Weed Science

Ongoing and Completed Projects

Ongoing

Common chickweed (Stellaria media) germination ecology, ALS herbicide resistance status, and yield losses cause to small grain crop yield losses in common chickweed

Potential of soil- and plant-applied adjuvants on efficacy of pre- and post-emergence herbicides

Development of teaching modules to support California’s specialty crops industry (CDFA Specialty Crops Block Grant)

Completed

Biology, ecology, genetics, and management of Central Valley populations of common waterhemp (Amaranthus tuberculatus) (CSU-ARI grant in collaboration with Dept. of Biology, Fresno State)

Using evolutionary genomics to probe agricultural invasiveness and adaptive evolution in Amaranthus palmeri (USDA-AFRI Grant in collaboration with University of Illinois, Urbana-Champaign and Dept. of Biology, Fresno State)

Rolled cover cropping systems (CIG Grant with multiple Universities)

Irrigation and tillage effects on agronomic and vegetable cropping systems (In collaboration with PI Dr. J. Mitchell, UC Davis)

Cover cropping impacts on vineyard water demands and weed population dynamics (University of California Sustainable Agriculture Research & Education Grant)

Automatic rate control spray application system (John Deere Inc. Grant)

Effect of residual herbicides on sub-surface drip irrigated tomatoes (In collaboration with PI Mr. K. Hembree, Univ. of California Cooperative Extension, Fresno)

Expanding the capacity and training of a new generation of California vegetable producers (co-PI). CDFA-Specialty Crops Grant. (2016-2019).

Promoting undergraduate research in agriculture: opportunities for experiential learning and a pathway to graduate studies (USDA-NIFA-NLGCA Grant)

Effect of shade and soil moisture level on the efficacy of selected postemergence herbicides in control of junglerice (Echinochloa colona) (CSU-ARI Grant).

Effect of temperature on control of glyphosate-resistant populations of junglerice (Echinochloa colona) populations (CSU ARI Research Grant).

Mechanisms, distribution and invasion potential of glyphosate-resistant junglerice and other summer grass weeds in California tree and vine cropping systems (In collaboration with PI Dr. B. Hanson, UC Davis, CDFA Specialty Crops Block Grant)

Efficacy of automated thinners on lettuce and weeds (In collaboration with PI Mr. R. Smith, Univ. of California Cooperative Extension, Monterey)

Sorghum as a dedicated low water and reduced input forage and biomass feedstock crop for California (In collaboration with PI Dr. J. Dahlberg, UC KARE, UC ANR Grant)

Evaluation of San Joaquin Valley Palmer Amaranth populations for glyphosate tolerance at various growth stages (In collaboration with Mr. S. Wright, Univ. of California Cooperative Extension, Tulare)

Evaluation of saflufenacil on glyphosate-resistant and glyphosate-paraquat resistant hairy fleabane (Conyza bonariensis) (CSU ARI Research Grant)

Crop yield and economics of San Joaquin Valley organic vineyards under alternative weed management strategies (CSU ARI Research Grant)