Tavvs M. Alves
Ph.D. Student
Entomology
Rhizoctonia solani
Rhizoctonia solani
Material and Methods
Material and Methods
Material and Methods
Green
505-705 nm
Red
650-690 nm
NIR
765-825 nm
Material and Methods
Material and Methods
Results and Discussion
Wavelength
Wavelength
Index
Inde
Wavelength
Index
Wavelength
Index
Ground-truthing
Ground-truthing
variable
variable
Ground-truthing
variable
Ground-truthing
variable
GREEN
GREEN RED
RED
RED NIR
NIR
NIR
NDVI
NDVI A
GREEN
RED
NIR
NDVI
GREEN
NDVI
-0.229
r=-0.229
-0.229r=r=r=
0.159
r=0.159
0.159r=r=r=
-0.774
r=-0.774
-0.774 r=r=r=
-0.602
r=-0.602
-0.602 r=r
r=r=r=
-0.229
0.159
-0.774
-0.602
Disease
Disease
rating
rating
Disease
rating
Disease
rating
nsnsns ns
nsnsns ns
p=p=
p=
0.499
0.499
p=p=
p=
0.642
0.642
p=p=
p=
0.005
0.005
p=p=
0.05*
p=0.05*
0.05* p=
p=
0.499
0.642
0.005
p=
0.499
p=
0.642
p=
0.005
** * * p=
0.05*
Wavelength
Index
Wavelength
Index
Wavelength
Index
iable
Ground-truthing variable
riable
AOKI = ρG/ρNIRNDVI
GREEN
RED
NIR
GREEN
NDVI
RED
AOKI
NIR
A
GREEN
RED
NIR
NDVI
AOKI
r=r=-0.229
r=r=r=
-0.229
-0.602
0.159
0.658
r= -0.602
r=
-0.229 r=r=0.159
0.159 r=r=-0.774
-0.774
-0.602 r=r=r=
0.658 r= -0.774
Disease
rating
ns
ns
ns
ns
p=
0.499
0.05*
0.642
p= 0.05*
p=
p=0.499
0.499 ns p=
p=0.642
0.642 ns p=
p=0.005
0.005** p=p=
p=
0.05* p=p=0.028*
p=0.028*p= 0.005 *
Results and Discussion
Results and Discussion
Conclusions
Univesity of Minnesota
Department of Entomology
Tavvs M. Alves
[email protected]