poly_id  -  this attribute is the source LCM2007 parcel ID.
gid - this is the LC Plus Crops unique id used when creating the Crops product.
parent - this attribute stores the parent's poly_id for all subdivided parcels.
crop -  this attribute contains the classified crop. The definition of the entries for this attribute is include below.

The crop codes used in the crop attribute are as follows:
ww = Winter wheat (includes winter oats)
sb = Spring barley
sw = Spring Wheat
wb = Winter barley
be = Beet (sugar beet / fodder beet)
fb = Field beans
ma = Maize
or = Oilseed rape
po = Potatoes
gr = Grass
ot = Other crops
