From: Drivers of rice production: evidence from five Sub-Saharan African countries
Variable groups | Variables | Production models | Production change model | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Model 1 | Model 2 | Model 3 | ||||||||
Period 1 (p 1): t0 to t1 | Period 1 + 2 (p 1+2): t0 to t2 | Period 2 (p 2): t1 to t2 | ||||||||
B | Std. Error | Sig. | B | Std. Error | Sig. | B | Std. Error | Sig. | ||
(Constant) | −2.83 | 3.33 | −34.89 | 33.08 | 1.04 | 1.77 | ||||
Controls | Age of farm under present management in 2002, logged | 0.03 | 0.05 | −0.05 | 0.06 | −0.03 | 0.07 | |||
Descendant households, dummy | −0.45 | 0.24 | 0.34 | 0.30 | 0.45 | 0.34 | ||||
Area | Area under rice, logged (ha) | 0.63 | 0.06 | *** | 0.68 | 0.08 | *** | 0.49 | 0.07 | *** |
Rice variety | Used improved variety in 2002, dummy | −0.01 | 0.11 | |||||||
Used improved variety in 2008, dummy | 0.01 | 0.13 | ||||||||
Always used improved rice variety during the period | 0.12 | 0.21 | ||||||||
Stopped using improved rice variety during the period | 0.36 | 0.20 | ||||||||
Started using improved rice variety during the period | 0.01 | 0.15 | ||||||||
Land type | Always used lowland during the period | 0.02 | 0.11 | −0.07 | 0.13 | −0.08 | 0.16 | |||
Stopped using lowland during the period | 0.35 | 0.28 | 0.01 | 0.17 | 0.01 | 0.19 | ||||
Started using lowland during the period | −0.41 | 0.33 | −0.12 | 0.19 | 0.01 | 0.22 | ||||
Fertilizer | Always used fertilizer during the period | 0.49 | 0.14 | *** | −0.28 | 0.18 | −0.31 | 0.20 | ||
Stopped using fertilizer during the period | −0.03 | 0.16 | −0.06 | 0.22 | −0.44 | 0.32 | ||||
Started using fertilizer during the period | 0.48 | 0.17 | ** | 0.08 | 0.17 | 0.13 | 0.18 | |||
Ploughing | Always used plough during the period | 0.41 | 0.16 | * | 0.39 | 0.21 | 0.23 | 0.20 | ||
Stopped using plough during the period | 0.07 | 0.32 | 0.30 | 0.25 | −0.28 | 0.21 | ||||
Started using plough during the period | 0.03 | 0.15 | 0.31 | 0.17 | 0.23 | 0.21 | ||||
Commercialization | Always sold rice during the period | 0.45 | 0.09 | *** | 0.48 | 0.12 | *** | 0.40 | 0.13 | ** |
Stopped or decreased selling rice during the period | 0.03 | 0.14 | 0.12 | 0.20 | −0.82 | 0.16 | *** | |||
Started or increased selling rice during the period | 0.37 | 0.10 | *** | 0.39 | 0.15 | * | 0.48 | 0.18 | ** | |
Macro-level variables | Share of state budget for agriculture during the period, logged | 0.25 | 0.22 | 2.57 | 2.28 | 1.99 | 1.20 | |||
Import of rice in relation to gross domestic production during the period, logged | −0.43 | 0.17 | * | −1.33 | 0.94 | −2.50 | 1.67 | |||
GDP per capita during the period, logged | 1.45 | 0.54 | ** | 6.08 | 4.86 | −5.09 | 7.49 | |||
Distributional dimensions | Elite membership, dummy | 0.36 | 0.17 | * | 0.04 | 0.20 | 0.01 | 0.17 | ||
Gender of farm manager in 2002, dummy | −0.02 | 0.11 | −0.12 | 0.14 | 0.07 | 0.15 | ||||
Weather | Drought in Eastern and Southern Africa 2002, dummy | −0.35 | 0.24 | |||||||
Floods in West Africa 2008, dummy | −0.89 | 0.43 | * | |||||||
Model info | No. of cases | 284 | 297 | 297 | ||||||
Missing (%) | 10 | 6 | 6 |