@article{goodwin_piggott_2020, title={Has Technology Increased Agricultural Yield Risk? Evidence from the Crop Insurance Biotech Endorsement}, volume={102}, ISSN={["1467-8276"]}, DOI={10.1002/ajae.12087}, abstractNote={The conventional wisdom that technological advances in seed breeding and genetic modification of corn traits have lowered yield risk has recently been challenged by research that argues that the converse is true. The implications of this research have been applied to models of climate change and have led to the conclusion that these advances have actually increased agronomic risk, such that climate change is asserted to raise important concerns regarding the stability and viability of agricultural output in the future. In a large body of empirical work, the argument is based upon assertions that corn yields have become more sensitive to weather stresses. This increased sensitivity has coincided with the introduction of a variety of genetically engineered (GE) crops in the 1990s and 2000s. We use corn yields and data from the US federal crop insurance program to evaluate these claims. An initial examination of yield responses to droughts in 1988 and 2012 suggests more robust yields in the latter period, in spite of very comparable weather stresses. We next consider side‐by‐side data collected under the Biotech Endorsement (BE) to the federal crop insurance program between 2008 and 2011. This endorsement provided substantial discounts for growers using certain GE hybrids, reflecting policymakers' beliefs that these hybrids had lower yield risk. We find that risk, as measured by the rate of indemnities paid per units insured, was significantly lower for crops insured under the BE. We also find that the difference in risk tends to be greater when growing conditions are less favorable.}, number={5}, journal={AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS}, author={Goodwin, Barry K. and Piggott, Nicholas E.}, year={2020}, month={Oct}, pages={1578–1597} }
 @article{tighe_piggott_cacho_mounter_villano_2019, title={Testing for pre-committed quantities of Australian meat demand}, volume={63}, ISSN={["1467-8489"]}, DOI={10.1111/1467-8489.12300}, abstractNote={Pre‐committed consumption represents the portion of demand that is determined by non‐price and non‐income factors. This study uses quarterly data to estimate a Generalised Almost Ideal Demand System (GAIDS) to test for the existence of pre‐committed meat consumption in Australia. Two specifications are estimated to evaluate the impact of seasonal and time trend factors on pre‐committed demand. Evidence is found for the existence of pre‐committed chicken consumption when jointly estimated with seasonal and time trend factors. Results support improved demand modelling of Australian meat consumption using the GAIDS and provide insights into how Australian meat demand is affected by price, expenditures, pre‐committed consumption, seasonality, and trends.}, number={2}, journal={AUSTRALIAN JOURNAL OF AGRICULTURAL AND RESOURCE ECONOMICS}, author={Tighe, Kara and Piggott, Nicholas and Cacho, Oscar and Mounter, Stuart and Villano, Renato}, year={2019}, month={Apr}, pages={247–264} }
 @article{goodwin_marra_piggott_2016, title={The cost of a GMO-free market basket of food in the US}, volume={49}, journal={Coexistence of genetically modified, organic and conventional foods: government policies and market practices}, author={Goodwin, B. K. and Marra, M. and Piggott, N.}, year={2016}, pages={363–378} }
 @article{bekkerman_goodwin_piggott_2013, title={A variable threshold band approach to measuring market linkages}, volume={45}, ISSN={["0003-6846"]}, DOI={10.1080/00036846.2012.671925}, abstractNote={Uncertain and changing economic conditions can have substantial effects on price relationships in spatially separated, linked markets. Although numerous studies have analysed price relationships to characterize market linkage structures, most assume that the relationships and associated linkages are time invariant. This study extends the literature by modelling and estimating time-dependent market linkages that are conditional on changes in exogenous factors. The methodology is used to investigate price relationships in North Carolina (NC) corn and soya bean markets. Empirical results indicate that generalized market-linkage models provide a better representation of price relationships over time, improving the understanding of price discovery dynamics and marketing strategies.}, number={19}, journal={APPLIED ECONOMICS}, author={Bekkerman, Anton and Goodwin, Barry K. and Piggott, Nicholas E.}, year={2013}, pages={2705–2714} }
