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Tables 1-7


Table 1: Decadal RCR Estimates by Developing Country Region

Region

1960s

1970s

1980s

1990s

1996-2000
(CGI)
Contribution

Latin America & Caribbean

.111

.198

.175

.284

.192 (.066)

Asia (incl. China)

.078

.075

.229

.204

.147 (.089)

Middle East North Africa

.179

.138

.214

.214

.186 (.069)

Sub-Saharan Africa

.154

-.067

.274

.217

.144 (.028)

Table 2: Modern Variety Diffusion 1970, 1980, 1990, 1998.

Percent area planted to modern varieties

Latin America

Asia (including China

Middle East - North Africa

Sub-Saharan Africa

1970

1980

1990

1998

1970

1980

1990

1998

1970

1980

1990

1998

1970

1980

1990

1998

Wheat

11

46

82

90

19

49

74

86

5

18

38

66

5

22

32

52

Rice

2

22

52

65

10

35

55

65



0

2

15

40

Maize

10

20

30

46

10

25

45

70



1

4

15

17

Sorghum



4

20

54

70



0

8

15

26

Millets



5

30

50

78



0

0

5

14

Barley







2

7

17

49



Lentils







0

0

5

23



Beans

1

2

15

20







0

0

2

15

Groundnut



0

15

20

50



0

0

20

40

Cassava

0

1

2

7

0

0

2

12



0

0

2

18

Potatoes

25

54

69

84

30

50

70

90



0

25

50

78

All crops

8

23

39

52

13

43

63

82

4

13

29

58

1

4

13

27

Table 3: Synthesis: Estimates of MV/TV and MV/MV Impacts on Yield Crop Studies and Country Studies

MV/TV Estimates (Full Replacement)

MB/MV (Turnover) Estimates (Full Turnover)

Crop

Country

Tonnes/ha

Percent
increase

Source

Country

Tonnes/ha

Percent
increase

Source

Consensus

Wheat

India

.98

46

Evenson, '98

China

.74

24

Chapt. 18

45%

India

.98

45

Chapt. 19

Latin America

.2

10

Chapt. 4

Rice

India

.50

33

Gollin &
Evenson, '99

China

1.6

29

Chapt. 12

47%

India

.98

65

Evenson, '98

Brazil

.5

20

Chapt. 20

India

.67

43

Chapt. 19





Sub-Saharan
Africa
(upland)

24

Chapt. 6




Maize

India

.98

65

Chapt. 19

Brazil

.41

20

Chapt. 20

50%

Sub-Saharan
Africa

.60

45

Chapt. 8

Latin America

5-15

Chapt. 7

Sorghum

India

1.38

80

Chapt. 9



45%

India

37-40

Chapt. 9





Sub-Saharan
Africa

7-63

Chapt. 9




Pearl Millet

India

.48

45

Chapt. 19

India

40-45

Chapt. 10

45%

India

45

Chapt. 10





Sub-Saharan
Africa

38

Chapter 10




Barley

Middle
East- North
Africa

25

Chapt. 11



41%

Lentils

Middle
East- North
Africa

41

Chapt. 13



41%

Beans

Latin
America

.21

35

Chapt. 12



25%

Sub-Saharan
Africa

.4

55

Chapt. 12




Cassava

Sub-Saharan
Africa

3.74

49

Chapt. 16



48%

Latin
America

3.29

29

Chapt. 16




Potatoes

Global

2.5

35

Chapt. 15



35%

Table 4: TFP Growth Estimates, Rice, Wheat and Maize. Dependent Variable TFP Growth by Decade

Rice

Wheat

Maize

Pooled

(1)

(2)

(1)

(2)

(1)

(2)

(1)

(2)

1965-76

.147**

.083**

.582**

.431**

.282**

.254**

.231**

.253**

1975-86

.159

.094

.384**

.236**

.186**

.150**

.148**

.160**

1986-95

.059

.015**

.096**

.048**

.308

.279**

.096**

.122**

Wheat






.143**

Rice






-.131**

East-SE Asia

.089**

.309**

.143**

.134**

South Asia

.043

.193**

-.217**

.045*

Middle East
North Africa

.104

-.046

-.128

-.113*

Sub-Saharan
Africa

.102

.192

.018

.170**

# Obser.

162

162

96

96

192

192

450

450

R2

.084

.119

.304

.436

.034

.157

.034

.288

Table 5: TFP-MVA Relationships. Dependent Variable: Cumulated TFP Growth

Independent
variables

Rice

Wheat

Maize

Pooled
(1)

Pooled
(2)







Cumulated MV

.720

.470

.644

.534

Sq (CMVA)

.253 (.73)

Adoption

(3.82)

(1.18)

(3.24)

(2.83)

SQRT (CMVA)

.156 (.82)

(CMVA)



HA x CMVA

4.88 (1.00)

.059

.302

.179

d 1976-85

(.66)

(1.23)

NR

(1.31)

(1.45)

-.048

.355

2.476

.201

.188

d 1985-95

(.42)

(1.17)

(5.43)

(1.57)

(1.32)

-.079

.467

-.019

1.203

.231

Constant

(.89)

(2.43)

(.15)

(.73)

(.95)




.421

-.302

D Wheat


(2.93)

(2.04)




-.218

-.306

D rice


(1.13)

(2.05)

# Obser

51

60

38

149

149

R2

.339

.152

.497

.390

.337

Table 6: CGI Contributions to Yield Growth by Crop

Contribution Shares

Adoption
(1998)

Varieties
(1965-2000)

Crop

1960s

1970s

1980s

1990s

1960-98

IX

IA

IX

IA

Wheat

.514

.981

1.125

.975

.960

.32

.32

.49

.37

Rice

.342

.940

.959

.747

.794

.29

.29

.20

.32

Maize

.311

.481

.733

.906

.665

.23

.32

.28

.19

Sorghum

.055

.391

.716

.676

.504

.22

.16

.16

.11

Millets

.228

.428

.537

.854

.565

.27

.38

.15

.50

Barley

.073

.199

.424

1.01

.490

.50

.30

.49

.20

Lentils

0.0

0.0

.193

.750

.283

.70

.20

.54

.65

Beans

.022

.027

.367

.331

.208

.80

.20

.72

.05

Cassava

0.0

.006

.087

.636

.222

.74

.19

.53

.16

Potatoes

.708

.711

.749

.846

.739

.08

.09

.17

.08

All Crops

.321

.676

.832

.823

.718

.35

.30

.36

.22

IX: Varietal cross made in IARC program
IA: Varietal Cross in NARS program with IARC ancestor

Table 7: CGI Contributions to Yield Growth by Regions

Contribution Shares






Adoption
(1998)

Varieties
(1965-2000)

Region

1960s

1970s

1980s

1990s

1960-98

IX

IA

IX

IA

Latin America

.312

.600

.781

.751

.658

.28

.30

.39

.18

Asia (including China)

.452

.932

1.030

.890

.884

.30

.37

.18

.39

Middle East- North Africa

.141

.270

.681

1.228

.688

.51

.31

.62

.28

Sub-Saharan Africa

.017

.142

.358

.497

.280

.44

.27

.45

.28

All Regions

.321

.676

.832

.823

.718

.35

.34

.36

.19

IX: Varietal cross made in IARC program
IA: Varietal cross in NARS program with IARC assistance

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