Table 4 Impact of mixed compost and nano-micronutrients combinations on catalase activity (U g− 1 protein), peroxidase activity (U g− 1 protein) and total phenolics (mg g− 1 dry weight) of sugar beet in calcareous areas during 2022/2023 and 2023/2024 seasons.

From: Synergistic effects of compost amendment and foliar nano-micronutrients on yield and quality of sugar beet grown in calcareous soil

Treatments

Catalase activity

Peroxidase activity

Total phenolics

Compost level (ton acre− 1)

Nano- trace micronutrients combinations

1st season

2nd season

1st season

2nd season

1st season

2nd season

Zero

Without spraying

1.12

1.51

0.34

0.58

154.57

130.75

Fe + Mn

1.82

1.96

0.51

0.72

174.74

170.72

Fe + B

1.57

1.83

0.44

0.62

175.34

171.84

B + Mn

1.68

1.75

0.33

0.56

182.01

181.52

B + Mn + Fe

1.98

2.15

0.67

0.88

187.10

182.53

3

Without spraying

1.27

1.57

0.40

0.67

172.71

163.97

Fe + Mn

2.92

2.96

0.71

0.82

194.74

175.72

Fe + B

2.97

2.83

0.84

0.92

195.34

171.84

B + Mn

2.98

2.75

0.93

0.96

202.01

181.52

B + Mn + Fe

3.98

3.15

0.97

0.98

217.10

182.53

6

Without spraying

2.31

2.03

0.51

0.76

185.69

215.43

Fe + Mn

2.82

2.96

0.91

0.92

274.74

275.72

Fe + B

2.57

2.83

0.94

1.02

275.34

271.84

B + Mn

2.68

2.75

0.93

1.06

282.01

281.52

B + Mn + Fe

2.98

3.15

0.97

1.08

287.10

282.53

LSD at 0.05

0.15

0.17

0.14

0.12

0.61

1.23

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