Table 2 Effect of caffeic acid (CA), cobalt sulfate (CoSO4), and nanoparticle coated urea (NPCU) on N, P, K, and Ca concentration of leaves of potatoes.

From: Effect of caffeic acid and cobalt sulfate on potato (Solanum tuberosum L.) plants in the presence and absence of nanoparticles-coated urea

Treatment

Leave N (%)

Leave P (%)

Leave K (%)

Leave Ca (%)

 

No NP

Control

3.65f

1.62 g

3.16f

0.40e

20 μM CA

3.73de

2.40e

3.54de

0.43d

0.15 mg/L CoSO4

3.70e

2.00f

3.31ef

0.41de

20 μM CA + 0.15 mg/L CoSO4

3.77d

3.12d

3.70 cd

0.44c

 

NPCU

Control

3.84c

3.54c

3.88bc

0.45c

20 μM CA

3.94ab

4.41a

4.15b

0.48b

0.15 mg/L CoSO4

3.91b

3.99b

4.15b

0.47b

20 μM CA + 0.15 mg/L CoSO4

3.95a

4.72a

4.71a

0.50a

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