Skip to main content

Table 1 Effect of bio-control agents, aqueous plant extracts, and citric acid as soil treatment and/or foliar spray on plant enzyme activity of peroxidase, polyphenol oxidase, and chitinase in field application

From: Field application of bio-control agents and aqueous plant extracts for controlling bacterial soft rot and enhancement yield quality of Solanum tuberosum L. cv. Diamond

TreatmentsPlant enzymatic activity
Soil treatmentFoliar spray
PeroxidasePolyphenol oxidaseChitinasePeroxidasePolyphenol oxidaseChitinase
ODIncr.%ODIncr.%ODIncr.%ODIncr.%ODIncr.%ODIncr.%
Bacillus subtilis2.711a*2220.413a10470.088a6332.300abc890.210a4530.067cde379
Bacillus pumilus2.675 a2180.164a3560.078ab5502.583ab1120.195a4130.103bc636
Trichoderma harzianum2.638 a2140.147bc3080.077ab5422.634a1160.187a3920.070 cd400
Trichoderma virens2.665 a2170.141bc2920.053abc3422.609a1140.135bcd2550.106bc657
Lantana2.051 b1440.141bc2920.050bc3172.106bcd730.128 cd2370.017ef21
Lemongrass2.117 b1520.122bc2390.048bc3001.934cde590.165abc3340.133b850
Olive cake2.107 b1510.126bc2500.044c2672.053cde690.183ab3820.064cdef357
Citric acidNT2.197abc800.202a4320.221a1479
PDB medium only1.494 c780.106bc1940.043 cd2581.635def340.054e420.026def86
NB medium only1.665 c980.107bc1970.035 cd1921.609a320.086de1260.030def114
Control0.840 d-0.036 c-0.012 d-1.218f-0.038e-0.014f-
  1. NT not test
  2. *Means in each column followed by different letter(s) are significantly different according to Duncan’s multiple range test at P ≤ 0.05