IF
growth ?x stunted
THEN
deficiency ?x nitrogen
#####
IF
color ?x pale-yellow
THEN
deficiency ?x nitrogen
#####
IF
leaf-edges ?x reddish-brown
THEN
deficiency ?x nitrogen
#####
IF
root-growth ?x stunted
THEN
deficiency ?x phosphorus
#####
IF
stalk ?x spindly
THEN
deficiency ?x phosphorus
#####
IF
color ?x purplish
THEN
deficiency ?x phosphorus
#####
IF
maturing ?x delayed
THEN
deficiency ?x phosphorus
#####
IF
leaf-edges ?x scorched
THEN
deficiency ?x potassium
#####
IF
stems ?x weakened
THEN
deficiency ?x potassium
#####
IF
seeds ?x shriveled
THEN
deficiency ?x potassium
#####
IF
fruits ?x shriveled
THEN
deficiency ?x potassium
#####
WM
root-growth my-plant stunted
color my-plant purplish
#####
CONJECTURES
deficiency my-plant potassium
deficiency my-plant phosphorus