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Table 4 The effect of vermicompost, biochar and deficit irrigation on physiological traits of eggplant

From: Biochar and vermicompost improve growth and physiological traits of eggplant (Solanum melongena L.) under deficit irrigation

Treatment Chl. a (mg/g FW) Chl. b (mg/g FW) Antiox. capacity (%) Ionic leakage (%) N (%) P (%) K (%) Fe (mg/kg DW) Mn (mg/kg DW) MDH (µg/g FW) POD (µg/g FW) CAT (µg/g FW) SOD (µg/g FW)
S1V0B0 4.0 d 1.5 de 19.3 e 45.3 c 2.3 e 0.3 e 0.6 ef 35.3 d 31.7 cd 0.5 e 1.0 e 3.3 e 95.0 e
S1V0DPB 5.3 c 2.1 c 39.8 d 35.1 d 4.2 cd 0.6 c 1.5 de 51.3 cd 60.6 bc 0.4 e 1.0 e 2.7 e 97.0 e
S1V0PB 6.5 b 2.7 b 49.8 b 30.3 d 5.7 b 0.8 b 2.6 b 84.7 b 80.6 b 0.4 e 1.0 e 4.0 e 98.3 e
S1V1B0 5.5 c 2.1 c 20.7 e 38.1 cd 2.7 e 0.4 d 0.8 e 38.0 d 40.0 c 0.4 e 1.1 de 4.7 de 97.7 e
S1V1DPB 6.8 b 2.7 b 27.5 e 30.0 de 5.3 b 0.8 b 1.8 d 78.5 b 77.5 b 0.5 e 1.2 de 5.3 de 99.0 e
S1V1PB 8.0 a 3.4 a 34.4 de 25.0 e 6.6 a 1.1 a 3.1 a 97.2 a 91.7 a 0.6 de 1.4 d 6.0 de 100.3 e
S2V0B0 2.0 def 1.1 f 27.3 e 53.0 b 1.7 f 0.2 e 0.4 f 18.0 e 25.6 cd 1.7 c 2.2 c 13.3 b 146.0 c
S2V0DPB 2.5 de 1.8 d 51.2 bc 40.7 c 3.5 d 0.5 cd 1.1 e 40.6 d 52.3 c 0.8 d 1.3 d 7.0 d 133.3 c
S2V0PB 3.3 de 2.3 c 74.1 a 37.0 cd 4.8 c 0.7 b 2.2 c 63.7 c 72.3 bc 0.3 e 0.7 e 3.3 e 113.3 d
S2V1B0 2.6 de 1.4 def 27.6 e 45.0 c 2.1 f 0.3 e 0.5 f 26.0 de 31.0 cd 1.1 d 1.8 c 9.7 c 170.7 b
S2V1DPB 3.4 de 2.0 c 50.5 bc 35.0 cd 3.9 cd 0.5 cd 1.5 de 57.5 c 63.5 bc 0.5 de 0.8 e 4.5 e 126.6 d
S2V1PB 4.0 d 2.7 b 59.1 b 25.0 e 5.0 c 0.8 b 2.3 c 78.6 b 82.3 b 0.4 e 0.7 e 3.3 e 118.0 d
S3V0B0 1.2 def 1.0 def 33.3 e 70.0 a 1.4 f 0.2 e 0.4 f 13.3 e 17.5 d 4.0 a 3.7 a 18.7 a 188.3 a
S3V0DPB 1.7 def 1.3 def 55.6 bc 55.0 b 3.2 d 0.4 d 0.9 e 33.7 d 42.0 c 1.8 c 1.9 c 8.5 c 143.4 c
S3V0PB 2.1 def 1.8 d 78.7 a 60.0 b 4.5 c 0.6 c 1.6 de 47.0 d 67.7 bc 0.7 d 1.2 d 4.0 e 123.3 d
S3V1B0 1.4 def 1.0 def 36.6 de 55.1 b 1.8 f 0.2 e 0.3 f 17.8 e 25.0 d 3.5 b 3.1 b 15.0 b 165.0 b
S3V1DPB 2.2 def 1.3 def 61.9 b 45.3 c 3.2 d 0.4 d 1.0 e 42.3 d 51.0 c 1.4 c 1.4 d 6.8 d 130.0 cd
S3V1PB 2.6 def 2.3 c 65.9 b 50.0 bc 4.0 cd 0.6 c 1.9 d 64.7 c 65.6 bc 0.4 e 0.6 e 3.3 e 112.2 d
  1. B0, no biochar; DPB, 500 g m−2 date palm biochar and PB, 500 g m-2 pistachio biochar; V0, no vermicompost and V1, 1500 g m−2; S1, 100% water requirement; S2, 75% water requirement and S3, 50% water requirement; Chl. a, chlorophyll a, Chl. B, chlorophyll b; Antiox capacity, antioxidant capacity; N, nitrogen; P, phosphorous; K, potassium; M, manganese; Fe, iron; MDH, malondialdehyde; POD, guaiacol peroxidase; CAT, catalase and SOD, superoxide dismutase
  2. Different letters within each column are significantly different at P < 0.05 using the Duncan multiple range test