Table 3 ANOVA of effect of bentonite treatments (T) and year (Y) on photosynthetic parameters.

From: Effect of bentonite as a soil amendment on field water-holding capacity, and millet photosynthesis and grain quality

Factors

DF

Pn

Tr

SPAD

WUE

F value

P

F value

P

F value

P

F value

P

T

5

135.97

 < 0.001***

11.19

 < 0.001***

78.9

 < 0.001***

10.08

 < 0.001***

Y

2

50.35

 < 0.001***

87.66

 < 0.001***

95.09

 < 0.001***

73.64

 < 0.001***

T*Y

10

7.65

 < 0.001***

1.73

NS

2.38

0.014*

0.47

NS

  1. *and ***Significant at 0.05 and 0.001 level respectively; NS means not significant. Pn: net photosynthetic rate; Tr: transpiration rate; SPAD: leaf soil plant analysis development; WUE: leaf water use efficiency. Pn, Tr, SPAD, and WUE were measured at 90 d after sowing over the last three years, 2013 to 2015.