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Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Please note that all times are shown in the time zone of the conference. The current conference time is: 24th Aug 2026, 01:48:14am WEST

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Daily Overview

Session

Egg-Timer: Agriculture, Forests and Land Use Change
Location: D-111
Session Chair: Aaron Smith, UC Berkeley

Presentation 2

Continuous adoption of cover crops in the US Midwest: Survival analysis with a duration model

Na Zhang

Shenzhen MSU-BIT University, China, People's Republic of

This paper examines the temporal dynamics of farmer decision-making regarding cover crops with a focus on continuous adoption behavior and the factors associated with adoption duration. Using newly developed satellite-based data, I track field-level cover crop adoption for a stratified random sample of corn producers in Iowa, Illinois, and Indiana from 2011 to 2021. Based on annual adoption patterns, farmers or field parcels are categorized as always adopters, intermittent adopters, or never adopters. Focusing on adopters or parcels planted with cover crops, I define an

“adoption spell” as a sequence of consecutive years during which cover crops are continuously adopted by a farmer or on a field parcel. The duration analysis reveals that time-varying factors, including planted acreage, the share of owner-operated land, pre-planting mean temperature, and conservation payments, are significantly associated with the length of adoption spells. In addition, farmer characteristics such as education and age, and field characteristics such as soil clay content, are also significant factors associated with adoption duration. These findings shed light on the

adoption dynamics and the determinants of adoption duration, which are relevant for designing agri-environmental policies that promote sustained adoption and for modeling the long-term environmental and economic benefits of cover cropping.