摘要：Prioritization of agricultural
technology development¡ª
such as breeding for
new varieties¡ªshould,
among other things, be based on
expectations about the adoption
of the technology by farmers, and
on the consequential economic
and environmental benefi ts. That
is easier said than done. A major
obstacle to estimating adoption
and benefi ts is that the value of
agricultural technologies is locationspecifi
c. That is, their utility can
depend strongly on spatially variable
environmental factors, such as
soil type and climate, and social
and economic circumstances.
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