Water regimes/

Potato cultivars

Mean (n = 24)

Agria

Moemoe

Tutaekuri

Nitrogen (kg∙ha⁻¹)

80

240

80

240

80

240

Full irrigation

7.4

6.3

7.7

6.9

7.9

6.8

7.2^b

Partial irrigation

8.4

10.1

7.6

7.9

7.3

7.8

8.2^b

Rain-fed

10.8

11.0

10.1

10.3

8.7

8.5

9.9^a

Mean (n = 24)

9.0^a

8.4^ab

7.8^b

Significance

Cultivars

p < 0.05

Water regimes

p < 0.0001

Nitrogen

Ns

LSD_0.05

1.0809