In this paper we show that sorting different ability contestants in piece rate tournaments into more homogeneous groups alters incentives for agents to exert effort. In particular we show that for a given mean of the tournament group's ability parameters, larger variance (more heterogeneous...

This study analyzes the factors that determine the demand for milk products and the consumer benefits from organic milk introduction. Estimating a structural model, the welfare effect is decomposed into two parts: the effect of having an additional product and the effect from the price changes...

The objective of this study is to evaluate and model the risks of corn and soybean production. This study focuses on the risk of revenue variability that arises from changes in prices, yields shortfalls or both. There are several models for price and yield risk factors for corn and soybeans. For...

Replaced with revised version of paper 07/18/08.

Favorable weather and the adoption of Genetically Modified (GM) cornhybrids are often argued to be factors that explain recent corn yield increasesand risk reduction in the U.S. Corn Belt. The focus of this analysisis to determine whether favorable weather is the main factor explainingincreased...

Replaced with revised version of paper 07/29/10.

Grain prices have risen sharply since 2005 and 2006 affecting livestock markets by increasingfeed prices and leading to significant volatility shocks. The high price levels and magnitude ofsustained high volatilities has raised concerns for many sectors of the economy, in particularthose with...

The objective of this study is to evaluate and model the yield risk associatedwith major agricultural commodities in the U.S. We are particularly concernedwith the nonstationary nature of the yield distribution, which primarily arisesbecause of technological progress and changing environmental...

In the US forestry industry, wildfire has always been one of the leading causes of damage. This topic is of growing interest as wildfire has caused huge losses for landowners, residents and governments in recent years. While individual wildfire behavior is well studied (e.g. Butry 2009; Holmes...

This paper discusses the volatility spillover effects in agricultural commodity markets, via studying implied volatilities derived from nearby options contracts. Using weekly averaged data from corn and soybean markets after 2003, a vector autoregressive (VAR) model is estimated, and impulse...