Planting time

Seed yield (t∙ha−1)

Cumulative seed yield (t∙ha−1)

Seed yield increase (%) with destructive haulm

Seed tuber (no/ha)

Number increase (%) with destructive haulm

Actual tuber

Cumulative tuber

T1

30.96

30.96

-

918,519

918,519

-

T2

31.86

82.94

167.89

834,815

1,560,741

69.91

T3

28.00

-

-

355,556

-

-

T4

23.08

-

-

370,370

-

-

T5

37.88

37.88

-

923,704

923,704

-

T6

34.89

73.99

95.33

852,593

1,507,408

63.19

T7

21.91

-

-

337,778

-

-

T8

17.19

-

-

317,037

-

-