Years

Treatments

Number of nodules

per/plant

Weight of dry

nodules (g/plant)

Plant biomass

(g/plant)

2018

PC

(29.1 ± 0.82)a

(1.55 ± 0.03)a

(34.36 ± 1.21)a

PE

(18.23 ± 0.82)b

(0.77 ± 0.03)b

(21.17 ± 1.21)b

PN

(7.42 ± 0.82)c

(0.29 ± 0.03)c

(11.19 ± 1.21)c

P-value

<0.001

<0.001

<0.001

2019

PC

(32.55 ± 1.07)a

(1.67 ± 0.04)a

(36.84 ± 1.12)a

PE

(21.33 ± 1.07)b

(0.88 ± 0.04)b

(25.71 ± 1.12)b

PN

(8.11 ± 1.07)c

(0.31 ± 0.05)c

(14.77 ± 1.12)c

P-value

<0.001

<0.001

<0.001