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Bulletin of the National Research Centre

Table 3 Effect of nicotinamide and/or humic acid on photosynthetic pigments (mg/g) of fresh faba bean leaf at 75 days after sowing

From: Enhancement quality and quantity of faba bean plants grown under sandy soil conditions by nicotinamide and/or humic acid application

Treatments

Chlorophyll a

Chlorophyll b

Carotenoid

Chlorophyll a + chlorophyll b

Total photosynthetic pigments

Control

1.464

0.399

0. 062

1.863

1.925

Humic acid 5%

1.574

0.541

0.281

2.115

2.396

Nicotinamide 5 mg/L

1.702

0.878

0.207

2.580

2.787

Nicotinamide 10 mg/L

1.925

1.104

0.207

3.029

3.236

Nicotinamide 20 mg/L

1.838

1.339

0.168

3.177

3.345

Nicotinamide 5 mg/L + humic acid 5%

1.567

0.734

0.155

2.301

2.456

Nicotinamide 10 mg/L + humic acid 5%

2.167

1.668

0.270

3.835

4.105

Nicotinamide 20 mg/L + humic acid 5%

2.043

1.296

0.143

3.339

3.482

L.S.D. at 5%

0.42

0.71

0.10

1.03

0.94

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