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| Registros recuperados: 20 | |
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| Crowe, Bronwyn; White, Benedict. |
| Conservation and restoration of native vegetation is often a gradual process which may require many years to transform an ecosystem from one vegetative state to a target ecosystem. This process is stochastic, with some changes potentially irreversible. In contrast, contracts with landholders to undertake conservation measures on their property are typically for less than ten years and often make no contingencies for re-contracting at the end of the contract period. The risk to land holders and conservation agencies of contracts not being renewed and the consequent potential loss of previous investment means including covenants in conservation contracts may be attractive to both parties. A model is developed to empirically examine the optimal dynamic... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: POMDP; Biodiversity; Contracts; Monitoring; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/9457 |
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| Thibbotuwawa, Manoj; Mugera, Amin W.; White, Benedict. |
| This article investigates the production efficiency of rice farming in Sri Lanka using cross section survey data of 90 farms. Past studies on rice farming have mostly focused on technical efficiency (TE). Here, we examine technical efficiency, allocative efficiency (AE) and cost efficiency (CE) using the data envelopment analysis (DEA) approach. On average, the farms were 87% technically efficient; irrigated farms were more efficient (88%) than rain-fed farms (82%). Average cost, allocative and scale efficiencies were 73%, 84% and 87%. Bias corrected TE estimate suggests an expected output expansion of 25% with a given input combination in order to become fully efficient as opposed to 16% based on the original estimates. In addition, a second stage Tobit... |
| Tipo: Presentation |
Palavras-chave: Technical efficiency; Cost efficiency; Bootstrap; Rice farming; Sri Lanka; Crop Production/Industries. |
| Ano: 2012 |
URL: http://purl.umn.edu/124423 |
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| Ozanne, Adam; White, Benedict. |
| Moxey, White and Ozanne (1999) have shown how transfer payments coupled with input quotas can be used to design optimal truth-telling mechanisms for voluntary agri-environmental schemes under hidden information about compliance costs. Ozanne, Hogan and Colman (2001) adapted the Moxey et al. model to analyze hidden action in such schemes, analyzing the relationships between input abatement, the cost of monitoring compliance and farmers’ risk preferences. White (2002) extended the Moxey et al. model to analyze the design of contracts under both hidden action and hidden information, but used an input charge/transfer payment approach rather than the original input quota/transfer payment one. In addition, he assumed that farmers caught cheating face a variable... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/58196 |
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| Abougamos, Hoda; White, Benedict; Sadler, Rohan. |
| The export of grain from Western Australia depends upon a grain supply network that takes grain from farm to port through Cooperative Bulk Handling receival and storage sites. The ability of the network to deliver pest free grain to the port and onto ship depends upon the quality of grain delivered by farmers and the efficacy of phosphine based fumigation in controlling stored grain pests. Phosphine fumigation is critical to the grain supply network because it is the cheapest effective fumigant. In addition, it is also residue free. Unfortunately, over time, common stored-grain pests have evolved to develop resistance to phosphine and there is a risk that phosphine will become less effective and may need to be replaced with more expensive alternative... |
| Tipo: Presentation |
Palavras-chave: Principal-agent model; Supply contracts; Moral hazard; Stored grain; Biosecurity; Crop Production/Industries. |
| Ano: 2012 |
URL: http://purl.umn.edu/124216 |
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| Cattle, Nathan; White, Benedict. |
| The production performance of wheatbelt farms in Western Australia is analysed to determine whether potential to exploit scale economies and improve technical efficiency has driven the trend towards increased farm size. An input-orientated stochastic frontier model is used to estimate technical efficiency and scale economies using an unbalanced panel dataset provided by BankWest for the period 1995/1996 to 2005/2006. Differences in the relative efficiency of farms are explored by the simultaneous estimation of a model of inefficiency effects. The results show the majority of wheatbelt farms operate at high levels of technical efficiency and experience increasing returns to scale. Over the study period farms became bigger to benefit from economies of scale,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Stochastic frontier; Agriculture; Farm size; Scale economies; Technical efficiency; Productivity Analysis. |
| Ano: 2007 |
URL: http://purl.umn.edu/10392 |
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| White, Benedict; Burton, Michael P.. |
| The principle motivation for using price-discriminating conservation auctions is that they are expected to be significantly more cost-effective than fixed-price mechanisms. This paper measures cost effectiveness for tenders from two rounds of the Auction for Landscape Recovery in Western Australia relative to counterfactual fixed-price mechanisms. If we assume that the bid equals the compliance cost, the auction gives a significant cost saving over fixed-price mechanisms. If instead we assume that bids include an element of rent, fixed-price mechanisms can be more cost effective than the auction. The significance of these results is that a fixed price scheme may achieve a similar level of cost effectiveness to a conservation auction, when one or more... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Auctions; Conservation; Bio-diversity; Environmental Economics and Policy; Q57. |
| Ano: 2010 |
URL: http://purl.umn.edu/97798 |
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| Beltran, Jesusa C.; Pannell, David J.; Doole, Graeme J.; White, Benedict. |
| This paper describes a complex, dynamic simulation model that has been developed for the analysis of integrated weed management programmes for the control of annual barnyardgrass (Echinochloa crus-galli) in rice farming systems in the Philippines. Users of the model may simulate any feasible combination of 49 weed treatments options across wet and dry cropping seasons over 5, 10, 15, and 20 year periods, subject to a predetermined sequence of planting methods. The main outputs of the model include weed seed and plant densities and seasonal and annualised profit over the simulated planning horizon. Model output emphasises the substantial economic benefits associated with effective long-term weed management strategies. In addition, the most-profitable weed... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Barnyardgrass; Bioeconomic model; Integrated weed management; Rice farming systems.; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Farm Management. |
| Ano: 2011 |
URL: http://purl.umn.edu/104637 |
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| Crowe, Bronwyn; White, Benedict; Pannell, David J.. |
| Paying private landholders for environmental services, rather than input-based payments, has been proposed as a way to improve the performance of contracts for conservation agencies. A challenge is that the assessment of environmental services is subjective, raising the question of how assessment accuracy impacts on landholder behaviour and contract design. A model is developed of a contract between a conservation agency and a private landholder for the provision of environmental services. The model is used to estimate the impact of inaccurate and costly assessment on the optimal landholder labour effort and the optimal incentive payment. The model shows that inaccurate and costly assessment reduces the cost-effectiveness of the contract. Application of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agribusiness. |
| Ano: 2010 |
URL: http://purl.umn.edu/58876 |
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| Registros recuperados: 20 | |
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