|
|
-
Recursos bibliográficos en papel y digitales -
- libros, artículos de revistas,
ponencias de eventos, etc. -
» Resultado:
15 registros
| Registro 1 de 15 |
| Autor: |
Gorst, Ashley - Dehlavi, Ali - Groom, Ben - |
| Título: |
Crop productivity and adaptation to climate change in Pakistan |
| Fuente: |
Environment and Development Economics. v.23, n.6. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 679-701 |
| Año: |
dec. 2018 |
| Resumen: |
The effectiveness of adaptation strategies is crucial for reducing the costs of climate change. Using plot-level data from a specifically designed survey conducted in Pakistan, we investigate the productive benefits for farmers who adapt to climate change. The impact of implementing on-farm adaptation strategies is estimated separately for two staple crops: wheat and rice. We employ propensity score matching and endogenous switching regressions to account for the possibility that farmers self-select into adaptation. Estimated productivity gains are positive and significant for rice farmers who adapted, but negligible for wheat. Counterfactual gains for non-adapters were significantly positive, which is potentially a sign of transactions costs to adaptation. Other factors associated with adaptation were formal credit and extension, underscoring the importance of addressing institutional and informational constraints that inhibit farmers from improving their farming practices. The findings provide evidence for the Pakistani Planning and Development Department’s ongoing assessment of climate-related agricultural losses. |
| Palabras clave: |
AGRICULTURA |
CULTIVOS |
CAMBIO CLIMATICO |
PRODUCTIVIDAD |
|
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
| Registro 2 de 15 |
| Autor: |
Ali Akram, Agha - Mendelsohn, Robert - |
| Título: |
Agricultural water allocation efficiency in a developing country canal irrigation system |
| Fuente: |
Environment and Development Economics. v.22, n.5. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 571-593 |
| Año: |
oct. 2017 |
| Resumen: |
There is ample evidence that canal systems often fail to reach their design capacity. This study argues that inefficient allocation of water within canals is one cause. This study collects precise measures of farm-level water withdrawals using flow meters in a canal in Pakistan. These data reveal that farmers near the head of the canal get more canal water than farmers near the tail, even accounting for conveyance efficiency. The results suggest that improvements in canal water management would yield efficiency gains for the canal. |
| Palabras clave: |
AGRICULTURA |
AGUA |
SISTEMAS DE RIEGO |
|
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
| Registro 3 de 15 |
| Autor: |
Bakhsh, Khuda |
| Título: |
Impacts of Bt cotton on profitability, productivity and farm inputs in Pakistan: use of panel models |
| Fuente: |
Environment and Development Economics. v.22, n.4. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 373-391 |
| Año: |
aug. 2017 |
| Resumen: |
This study estimates the benefits from adopting Bt cotton seeds in Punjab, Pakistan over two cropping seasons - 2008 and 2009. The study uses the panel modeling approach to determine the average effects of Bt cotton technology on short-run profits, yields and farm inputs. This approach controls for biases resulting from self-selection and endogenous farm inputs. The study shows that, on average, Bt adopting farmers receive 9 per cent higher yields per hectare (ha), reduce per-ha pesticide use by 21.7 per cent, and increase per-ha use of irrigation water by 6 per cent. Our estimates of the increase in cotton yield are far below estimates from previous studies conducted in Pakistan and India, which do not use panel methods. Allowing more Bt cotton varieties and ensuring the availability of quality Bt cotton seeds in the market is likely to lead to further increase in the private benefits from Bt cotton. |
| Palabras clave: |
AGRICULTURA |
ALGODON |
|
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
| Registro 4 de 15 |
| Autor: |
Kurosaki, Takashi |
| Título: |
Vulnerability of household consumption to floods and droughts in developing countries: evidence from Pakistan |
| Fuente: |
Environment and Development Economics. v.20, n.2. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 209-235 |
| Año: |
Apr. 2015 |
| Resumen: |
Aggregate shocks such as droughts and floods cannot be perfectly insured by risk sharing within a village. Given this inability, what type of households are more vulnerable in terms of a decline in consumption when a village is hit by such shocks and what kind of microeconomic mechanism underlies the household heterogeneity in vulnerability? These questions are investigated using two-period panel data collected in rural Pakistan in 2001 and 2004. We compare consumption response to droughts, floods and health shocks and investigate how the response differs across different types of households. Empirical results show that the impact of droughts was negligible, younger and more landed households were less vulnerable to floods, and households with greater access to formal financial institutions were less vulnerable to idiosyncratic health shocks. The empirical pattern suggests the possibility of risk sharing among households that are heterogeneous in both risk aversion and credit access. |
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
| Registro 5 de 15 |
| Autor: |
Kouser, Shahzad - Qaim, Matin - |
| Título: |
Bt cotton, damage control and optimal levels of pesticide use in Pakistan |
| Fuente: |
Environment and Development Economics. v.19, n.6. Beijer Institute of Ecological Economics; Royal Swedish Academy of Sciences |
| Páginas: |
pp. 704-723 |
| Año: |
Dec. 2014 |
| Resumen: |
We use farm survey data and a damage control framework to analyze impacts of Bt cotton on yields and pesticide use in Pakistan. We also derive optimal levels of pesticide use with and without Bt, taking into account health and environmental externalities. This has not been done previously in the literature. Conventional cotton growers suffer from significant insect crop damage; they underuse pesticides from a profit-maximizing perspective. Yet, the picture is reversed when externalities are also considered. The social optimum of pesticide use is much lower than the private optimum, and both optima are lower with Bt than without this technology. Bt controls pest damage more effectively. Hence, yields on Bt farms are about 20 per cent higher in spite of lower pesticide use. Large pest damage is a typical phenomenon in developing countries. In such situations, Bt can contribute to productivity growth, while reducing pesticide applications and associated negative externalities. |
| Palabras clave: |
ALGODON |
PRODUCTIVIDAD |
MEDIO AMBIENTE |
PESTICIDAS |
EXTERNALIDADES |
|
| Solicitar por: |
HEMEROTECA E + datos de Fuente |
>> Nueva
búsqueda
<<
Inicio
|
