Table 4: Levels of significance for the ANOVA of agronomic traits for six seedbed environments [Fargo (undrained), Fargo (drained), Prosper, Barnesville, Hitterdal, and Rothsay] in 2012.

SOV† df df‡ SC EV LV IDC§ CC PH TKW GY
Environment (E) 5 4 - - - - - - - -
Rep (E) 17 14 - - - - - - - -
S[seedbed] 1 1 ns ns ns ns ns ns ns ns
S x E 5 4 ns * * *** * * ns ns
Error (a) 17 14 - - - - - - - -
C [cultivar] 9 9 *** *** ns ** ** ** *** ns
C x E 45 36 ns ** ** *** *** *** *** **
S x C 9 9 ns ns ns ns ns ns ** ns
S x C x E 45 36 ns ns ns ns ns ns ns ns
Error (b) 306 252 - - - - - - - -
SOV† df PC OC LP 1S 2S 3S 4S TS TP SP
Environment (E) 5 - - - - - - - - - -
Rep (E) 17 - - - - - - - - - -
S [seedbed] 1 ns ns ns ns ns ns ns ns ns ns
S x E 5 * ns * ns ns ns ns ns ns ns
Error (a) 17 - - - - - - - - - -
C [cultivar] 9 *** *** *** *** *** * *** *** *** *
C x E 45 ** ** ns ns ns ns ns ns ns ***
S x C 9 ns ns ns ns ns ns ns ns ns ns
S x C x E 45 ns ns ns ns ns ns ns ns ns ns
Error (b) 306 - - - - - - - - - -

ns, *, **, *** = not significant, significant at (p≤0.05), (p≤0.01), and (p≤0.001), respectively.
†SOV = source of variation, df =degrees of freedom, SC = stand count, EV = early vigor (28 June to 29 June), LV = late vigor (20 Aug. to 21 Aug.), IDC = iron deficiency chlorosis score, CC = canopy closure (at R6), PH = plant height, TKW = thousand kernel weight, GY = grain yield, PC = protein content, OC = oil content, LP = lowest pod height, 1S to 4S = number of pods per plant with one to four seeds, TS = total seeds per plant, TP = total pods per plant, SP = average seeds per pod.
‡df for five combined environments due to no visual IDC differences at Prosper.
§IDC is averaged over five environments due to no visual IDC differences at Prosper.