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Table 8 Effect of PGPR isolates applied as soil drenching and bare root dipping prior transplanting on M. incognita multiplication and fruit yield in tomato plants under protected cultivation

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

Treatments

Eggs/egg mass

Reproduction factor

Fruit yield (kg/10 m2)

Soil drenching

Bare root dip

Soil drenching

Bare root dip

Soil drenching

Bare root dip

2019–2020 Mean ± SE

2020–2021 Mean ± SE

2019–2020 Mean ± SE

2020–2021 Mean ± SE

2019–2020 Mean ± SE

2020–2021 Mean ± SE

2019–2020 Mean ± SE

2020–2021 Mean ± SE

2019–2020 Mean ± SE

2020–2021 Mean ± SE

2019–2020 Mean ± SE

2020–2021 Mean ± SE

Ba

219.40 ± 4.80b

192.20 ± 6.63b

229.60 ± 10.93b

213.80 ± 11.10b

0.54 ± 0.04b

0.47 ± 0.03b

0.69 ± 0.09bc

0.53 ± 0.03b

68.11 ± 3.02a

62.16 ± 1.72d

58.73 ± 2.00c

66.29 ± 2.08 cd

Bs

218.60 ± 5.66b

219.20 ± 9.40b

229.40 ± 4.76b

214.80 ± 7.23b

0.63 ± 0.02b

0.53 ± 0.03b

0.80 ± 0.03b

0.63 ± 0.06b

59.96 ± 2.50bc

66.95 ± 3.51 cd

66.91 ± 2.71ab

69.10 ± 3.08bc

Pa

223.40 ± 7.12bc

229.60 ± 14.65b

190.40 ± 42.14bc

230.80 ± 11.15b

0.55 ± 0.01b

0.48 ± 0.02b

0.83 ± 0.05b

0.57 ± 0.02b

58.65 ± 2.48c

70.66 ± 1.15bc

60.86 ± 2.96bc

68.12 ± 2.56bc

Ba + Bs + Pa

222.20 ± 5.48bc

219.40 ± 4.41b

232.60 ± 2.80bc

220.6 0 ± 3.23b

0.61 ± 0.02b

0.55 ± 0.01b

0.62 ± 0.05c

0.61 ± 0.02b

67.43 ± 2.74ab

81.14 ± 1.58a

72.23 ± 4.29a

77.60 ± 1.39a

VP

162.40 ± 5.25c

144.80 ± 4.41b

234.20 ± 6.81c

223.00 ± 5.30b

0.25 ± 0.01c

0.17 ± 0.03c

0.34 ± 0.04d

0.28 ± 0.03c

65.50 ± 2.62abc

74.23 ± 2.81b

67.20 ± 4.49ab

74.62 ± 1.95ab

Control

327.80 ± 8.52a

302.60 ± 8.95a

  

3.28 ± 0.07a

2.93 ± 0.09a

  

52.37 ± 0.72d

50.37 ± 0.28e

  

F value

528.105

242.355

517.122

244.577

1213.267

515.875

494.708

384.059

5.760

26.328

6.795

7.109

CV

17.742

26.814

17.075

25.019

5.787

9.178

7.731

9.502

8.223

6.122

6.752

6.568

CD (0.05)

24.889

33.572

24.893

32.974

0.103

0.143

0.154

0.160

7.683

6.235

6.512

6.866

  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