2. YP0 = (NDVI / Days, GDD>0) YP0 = INSEY YPN = (YP0*RI)
YPMAX
RI=1.5
Grain yield
RI=2.0 A
RI-NFOA YPN=YP0 * RI
INSEY (NDVI/days from planting to sensing)
YP0 = (NDVI / Days, GDD>0) YP0 = INSEY YPN = (YP0*RI)
Nf = (YP0*RI) – YP0))/Ef

3. YP0 YPMAX B Max Yield-NFOA Nf = (YPMAX-YP0)/Ef Grain yield
INSEY (NDVI/days from planting to sensing)
Nf = (YPMAX-YP0)/Ef

4. Nf = ((YP0*RI)*(65-CV/65-CrCV)) – YP0/Ef 65? Limit of CV data
YPN
YP0
YPMAX CV
Grain yield C
RICV-NFOA CV
INSEY (NDVI/days from planting to sensing)
Nf = ((YP0*RI)*(65-CV/65-CrCV)) – YP0/Ef
65? Limit of CV data
Critical CV or CrCV, changes for different crops
Corn
Wheat

5. YPN YP0 YPMAX RI-Height-NFOA
Grain yield
RI-Height-NFOA
INSEY (NDVI/days from planting to sensing)
Nf = ((YP0*RI)*(Hmax/days from planting)) – YP0/Ef Hobs/days from planting