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Table. 1 Concentration of oxalic, citric and succinic acids (mg kg−1) in leaves extracts from MT Tomato growth in the substrate treated with humic acids (HA), Herbaspirillum seropedicae (BAC) and in combination (HA + BAC) after inoculation or not of Xanthomonas euvesicatoria on the leaves

From: Attenuations of bacterial spot disease Xanthomonas euvesicatoria on tomato plants treated with biostimulants

  Without X. euvesicatoria With X. euvesicatoria
  Oxalic acid
Control 776 (± 103) Aa 1426 (± 1382)A a
HA nd 944 (± 208) A a
BAC 458 (± 648) A a 563 (± 538) A a
HA + BAC nd 700 (± 990) A a
  Citric acid
Control 456 (± 188) A a 1169 (± 319) BC a
HA 748 (± 258) A a 1593 (± 1375) AB a
BAC 547 (± 92) A a 720 (± 398) AB a
HA + BAC 612 (± 327) A b 2244 (± 1115) C a
  Succinic acid
Control 74 (± 0.1) A b 220 (± 129) A a
HA 79 (± 11) A a 131 (± 2) B a
BAC 84 (± 24) A a 75 (± 49) B a
HA + BAC 93 (± 2) A a 120 (± 50) B a
  1. 1Means ± standard deviation followed by same capitals letters in the column and lowercase in the lines are not different by Tukey test. nd not detected in the four repetitions