
or, from Spanish, SCNDEO.



RELAY INTERCROPPING, RELAY CROPPING

Growing twuo or more crops in sequence, seeding or transplanting
the succeeding one some weeks before the harvest of the preceding
crop.



REPLICATION

A treatment applied to more than one experimental unit.


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