Jeffrey P. Mitchell Ph.D.
9240 S. Riverbend Ave.
Parlier, CA 93648
Weed Science Program
Ph.D., University of California, Davis, 1995
My current research and extension program focuses on soil and water management in vegetable production systems throughout California, impacts of preharvest vegetable management practices on postharvest product quality and extension methodology.
A major component of my research and extension effort involves leading an interdisciplinary team consisting of UC Farm and IPM Advisors, campus-based researchers, and 12 farmers in the San Joaquin Valley's West Side region that is currently conducting on-farm demonstrations and evaluations of biologically integrated farming practices in the annual cropping systems of this region. The objectives of this work are 1) to facilitate information exchange among participating farmers, consultants and researchers on soil building practices and options for reduced reliance on agrichemical inputs, 2) to monitor and evaluate on-farm demonstrations of soil building practices, including cover cropping and organic soil amendment inputs, 3) to determine the extent to which IPM practices are utilized in row crops on the West Side and identify constraints preventing further adoption of biologically intensive pest management practices and 4) to provide community based demonstrations of existing technologies to overcome constraints while making use of participatory research teams to develop and refine additional information.
An important research component of this on-farm demonstration project involves the evaluation of surface organic mulches in no-till vegetable production systems. I am currently conducting a wide-ranging program in this area to evaluate the effectiveness of these practices for: suppressing weeds, improving production efficiencies in terms of nutrient inputs and irrigation water, and for providing optimal soil temperature regimes for crop growth.
SpecialtyVegetable cropping systems, irrigation management, soil quality, organic soil amendments, extension models, postharvest physiology
Areas of Expertise (click to see all ANR academics with this expertise)
- Corn, Field
- Sorghum, Grain
- Plants and Their Systems
- Plant Management Systems
- Natural Resources and Environment
- Conservation and Efficient Use of Water
- Appraisal of Soil Resources
- Agricultural, Natural Resource and Biological Engineering
- Drainage and Irrigation Systems and Facilities
- Economics, Markets, and Policy
- Economics of Agricultural Production and Farm Management
California Agriculture Article Contributions
- Conservation tillage systems for cotton advance in the San Joaquin Valley
- No-tillage and high-residue practices reduce soil water evaporation
- Sudex cover crops can kill and stunt subsequent tomato, lettuce and broccoli transplants through allelopathy
- Transition to conservation tillage evaluated in San Joaquin Valley cotton and tomato rotations
- Conservation tillage and cover cropping influence soil properties in San Joaquin Valley cotton-tomato crop
- Conservation tillage production systems compared in San Joaquin Valley cotton
- Soil properties change in no-till tomato production
- Organic matter recycling varies with crops grown
ANR Workgroup Associations
- Conservation Tillage - Chair
- Bioenergy - Member
- Climate Change Adaptation - Member
- Cotton - Member
- Small Grain - Member
- Vegetable Crops - Member
- Warm Season Vegetables - Member
- Waste Management and Compost - Member