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Egyptian Journal of Biological Pest Control

Table 1 Effects of NPK, Azotobacter chroococcum, and Bacillus wiedmannii NRC211 on peanut plants cv. Giza 6 infested with Meloidogyne javanica under field conditions

From: Bio-fertilizers’ protocol for controlling root knot nematode Meloidogyne javanica infecting peanut fields

Treatments #Freq. of app ##Initial Pop J2/250 g soil after one month J2/250 g soil after two month ###Final pop./250 g soil % Red No. of galls/5 g roots % Red No of Egg masses/5 g roots % Red
NPK 1
2
3 		477 a
476 a
475a 		450 de
453 cd
414 ij 		629 cd
577 e
557 ef 		767 b
638 f
502 r 		57.5
66.8
73.8 		123 b
116 c
92.0 hi 		62.6
64.7
72.0 		77 b
68 d
59 gh 		61.6
66.1
70.1
A z 1
2
3 		474 a
475 a
478 a 		475 bc
456 bc
447 de 		625 cd
569 e
543 fg 		671 e
566 j
430 r 		64.9
70.5
77.7 		113 c
103 e
100 ef 		65.6
68.6
69.6 		77 b
68 d
60 gh 		61.6
66.2
70.1
Bw 1
2
3 		475 a
476 a
476 a 		462 bc
429 gh
443 ef 		522 h
484 i
489 i 		541 m
481 o
423 s 		71.8
75.0
78.0 		102 e
98.0 fg
90.0 ij 		68.9
70.2
72.6 		66 de
59 gh
51 jl 		67.2
70.6
74.6
Az + Bw 1
2
3 		476 a
474 a
475 a 		423 hi
410 j
415 de 		530 gh
450 j
440 j 		556 l
448 p
373 t 		93.0
93,6
94.8 		94.0 h
82.0 L
69.0 m 		71.4
75.0
79.0 		58 gh
50 l
40 m 		71.1
75.1
80.1
NPK + Az 1
2
3 		477 a
473a
473a 		469 bc
445 ef
434 fg 		632 c
589 cd
624 cd 		741 c
585 h
430 r 		61.5
89.3
77.5 		108 d
100 e
95.0 gh 		67.1
69.6
71.1 		69 d
64 ef
57 hi 		65.6
68.1
71.6
NPK + Bw 1
2
3 		472 a
478 a
479 a 		477 b
454 bc
453 cd 		652 b
621 cd
609 cd 		704 d
631 g
581 i 		63.0
67.3
69.9 		108 d
101 ef
92.0 hi 		67.1
69.3
72.2 		73 c
64 ef
54 ij 		63.6
68.1
73.1
NPK + Az + Bw 1
2
3 		471 a
476 a
474 a 		462 be
449 de
455 bc 		631 c
613 cd
607 d 		671 e
557 l
440 q 		64.7
71.0
77.7 		113 c
98.0 fg
88.0 j 		65.6
70.2
73.2 		77 b
61 fg
52 jl 		64.6
69.6
74.6
Control 473 473 a 561 a 897 a 1911 a – 329 a – 201 a –
  1. Each value represents mean of five replicates. Mean followed by the same letter (s) within a column is not significantly (P ≥ 0.05) different according to Duncan's multiple range test
  2. Az = Azotobacter chroococcum, (Nitrogen fixing bacteria) Bw = Bacillus wiedmannii NRC211
  3. NPK = Bacillus polymyxa, Bacillus megaterium, Bacillus circulance and Pseudomonas sp
  4. # Freq. of app. #Frequency of application 1- at planting, 2- at planting and after one month, 3- at planting and after two months
  5. ## Initial pop. = Initial population; ### Final pop. = Final population %Red. = Reduction
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