Tree Ratatouille: Growing Vegetables Under Timber Trees

Denis Flores and his wife are small-scale, direct market and U-pick organic vegetable and fruit farmers in southern France who have embarked on a grand experiment—growing vegetables under rows of tall timber trees. The Flores' call their experiment "arbre ratatouille”, or tree ratatouille, after the popular French mixed vegetable stew.

BIFS Workgroup Overview

The University of California - Agriculture and Natural Resources (UC ANR) provides funding and institutional support for workgroups to facilitate collaborative planning and coordination of research and extension on emerging and continuing priority issues. The Biologically Integrated Farming Systems (BIFS) Workgroup was ratified in 1999 and re-ratified in 2004 and operated until 2010.

Stakeholder Review

Thank you to all who participated in the California Nitrogen Assessment’s (CNA) Stakeholder Review process.  The California Nitrogen Assessment was designed to respond to stakeholders’ needs, and the review process was an opportunity for the CNA team to hear from you in order to understand how well the assessment meets those needs.

The stakeholder review process for the CNA has concluded. Webinars of summary findings for individual sections of the assessment, and downloadable drafts of final (pre-press) drafts, are available below.

Stakeholder Questions

Through stakeholder engagement in the CNA's early stages, stakeholders generated a large number of questions about nitrogen in California agriculture. We synthesized a large list into overarching research questions, which served as guides for how to focus the California Nitrogen Assessment.

Stakeholder list

Who We're Working With

The California Nitrogen Assessment team is committed to hearing from and working with a diverse group of stakeholders who have interests related to nitrogen application and impacts in California.

Stakeholder Advisory Committee

The California Nitrogen Assessment Team has created a Stakeholder Advisory Committee composed of representatives of stakeholders from a variety of interest groups and perspectives. These individuals review in-progress documents and provide links between the assessment and important stakeholder groups. Current committee members are listed below.

Project Outreach and Publications

Project staff engaged with California growers, farm advisors and other extension personnel, and partner organizations throughout the study. 

Project Staff

Dr. Sonja Brodt, Academic Coordinator, UC SAREP and ASI (Project Director)
Dr. Alissa Kendall, Associate Professor, UC Davis Department of Civil and Environmental Engineering
Elias Marvinney, Graduate Student Researcher, UC Davis Plant Sciences Department

Background on Methyl Bromide phase out

Methyl bromide is a broad-spectrum fumigant that is widely used to control insect, pathogen, nematode, weed and rodent pests. Approximately 90% of the methyl bromide use in California is for pre-plant soil fumigation to control soil-borne pathogens and pests principally in strawberries, nursery crops, grapes, and tree fruits and nuts. Postharvest commodity treatment accounts for about 5-10% of the methyl bromide use and is directed largely at insects of nuts, cherries, grapes, raisins, and imported materials.