Introducing deficit irrigation crop techniques derived by crop growth models into a Positive Mathematical Programming model
There is a growing policy pressure to reduce water use in agriculture when this generates sufficiently large environmental benefits and increases the well-being of other water users. Several analysis investigate farmers’ response to water policy by means of mathematical programming models including Positive Mathematical Programming (PMP). The originals PMP methods refer only to activities observed in the reference period. However, under the pressure of new water policies, farmers can adjust not only their cropping patterns but also the irrigation techniques they use. In particular, they could introduce water deficit irrigation crop techniques that were not profitable in past conditions. This paper proposes an extension of the Röhm and Dabbert approach (2003) in order to include deficit irrigation crop techniques not observed in the reference period into a PMP model. These alternative techniques are identified by means of a crop growth model developed by FAO. The proposed methodology is applied to a Mediterranean area performing two sets of simulations considering: the increase of water cost and the reduction of water availability. The results shows that, when water availability decreases, not considering adjustments in irrigation techniques is likely to underestimate the extent of farmers’ response to the new policy scenarios. In facts, introducing deficit irrigation techniques can alleviate the negative impact of decreasing water availability on farm economic results by using more efficiently this resource. However, this is not the case for the considered water cost increases.
|Date of creation:||2008|
|Date of revision:|
|Contact details of provider:|| Web page: http://www.eaae.org|
More information through EDIRC
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Pujol, Joan & Raggi, Meri & Viaggi, Davide, 2006.
"The potential impact of markets for irrigation water in Italy and Spain: a comparison of two study areas,"
Australian Journal of Agricultural and Resource Economics,
Australian Agricultural and Resource Economics Society, vol. 50(3), September.
- Joan Pujol & Meri Raggi & Davide Viaggi, 2006. "The potential impact of markets for irrigation water in Italy and Spain: a comparison of two study areas ," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 50(3), pages 361-380, 09.
- Blanco Fonseca, Maria & Iglesias Martinez, Eva, 2005.
"Modelling New EU Agricultural Policies: Global Guidelines, Local Strategies,"
89th Seminar, February 2-5, 2005, Parma, Italy
240760, European Association of Agricultural Economists.
- Blanco Fonseca, Maria & Iglesias Martinez, Eva, 2005. "Modelling New EU Agricultural Policies: Global Guidelines, Local Strategies," 89th Seminar, February 2-5, 2005, Parma, Italy 232644, European Association of Agricultural Economists.
- Iglesias, Eva & Garrido, Alberto & Gomez-Ramos, Almudena, 2003. "Evaluation of drought management in irrigated areas," Agricultural Economics, Blackwell, vol. 29(2), pages 211-229, October.
- Iglesias, Eva & Garrido, Alberto & Gomez-Ramos, Almudena, 2003. "Evaluation of drought management in irrigated areas," Agricultural Economics of Agricultural Economists, International Association of Agricultural Economists, vol. 29(2), October.
- Bartolini, Fabio & Bazzani, Guido Maria & Gallerani, Vittorio & Raggi, Meri & Viaggi, Davide, 2005. "Water Policy and Sustainability of Irrigated Farming Systems in Italy," 2005 International Congress, August 23-27, 2005, Copenhagen, Denmark 24518, European Association of Agricultural Economists.
- Ottmar Röhm & Stephan Dabbert, 2003. "Integrating Agri-Environmental Programs into Regional Production Models: An Extension of Positive Mathematical Programming," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 85(1), pages 254-265.
When requesting a correction, please mention this item's handle: RePEc:ags:eaae08:44010. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (AgEcon Search)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.