Imperfect Competition in Multiproduct Food Industries with Application to Pear Processing
提出一种方法，同时检验农产品加工企业在原料市场和多个加工产品市场上的市场力量，并应用于加州梨加工行业，发现该行业在原料市场和罐头梨、水果鸡尾酒市场均行使了市场力量。
Abstract Agricultural product markets often involve relatively few firms processing a farm product into multiple processed products. This market structure prompts concern that processing firms may exercise both oligopsony and oligopoly power. The present paper develops and applies a methodology to test simultaneously for market power in both the raw input market and multiple processed output markets. Application of the methodology to California pear processing indicates the industry has exerted power in both its farm input market and the markets for canned pears and fruit cocktail.