 @article{bekkerman_piggott_goodwin_jefferson-moore_2012, title={A Market-based Mitigation Program for Wind-borne Diseases}, volume={41}, ISSN={1068-2805 2372-2614}, url={http://dx.doi.org/10.1017/S1068280500003336}, DOI={10.1017/S1068280500003336}, abstractNote={Wind-borne diseases can spread rapidly and cause large losses. Producers may have little incentive to prevent disease spread because prevention may not be welfare-maximizing. This study proposes a market-based mitigation program that indemnifies producers against disease-related losses and provides an incentive to neighboring producers to take preventive action, which can substantially mitigate infestations, reduce the likelihood of catastrophic losses, and increase social welfare. An equilibrium displacement model simulates introduction of the program for U.S. soybeans. Simulations reveal that the market-based solution contributes to minor market distortions but also reduces social welfare losses and could succeed for other at-risk commodities.}, number={2}, journal={Agricultural and Resource Economics Review}, publisher={Cambridge University Press (CUP)}, author={Bekkerman, Anton and Piggott, Nicholas E. and Goodwin, Barry K. and Jefferson-Moore, Kenrett}, year={2012}, month={Aug}, pages={175–188} }
 @article{goodwin_piggott_2009, title={Spatiotemporal Modeling of Asian Citrus Canker Risks: Implications for Insurance and Indemnification Fund Models}, volume={91}, ISSN={["1467-8276"]}, DOI={10.1111/j.1467-8276.2009.01321.x}, abstractNote={Abstract}, number={4}, journal={AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS}, author={Goodwin, Barry K. and Piggott, Nicholas E.}, year={2009}, month={Nov}, pages={1038–1055} }
 @article{bekkerman_goodwin_piggott_2008, title={Spatio-temporal risk and severity analysis of soybean rust in the United States}, volume={33}, number={3}, journal={Journal of Agricultural and Resource Economics}, author={Bekkerman, A. and Goodwin, B. K. and Piggott, N. E.}, year={2008}, pages={311–331} }
 @article{piggott_marsh_2004, title={Does food safety information impact US meat demand?}, volume={86}, ISSN={["1467-8276"]}, DOI={10.1111/j.0092-5853.2004.00569.x}, abstractNote={A theoretical model of consumer response to publicized food safety information on meat demand is developed with an empirical application to U.S. meat consumption. Evidence is found for the existence of pre-committed levels of consumption, seasonal factors, time trends, and contemporaneous own- and cross-commodity food safety concerns. The average demand response to food safety concerns is small, especially in comparison to price effects, and to previous estimates of health related issues. This small average effect masks periods of significantly larger responses corresponding with prominent food safety events, but these larger impacts are short-lived with no apparent food safety lagged effects on demand.}, number={1}, journal={AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS}, author={Piggott, NE and Marsh, TL}, year={2004}, month={Feb}, pages={154–174} }
 @article{wohlgenant_piggott_2003, title={Distribution of gains from research and promotion in the presence of market power}, volume={19}, ISBN={0742-4477}, DOI={10.1002/agr.10060}, abstractNote={Abstract}, number={3}, journal={Agribusiness}, author={Wohlgenant, M. K. and Piggott, N. E.}, year={2003}, pages={301} }
 @article{piggott_2003, title={Measures of precision for estimated welfare effects for producers from generic advertising}, volume={19}, ISBN={0742-4477}, DOI={10.1002/agr.10067}, abstractNote={Abstract}, number={3}, journal={Agribusiness}, author={Piggott, N. E.}, year={2003}, pages={379} }
 @article{piggott_2003, title={The Nested PIGLOG model: An application to US food demand}, volume={85}, ISSN={["0002-9092"]}, DOI={10.1111/1467-8276.00099}, abstractNote={Abstract}, number={1}, journal={AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS}, author={Piggott, NE}, year={2003}, month={Feb}, pages={1–15} }
