Table 3 Effect of two Trichoderma and Aspergillus species isolates and Bacillus subtilis on the severity of decline disease and seedlings growth, three months after the inoculation of apple seedlings ‘MM106’ by Pythium ultimum

NIC

1.33 ± 0.58^a*

1.33 ± 0.58^a

90.33 ± 11.02^c

11.81 ± 1.32^ab

IC

3.00 ± 0.00^b

3.00 ± 0.00^b

23.00 ± 8.89^a

3.87 ± 1.57^a

Aspergillus candidus A5

1.33 ± 0.58^a

2.67 ± 0.58^ab

50.50 ± 5.63^ab

11.10 ± 3.18^ab

A. niger A10

1.67 ± 0.58^a

1.67 ± 0.58^ab

57.67 ± 12.01^abc

17.91 ± 3.53^b

Trichoderma harzianum Tr9

1.67 ± 0.58^a

1.67 ± 0.58^ab

54.50 ± 4.77^ab

11.85 ± 2.74^ab

T. harzianum Tr10

1.33 ± 0.58^a

1.67 ± 0.58^ab

62.83 ± 18.54^bc

8.57 ± 7.26^ab

Bacillus subtilis B

1.33 ± 0.58^a

1.67 ± 0.58^ab

67.00 ± 6.56^bc

8.90 ± 2.89^ab

T. harzianumTr9 + Tr10

1.33 ± 0.58^a

2.67 ± 0.58^ab

59.33 ± 12.10^abc

10.99 ± 2.25^ab

A. candidus A5 + A. niger A10

1.67 ± 0.58^a

1.33 ± 0.58^a

48.67 ± 18.04^ab

11.41 ± 6.40^ab

B. subtilis B + T.harzianum Tr10

3.00 ± 0.00^b

2.33 ± 0.58^ab

34.83 ± 25.26^ab

2.60 ± 2.88^a

p value**

 ≤ 0.05

 ≤ 0.05

 ≤ 0.05

 ≤ 0.05