code|description
--|Unspecified
AE|Aerial, unspecified
AG|Aerial, granular 
AS|Spray, aerial
DA|Direct application
DW|Drop wise application
EN|Environmental, unspecified
FD|Chemical incorporated into food
GG|Ground, granular
GS|Spray, ground
HS|Spray, hand
IP|Intraperitoneal
IS|In situ
MU|Multiple
NC|Not coded
NR|Not reported
PT|Painted
PU|Pump
RB|Imbedded in rubber
SP|Spray, unspecified
SS|Soil slurry
