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Table 6 Effect of PGPR isolates applied as soil drenching and bare root dipping prior transplanting on tomato plant growth infested by M. incognita under protected cultivation

From: Nematicidal potential of plant growth-promoting rhizobacteria against Meloidogyne incognita infesting tomato under protected cultivation

Treatments

Root length (cm)

Fresh root weight (g)

 

Soil drenching

Bare root dip

Soil drenching

Bare root dip

 

2019–2020 Mean ± SE

2020–2021 Mean ± SE

2019–2020 Mean ± SE

2019–2020 Mean ± SE

2019–2020 Mean ± SE

2020–2021 Mean ± SE

2019–2020 Mean ± SE

2020–2021 Mean ± SE

Ba

34.30 ± 0.66b

36.50 ± 0.50b

31.70 ± 0.30ab

33.50 ± 0.50ab

60.37 ± 0.98e

55.41 ± 1.49e

66.07 ± 2.26d

59.58 ± 1.49e

Bs

31.00 ± 0.63c

32.20 ± 0.72c

30.10 ± 0.46bcd

29.90 ± 0.40 cd

66.32 ± 1.88d

63.08 ± 1.57d

61.93 ± 1.41d

61.80 ± 1.50e

Pa

35.40 ± 0.70ab

34.70 ± 0.94bc

30.20 ± 0.60bc

31.10 ± 1.21bc

70.82 ± 0.82d

69.63 ± 1.29d

78.95 ± 2.16c

75.17 ± 4.32d

Ba + Bs + Pa

34.70 ± 0.66b

35.90 ± 1.35b

28.70 ± 0.62 cd

31.50 ± 0.95bc

78.75 ± 2.49c

79.00 ± 3.68c

81.69 ± 0.31c

85.67 ± 2.09c

VP

37.40 ± 1.13a

40.20 ± 1.89a

32.90 ± 0.51a

34.90 ± 0.84a

85.70 ± 2.34b

94.69 ± 4.03b

90.85 ± 0.47b

94.88 ± 3.05b

Control

28.50 ± 1.01c

27.90 ± 0.60d

  

106.07 ± 3.14a

112.20 ± 2.13a

  

F value

12.988

14.611

9.436

8.656

66.711

76.039

85.750

56.816

CV

5.972

7.072

4.092

6.037

5.760

6.879

4.842

7.361

CD (0.05)

2.643

3.225

1.639

2.506

5.928

7.170

5.170

7.920

  1. Data shown correspond to the mean of four replicates ± SE. Means with the same alphabet letters on each columns are not significantly (P < 0.05) different
  2. CD critical difference, CV coefficient of variation, SE standard error. Treatment details: Ba Bacillus amyloliquefaciens DSBA 11, Bs Bacillus subtilis DTBS 5, Pa Pantoea agglomerans; Ba + Bs + Pa (Consortium), VP Velum Prime® (500 g a.i./ha) as positive control