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Table 7 Damage reduction rate of top and root dry weight (%) and disease severity index values recorded by watermelon and melon seedlings inoculated with two M. phaseolina isolates and treated preventively by four Aspergillus spp. isolates, two Penicillium spp. isolates, and two Trichoderma spp. isolates in vivo assay

From: Evaluation of the efficiency of Trichoderma, Penicillium, and Aspergillus species as biological control agents against four soil-borne fungi of melon and watermelon

 

Preventive treatment

Damage reduction rate of shoot dry weight %a

Damage reduction rate of root dry weight %a

Disease severity indexa

Cultivars

MP1

MP2

MP1

MP2

MP1

MP2

Watermelon

A. flavus

14.88bb

19.39c

11.73c

19.40c

2.33a

2.67a

A. fumigatus

8.94c

22.19b

35.09b

50.18a

2.33a

1.83abc

A. niger

31.97ab

27.70b

15.92c

27.70b

2.33a

1.50bc

P. italicum

13.75b

20.87b

26.85bc

43.00ab

2.17b

2.17ab

P. digitatum

43.36ab

33.56b

27.78bc

33.57abc

1.67b

1.50ab

T. viride

40.42ab

44.22b

34.30b

44.22ab

1.33b

1.33abc

T. harzianum

51.11a

52.71a

54.33a

52.71a

1.50b

1.50c

P valuec

 

> 0.05

> 0.05

> 0.05

> 0.05

> 0.05

> 0.05

Melon

A. flavus

3.69c

14.09c

18.31b

16.92d

1.33ab

2.00a

A. fumigatus

12.64c

28.40b

30.58ab

26.99cd

2.67a

1.33ab

A. niger

29.51ab

35.91b

26.29ab

37.35abc

1.50ab

1.33ab

P. italicum

7.38c

23.44c

20.25ab

27.90cd

1.50ab

1.50ab

P. digitatum

34.42a

39.51a

34.06a

33.30bcd

1.33ab

0.83b

T. viride

30.56ab

29.09b

35.41a

48.18ab

1.50ab

1.33ab

T. harzianum

27.80b

29.52b

37.23a

50.68a

1.33ab

0.50b

P valuec

 

> 0.05

> 0.05

> 0.05

> 0.05

> 0.05

> 0.05

  1. aDamage reduction rate values present the mean of three replicates (5 plants/replicate); R (%) = ((DWA − DWP) / DWA) × 100, where DWA is the dry weight (shoot and root) of inoculated plants with antagonist and DWP is the dry weight (shoot and root) of inoculated plant with only the pathogen and disease severity index scale, which present the mean of three replicates (5 plants/replicate)
  2. bDuncan’s multiple range test: means followed by different letters are significantly different at P ≤ 0.05