. 2015 Mar 27;10(3):e0121462. doi: 10.1371/journal.pone.0121462

Table 3. Parameter estimates of models, relating disease index of wheat powdery mildew to the area of the red edge peak (Σdr _{680-760 nm}) at three growth stages (GS) at the two plant densities in 2009–2010 and 2010–2011 seasons. ^a .

Season	Density ^b	10.5.3 ^c		10.5.4		11.1
Season	Density ^b	a	b	a	b	a	b
2009–2010	1	−451.31±73.89	158.62±24.13	−563.69±86.08	230.46±24.96	−317.30±41.93	163.67±12.02
	2		163.27±27.07		221.90±23.13		163.11±10.63
2010–2011	1	−890.69±115.86	262.94±32.96		213.34±21.30		162.55±9.23
	2		286.54±38.36		204.78±19.46		161.98±7.83

^aThe disease index (DI) of wheat powdery mildew was a function of Σdr _{680-760 nm}, therefore DI = a×Σdr _{680-760 nm} + b.

^bPlant density 1 and 2 represent 60 and 120 kg seed ha^-1, respectively.

^cGrowth stage using Feekes scale.

Table 3. Parameter estimates of models, relating disease index of wheat powdery mildew to the area of the red edge peak (Σdr 680-760 nm) at three growth stages (GS) at the two plant densities in 2009–2010 and 2010–2011 seasons. a .