N rate

(kg∙ha−1)

C footprint

(kg CO2-eq ha−1)

C footprint

(kg CO2-eq kg−1 grain)

Biological C

(kg∙ha−1)

Net Carbon

(kg∙ha−1)

0

862d

0.593b

916d

54c

45

1106c

0.342a

1512c

406b

90

1483b

0.280a

2609b

1126a

135

1717a

0.316a

2823a

1106a