标题：The Impact of Integrated Pest Management Practices on U.S. National Nursery Industry Annul Sales Revenue: An Application of Smooth Transition Spatial Autoregressive Models
摘要：The relationship between U.S. nursery industry sales and seven major Integrated Pest Management (IPM) practices was investigated using smooth transition spatial autoregressive models. Controlling for selected production, management, and marketing practices, the results showed that the differential effects of IPM practices on annual sales vary across geography, which has useful implications for industry practitioners.
关键词：nursery industry;integrated pest management;spatial autoregressive model
