N added per pot

Cont

ACE

NCE

Chem

Soluble N added (mg)

0.0

162

143

534

Insoluble N added (mg)

0.0

3418

3437

0.0

Total N added (mg)

0.0

3580

3580

534

N in Plants

Above ground biomass (d wt in g)

104

130

135

133

Assumed root: shoot ratio

1.0

1.0

1.0

1.0

% N in plants

1.0

1.0

1.0

1.0

Calculated Plant N (mg)*

2080

2860

4590

2926

Added N/Plant N X 100 (%)

0

125

78

18

*Calculated as above ground biomass X 2 X %N, Cont – Control; ACE - Aerated Compost Extract; NCE- Non Aerated Compost Extract; Chem - Chemical Fertilizer.
Table 5: Mass balance of N in compost extract and tomato crop grown in vertisol in Experiment 2.