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Table 2 Effects of NPK, Azotobacter chroococcum and Bacillus wiedmannii NRC211 on peanut plant growth parameters 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

Plant Fresh weight (g)

%Inc

Plant dry weight (g)

%Inc

No. of pods/plant

%Inc

Pods weight/plant (g)

%Inc

weight of 200 seeds (g)

%Change

Yield/ton/Feddan

%Inc

Oil content g/kg

NPK

1

2

3

252 f

351 d

386 d

73.7

142.0

166.2

61.0 n

126 a

134 d

110.3

334.4

362.0

32 j

56 g

63 de

39.1

143.4

173.9

167 j

500 b

591 a

234.0

900.0

1082.0

220 o

290 g

365 b

31.8

65.9

7.0 hi

14.9 c

23.7 a

117.4

363.0

634.8

41.6

37.8

38.8

Az

1

2

3

260 f

340 d

380 c

79.3

134.4

162.0

69.0 m

85.0 i

155 b

137.9

193.1

434.4

52 h

67 ef

82 a

126.0

191.3

256.5

121 n

205 hi

255 f

142.0

310.0

410.0

182 q

243 m

297 f

 − 17.2

10.4

35.0

4.5 im

8.5 gh

13.9 cd

39.1

165.2

330.4

43.3

39.6

35.9

Bw

1

2

3

210 g

270 f

317 e

44.8

86.2

118.6

54.0 o

76.0 l

94.0 h

86.2

162.0

224.1

60 f

66 cd

77 b

160.9

186.9

234.7

166 j

215 h

257 f

232.0

330.0

414.0

226 n

263 j

310 d

2.7

19.5

40.9

4.5 im

6.7 hi

12.0 cd

39.1

108.7

273.9

42.1

38.1

37.5

Az + Bw

1

2

3

201 g

363 f

314 e

38.6

81.3

116.5

43.0 p

81.0 j

113 f

48.2

179.3

289.6

40 i

54 gh

64 de

73.9

134.7

178.2

127 mn

155 i

196 i

154.0

210.0

292.0

165 r

182 q

266 j

 − 25.0

 − 17.2

20.9

8.6 gh

11.1 de

14.4 cd

167.4

245.7

345.7

44.7

46.1

40.9

NPK + Az

1

2

3

146 h

313 e

402 b

0.68

115.8

177.2

33.0 g

74.0 l

102 g

13.8

155.1

251.7

33 j

69 c

82 a

43.4

200.0

256.5

137 lm

262 f

399 c

174.0

424.0

698.0

251 L

280 h

380 a

14.0

27.2

72.7

9.1 fg

12.7 cd

22.8 a

182.6

293.5

608.7

40.7

45.5

47.4

NPK + Bw

1

2

3

261 f

297 e

408 b

80.0

104.8

181.3

52.0 o

83.0 ig

142.0 c

79.3

186.2

389.6

37 i

52 h

62 ef

60.8

126.0

169.5

122 n

232 g

302 e

164.0

364.0

504.0

252 L

287 g

325 c

14.5

30.4

47.7

5.3 jl

8.5 gh

12.3 cd

63.0

165.2

282.6

42.4

43.5

47.3

NPK + Az + Bw

1

2

3

316 e

413 b

499 a

117.9

184.8

244.1

74 l

91.0 h

161 a

155.1

213.7

455.1

39 i

62 ef

74 b

69.5

169.0

221.9

144 L

199 i

350 d

188.0

298.0

600.0

195 p

270 i

301 e

 − 11.3

22.7

36.8

5.7 ij

9.6 ef

19.3 b

76.1

197.8

494.8

43.3

43.6

40.7

Control

 

145 h

29 r

23 l

500

220 o

3.2 m

39.8

  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. % Inc. % increase; Az, Azotobacter chroococcum (nitrogen fixing bacteria); Bw (Bacillus wieidmannii 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