index row size exceeds btree maximum

This appears related to my previous post:
http://archives.postgresql.org/pgsql-general/2005-09/msg00809.php

I setup a unique index using the title, yield, and
directions fields. Some inserts are causing this
error:

DBD::Pg::st execute failed: ERROR:  index row size
2832 exceeds btree maximum, 2713
CONTEXT:  SQL statement "insert into stuff (title,
yield, directions) values ( $1 ,  $2 ,  $3 )"

What do I do?

Thanks,
CSN



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