#Skill:  Improve opium production [9589]
#
Usage:    USE @@@@
Time:     seven days

Use of @@@@ causes the noble to pay special attention to the
development of a poppy field.  Through appropriate fertilization
and agressive weed and pest control, the opium production of the
poppy field will be doubled in the following month, from 25 to 50
units of opium.
