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Table 5 Shoot dry weight (SDW) and total N accumulated in shoots (TNS) at V4 and grain yield at the maturity of maize hybrid DKB 350 YG inoculated or not Azospirillum brasilense strains Ab-V5 + Ab-V6 and supplemented or not with concentrated metabolites of Rhizobium tropici CIAT 899 (CM-RT1)

From: Biotechnological potential of rhizobial metabolites to enhance the performance of Bradyrhizobium spp. and Azospirillum brasilense inoculants with soybean and maize

Treatment/Site

Bonito

Ponta Grossa

Três Lagoas

 

V4

 

V4

 

V4

 
 

SDW

TNS

Yield

SDW

TNS

Yield

SDW

TNS

Yield

 

(g pl –1)

(mg pl –1)

(kg ha –1)

(g pl –1)

(mg pl –1)

(kg ha –1)

(g pl –1)

(mg pl –1)

(kg ha –1)

0%N

13.1 a

402 a

5452 b

17.2 c

255 c

5708 c

7.1 c

161 b

2444 b

100%N

16.1 a

510 a

6184 ab

26.4 ab

558 ab

8483 a

9.7 a

252 a

2965 ab

75% N

12.4 a

407 a

5516 b

24.2 ab

511 b

7964 ab

9.4 ab

243 a

3010 ab

75% N + Inoculated with A. brasilense

14.0 a

412 a

5625 ab

22.1 bc

445 b

7208 b

7.9 bc

201 b

3319 a

75% N + Inoculated with A. brasilense + CM-RT1 (1 mL L–1)

11.5a

399 a

6091 ab

25.5 ab

542 ab

7707 ab

7.0 c

172 b

2972 ab

75% N + Inoculated with A. brasilense + CM-RT1 (0.1 mL L–1)

12.9 a

458 a

6561 a

29.5 a

669 a

8113 a

7.9 bc

199 b

3322 a

  1. 1 0.1 and 1.0 mL L–1 correspond to approximately 10–9 and 10–8 M of active compounds, respectively.
  2. 2 Data represent the means of six replicates and when followed by different letters within the same column are significantly different (p ≤ 0.05, Duncan’s test).
  3. All plants received 24 kg of N ha-1 at sowing and 0, 75 or 100% of N (90 kg of N ha-1) at 30 days after emergence, broadcasted. Experiment performed in three field sites in Brazil.