JOURNAL OF

Agricultural andResource Economics

Volume 36 C Number 1 C April 2011

Food Stamp Program Participation and Childhood Obesity . . . . . . . . . . . . . . . . . . C. A. Robinson andX. Zheng

Impacts of Rising Food Prices in Vietnam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L. Vu and P. Glewwe

Live and Feeder Cattle Options Performance . . . . . . . . . . . . . . . . . . . . . . . . L. Brittain, P. Garcia, andS. H. Irwin

Electronic vs. Open-Outcry Trading of KCBT Wheat Futures . . . . . . . . . . . . . . . . . . . . . . S. Shah andB. W. Brorsen

Are Agricultural Options Overpriced? . . . . . . . . . . . . . . . . . . . . . . . . . . . . H. A. Urcola and S. H. Irwin

Do Consumers Benefit from New Brand Introductions? . . . . . . . . . . . . . . . . . C. Arnade, M. Gopinath,and D. Pick

Economics of Commonly Owned Groundwater . . . . . . . . . . . . . . . . . . . . . . . . . C. Wang and E. Segarra

Carbon Sequestration in Agricultural Soils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E. A. Wilman

Impacts of Machinery Sharing on Cash Flows of Agribusinesses . . . . . . . . J. L. Wolfley, J. W. Mjelde,D. A. Klinefelter, and V. Salin

Tax-Deferred Retirement Savings of Farm Households . . . . . . . . . . . . A. K. Mishra and H.-H. Chang

Crop Yield Expectations with Beta Distribution Limit . . . . . . . . . . . . . . . . . . . . . . . . . D. A. Hennessy

Dynamic Yield Distributions Under Technological Change . . . . . . . . . . . . . . . Y. Zhu, B. K. Goodwin,and S. K. Ghosh

Actuarial Impacts of Loss Cost Ratio Ratemaking . . . . . . . . . . . . . . . . . J. D. Woodard, B. J. Sherrick,and G. D. Schnitkey

The Journal of the Western Agricultural Economics Association

EDITORGary W. Brester, Montana State University

Co-editorsJoseph A. Atwood, Vincent H. Smith, and Myles J. Watts

Montana State University

EDITORIAL COUNCIL(2010S2012)

Oral Capps, Jr.Texas A&M Univ.

Catherine KlingIowa State Univ.

Mary K. MuthRTI International

Ted C. SchroederKansas State Univ.

Colin A. CarterUniv. of Calif., Davis

Jeffrey T. LaFranceWashington State Univ.

Philip G. PardeyUniv. of Minnesota

J. Scott ShonkwilerUniv. of Nevada, Reno

Dillon M. FeuzUtah State Univ.

David K. LambertKansas State Univ.

Paul M. PattersonArizona State Univ.

James VercammenUniv. of Brit. Columbia

Joseph W. GlauberU.S. Dept. of Agriculture

Jayson L. LuskOklahoma State Univ.

Nicholas E. PiggottNorth Carolina State Univ.

Brian D. WrightUniv. of Calif., Berkeley

Steve F. HamiltonCal Poly State Univ.

Dale J. MenkhausUniv. of Wyoming

Rulon D. PopeBrigham Young Univ.

Amalia YiannakaUniv. of Nebraska

Matthew T. HoltPurdue Univ.

Judith L. Harrison, Technical EditorBozeman, MT (WordDoctor@aol.com)

Amy L. Johnson, Editorial AssistantBozeman, MT (jare_ea@montana.edu)

The Journal of Agricultural and Resource Economics is published by the Western AgriculturalEconomics Association three times per year, in April, August, and December.

Copyright © 2011 by the Western Agricultural Economics Association.

An article, note, or other material appearing in the Journal of Agricultural and Resource Economicsmay not be republished in full or in part without permission from the editor.

Editorial Policy

The Journal of Agricultural and Resource Economics seeks to publish creative and scholarlyeconomic studies in agriculture, natural resources, and related issues. Manuscripts dealing withthe economics of food and agriculture, natural resources and the environment, human resources,and rural regions are encouraged. The Journal seeks to provide a forum for topics of interest tothose performing economic research as well as to those involved with economic policy and education.Submission of comments on articles previously published in the Journal is welcomed.

Editorial Communications

All initial submissions and accompanying editorial correspondence should be submittedelectronically at our JARE internet website. (Refer to Author Guidelines, inside back coverof this journal issue, for full information.)

PRINTED BY THE SHERIDAN PRESS, INC., HANOVER, PA

JOURNAL OF

Agricultural andResource Economics

Volume 36 C Number 1 C April 2011

Articles

Household Food Stamp Program Participation and Childhood Obesity / Christina A. Robinsonand Xiaoyong Zheng / 1

Impacts of Rising Food Prices on Poverty and Welfare in Vietnam / Linh Vu and Paul Glewwe / 14

Live and Feeder Cattle Options Markets: Returns, Risk, and Volatility Forecasting / Lee Brittain, Philip Garcia, and Scott H. Irwin / 28

Electronic vs. Open Outcry: Side-by-Side Trading of KCBT Wheat Futures / Samarth Shah and B. Wade Brorsen / 48

Are Agricultural Options Overpriced? / Hernán A. Urcola and Scott H. Irwin / 63

How Much Do Consumers Benefit from New Brand Introductions? The Case of Potato Chips / Carlos Arnade, Munisamy Gopinath, and Daniel Pick / 78

The Economics of Commonly Owned Groundwater When User Demand Is Perfectly Inelastic / Chenggang Wang and Eduardo Segarra / 95

Carbon Sequestration in Agricultural Soils / Elizabeth A. Wilman / 121

Machinery-Sharing Contractual Issues and Impacts on Cash Flows of Agribusinesses / Jared L. Wolfley,James W. Mjelde, Danny A. Klinefelter, and Victoria Salin / 139

Tax-Deferred Retirement Savings of Farm Households: An Empirical Investigation / Ashok K. Mishraand Hung-Hao Chang / 160

Modeling Stochastic Crop Yield Expectations with a Limiting Beta Distribution / David A. Hennessy / 177

Modeling Yield Risk Under Technological Change: Dynamic Yield Distributions and the U.S. Crop Insurance Program / Ying Zhu, Barry K. Goodwin, and Sujit K. Ghosh / 192

Actuarial Impacts of Loss Cost Ratio Ratemaking in U.S. Crop Insurance Programs / Joshua D. Woodard,Bruce J. Sherrick, and Gary D. Schnitkey / 211