Entire Sample (N = 1028)

Lowland (N = 596)

Upland (N = 432)

Share Planted

Yield

SD

Share Planted

Yield

SD

Share Planted

Yield

SD

Variety Groups

%

t·ha⁻¹

%

t·ha⁻¹

%

t·ha⁻¹

All^b

100

1.9

1.3

100

2.0

1.4

100

1.7

1.2

Nerica

34

1.9

^*

1.3

8

2.5

^*

1.9

70

1.8

^*

1.2

Supa

31

1.5

^†

1.0

52

1.6

^†

1.0

1

0.9

^*

0.9

Kaiso

7

2.5

^‡

1.7

11

2.4

^*

1.6

1

2.8

^*

3.1

Other Lowland Varieties

11

2.6

^‡

1.6

19

2.6

^*

1.6

2

2.5

^*

1.3

Other Upland Varieties

17

1.9

^*,†

1.2

10

2.2

^*

1.5

26

1.7

^*

1.1