Page 4
To Measure % Diseased Leaf Area
Pic
k c
olo
ur
Se
co
nd
ary
1
2
3
4
5
6
7
T
h
e
n
c
lic
k
h
e
re
C
lic
k
h
e
re
C
lic
k
a
n
d
d
ra
g
t
o
d
e
fi
n
e
o
p
ti
o
n
a
l
a
re
a
o
f
in
te
re
s
t
8
D
e
fi
n
e
h
e
a
lt
h
y
le
a
f
D
e
fi
n
e
d
is
e
a
s
e
d
le
a
f
A
re
a
m
o
d
e
S
p
e
c
if
y
%
a
re
a
M
e
a
s
u
re
Zo
om
S
a
v
e
r
e
s
u
lt
s
t
o
f
ile
Dr
ag
Ca
lib
ra
te
Ar
ea
o
f in
te
re
st
Im
ag
e
Pr
im
ary
Te
rtia
ry
A
q
u
ir
e
i
m
a
g
e
C
lic
k
h
e
re
T
h
e
n
c
lic
k
h
e
re
T
o
M
e
a
s
u
re
%
D
is
e
a
s
e
d
L
e
a
f
A
re
a
u
s
in
g
a
V
id
e
o
C
a
m
e
ra
R
e
s
u
lt
s
W
in
d
o
w
Im
a
g
e
W
in
d
o
w
C
o
n
tr
o
l
W
in
d
o
w
U
n
d
o