 @article{alston_chalfant_piggott_2002, title={Estimating and testing the compensated double-log demand model}, volume={34}, ISSN={["0003-6846"]}, DOI={10.1080/00036840110086003}, abstractNote={In spite of the proliferation of flexible functional forms for consumer demand systems, the double-log demand model continues to be popular, especially in applied work calling for single-equation models. It is usually estimated in uncompensated form. It can also be estimated in compensated form, by deflating the income variable alone using Stone's price index. The compensated form has the same right-hand side as a single-equation version of the popular linear approximation to the Almost Ideal demand model, facilitating the construction of a test for choosing between the two alternatives. This paper demonstrates these results, develops the specification test, and illustrates its application using US meat consumption data. Simulations suggest that the test is well-behaved with good power in typical applications.}, number={9}, journal={APPLIED ECONOMICS}, author={Alston, JM and Chalfant, JA and Piggott, NE}, year={2002}, month={Jun}, pages={1177–1186} }
 @article{piggott_wohlgenant_2002, title={Price elasticities, joint products, and international trade}, volume={46}, ISSN={["1364-985X"]}, DOI={10.1111/1467-8489.t01-1-00056}, abstractNote={This paper extends the basic results of Houck's insight for derived demand elasticities for the case of joint products by allowing for the possibility of the joint and raw products being traded. Theoretical relationships between individual demands for a set of jointly–produced commodities that are traded and composite demand for the raw product from which the joint products originate are derived. It is shown that while the derived price elasticity of domestic demand retains the same form as Houck's original formula, the relevant price elasticities of demand to include in the formula are elasticities of total demand instead of domestic demand elasticities. Using the USA soybean industry as an example, this generalised formula that takes into account trade is implemented to calculate the elasticity of total demand for USA soybeans. The usefulness of this formula for policy–makers to trace out the impacts of changes in market conditions and trade policy in the joint–products, and how it will impact the price elasticity of domestic and total demand for the raw product, is demonstrated.}, number={4}, journal={AUSTRALIAN JOURNAL OF AGRICULTURAL AND RESOURCE ECONOMICS}, author={Piggott, NE and Wohlgenant, MK}, year={2002}, month={Dec}, pages={487–500} }
 @article{alston_chalfant_piggott_2001, title={Incorporating demand shifters in the Almost Ideal demand system}, volume={70}, ISSN={["0165-1765"]}, DOI={10.1016/S0165-1765(00)00322-0}, abstractNote={Intercepts of share equations generally include demand shift variables. In the Almost Ideal demand system and related models, this results in estimates that depend on units of measurement. Solutions to this problem are identified and discussed.}, number={1}, journal={ECONOMICS LETTERS}, author={Alston, JM and Chalfant, JA and Piggott, NE}, year={2001}, month={Jan}, pages={73–78} }
 @article{goodwin_piggott_2001, title={Spatial market integration in the presence of threshold effects}, volume={83}, ISSN={["0002-9092"]}, DOI={10.1111/0002-9092.00157}, abstractNote={Abstract}, number={2}, journal={AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS}, author={Goodwin, BK and Piggott, NE}, year={2001}, month={May}, pages={302–317} }
 @article{alston_chalfant_piggott_2000, title={The incidence of the costs and benefits of generic advertising}, volume={82}, ISSN={["0002-9092"]}, DOI={10.1111/0002-9092.00058}, abstractNote={Generic advertising is important and controversial. In 1990, commodity organizations in the United States spent over $300 million on advertising (Lenz, Forker, and Hurst). The controversy over generic advertising is reflected in recent court cases, such as the 1996 Wileman case heard before the U.S. Supreme Court. Controversy over generic advertising also exists within the agricultural economics profession. A wide range of results can be found in past studies, partly because of different data sets and commodities, but also because of particular modeling choices. In this paper, we discuss some issues in studies of the demand}, number={3}, journal={AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS}, author={Alston, JM and Chalfant, JA and Piggott, NE}, year={2000}, month={Aug}, pages={665–671} }