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Chemical and Biological Technologies in Agriculture

Table 5 The effect of vermicompost, biochar and deficit irrigation on soil chemical properties

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

Treatment

pH-KCl

EC (µS/cm)

SOC %

Total N

%

Mineral N (mg/kg)

P–AL (mg/kg)

Ca–AL (mg/kg)

K–AL (mg/kg)

Mg–AL (mg/kg)

S1V0B0

7.2 c

5.2 c

0.7 c

0.07 b

8.3 b

211.7 b

713.5 c

218.1 c

118.3 d

S1V0DPB

8.9 a

7.2 a

1.5 a

0.08 b

8.5 b

219.3 b

724.3 b

231.5 b

131.5 c

S1V0PB

7.9 b

7.8 a

1.6 a

0.08 b

8.6 b

218.9 b

730.8 b

229.7 b

127.3 c

S1V1B0

7.9 b

4.9 c

1.1 b

0.10 a

12.0 a

222.0 a

772.1 a

284.2 a

195.2 a

S1V1DPB

8.5 a

6.5 b

1.5 a

0.10 a

12.3 a

224.1 a

798.7a

275.8 a

185.9 a

S1V1PB

8.0 b

6.7 b

1.5 a

0.10 a

12.5 a

229.2 a

782.5 a

269.9 a

194.1 a

S2V0B0

7.1 c

5.5 c

0.8 c

0.07 b

8.2 b

210.1 b

710.9 c

215.2 c

110.6 d

S2V0DPB

8.5 a

7.4 a

1.6 a

0.08 b

8.5 b

216.0 b

721.6 b

229.7 b

129.9 c

S2V0PB

7.8 b

7.7 a

1.5 a

0.07 b

8.5 b

215.8 b

719.9 b

228.1 b

130.0 c

S2V1B0

7.8 b

4.8 c

1.0 b

0.10 a

11.8 a

229.9 a

767.3 a

276.1 a

179.8 a

S2V1DPB

8.4 a

6.7 b

1.6 a

0.10 a

11.5 a

229.5 a

785.7 a

263.5 a

168.5 b

S2V1PB

8.0 b

6.7 b

1.5 a

0.10 a

11.9 a

231.4 a

790.2 a

265.0 a

175.5 ab

S3V0B0

7.0 c

5.3 c

0.7 c

0.05 c

8.7 b

213.0 b

709.5 c

214.3 c

112.2 d

S3V0DPB

8.8 a

7.1 a

1.4 a

0.08 b

8.3 b

219.6 b

715.2 c

225.4 b

121.5 c

S3V0PB

7.8 b

7.4 a

1.5 a

0.08 b

8.1 b

216.8 b

715.0 c

226.0 b

122.8 c

S3V1B0

7.7 b

4.9 c

1.1 b

0.10 a

11.4 a

227.1 a

758.7 a

265.5 a

164.7 b

S3V1DPB

8.4 a

6.9 b

1.5 a

0.10 a

11.0 a

228.4 a

769.8 a

253.7 a

154.3 b

S3V1PB

7.9 b

6.4 b

1.5 a

0.10 a

11.0 a

227.6 a

770.5 a

258.5 a

149.1 b

  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; EC, electrical conductivity; SOC, soil organic carbon; P–AL, ammonium lactate-extractable phosphorous; Ca–AL, ammonium lactate-extractable calcium; K–AL, ammonium lactate-extractable potassium; Mg–AL, ammonium lactate-extractable magnesium
  2. Different letters within each column are significantly different at P < 0.05 using the Duncan multiple range test
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