Intermountain Research and Extension Center
Intermountain Research and Extension Center
Intermountain Research and Extension Center
University of California
Intermountain Research and Extension Center

Alfalfa Projects

340-Alfalfa Variety Evaluation in Mountain Valleys of Northern California

Principal Investigator: Dan Putnam, Extension Agronomist, Dept. of Plant Science, UC Davis; Craig Giannini, UC SRA, UC Davis

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  • Evaluate certified cultivar differences in alfalfa forage yield, quality, and persistence, and to communicate these results to clientele
  • Develop and provide forage yield and performance data on alfalfa experimental germplasm to public and private alfalfa scientists

360-Resiliance of Alfalfa Cultivars to Variable Environments

Principal Investigator: Charles Brummer, Director, Plant Breeding Center, UC Davis.

  1. The main goal of this project is to develop methods to measure and understand the resilience of alfalfa cultivars to abiotic stresses, to: a) identify cultivars with superior resilience, b) identify alfalfa plant
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    traits associated with resilience, and c) study the relationship between productivity and resilience in alfalfa cultivars. To achieve these goals, a combined approach of a) long-term datasets analyses, b) field experiments and c) crop modeling will be used. Therefore, the project has the following objectives:

In California, we will conduct field experiments for Objective 2:

  1. To empirically measure resilience of alfalfa cultivars to water and cold stresses in controlled replicated field experiments across the USA, and identify plant traits associated with resilience.

386-Evaluation of New Herbicide for Between Cutting Weed Control in Alfalfa

Principal Investigator: Thom Getts, UCCE-Lassen.

  • Evaluate the crop safety of various herbicides applied to alfalfa between
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    cuttings, including multiple rates of herbicide CNV2243.
  • Evaluate weed control efficacy of various herbicides applied to alfalfa between cuttings, including multiple rates of herbicide CNV2243.

387-A RR Alfalfa Injury

Principal Investigator: Tom Getts, UCCE-Lassen.

  • Is pseudomonas syringae responsible for alfalfa injury?
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  • What agronomic factors can reduce the risk of this injury?

387-B RR Alfalfa Injury - What's Happening?

Principal Investigator: Rob Wilson, Center Director/Farm Advisor, IREC.

  • Collaborate with Debby Samac with USDA-ARS to analyze alfalfa samples from several study sites to determine levels of syringae
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    bacteria in alfalfa samples after frost events and following glyphosate applications at different application timings to relate how glyphosate affects P. syringae levels at different growth stages.
  • Better document the injury and yield reductions associated with glyphosate at different growth stages to determine Roundup application times that cause the most and least crop injury.
  • Determine if suppressing P. syringae populations on alfalfa plant tissue with copper bactericides and mancozeb influence crop injury following glyphosate applications and frost.

397-Alfalfa Germplasm Evaluation-Fall Dormancy

Principal Investigator: Charles Brummer, Director, Plant Breeding Center, UC Davis; Dan Putnam, Extension Agronomist, Department of Plant Science, UC Davis.

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  • To develop a measurement method to assess dormancy in swards.
  • To evaluate fall dormancy of the standard check cultivars and selected other modern cultivars in both swards using the new protocol and in spaced plants using the current protocol.
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