Table 1 Composition of the two media used for studying the effect of acid stress factors on nodulation and growth of soybean

1

CaCl₂ · 2H₂0

1000 μM

2500 μM

2

KH₂P0₄

500 μM

1000 μM

3

K₂HPO₄

-

1000 μM

4

Fe citrate

10 μM

-

5

Fe(III)-EDTA

-

100 μM

6

MgSO₄ · 7H₂0

250 μM

2000 μM

7

K₂SO₄

1500 μM

-

8

KCl

-

1500 μM

Micro nutrient

9

MnSO₄ · H₂0

1 μM

-

10

MnCl₂ · 2H₂O

-

11 μM

11

H₃BO₃

2 μM

46 μM

12

ZnSO₄ · 7H₂0

0.5 μM

-

13

ZnCl₂

-

0.8 μM

14

CuSO₄ · 5H₂0

0.2 μM

-

15

CuCl₂ · 2H₂O

-

0.3 μM

16

CoSO₄ · 7H₂0

0.1 μM

-

17

Na₂MoO₄ · 2H₂0

0.1 μM

0.1 μM