- Author: Michelle M Leinfelder-Miles
This was a non-replicated evaluation; therefore, no statistical analysis is presented (Table 1). Stand counts were made approximately two weeks after planting on April 9th. The stand was assessed as the number of plants per two-foot length. Twelve replicate counts were averaged. In early May, we observed that Sutter and advanced lines 102, 104, and 110 had slightly earlier flowering than UC 27 and advanced lines 94, 95, and 96 (Fig. 1). We are interested in knowing whether the advanced lines have tolerance to Fusarium wilt and Ascochyta blight, but no diseases were observed at this location.
We harvested on July 25th. The plots in their entirety were combined and weighed. At harvest, the grower observed that lines 104 and 110 had an upright growth habit that made them easier to harvest. We measured harvest moisture on three subsamples, which were averaged for the summary table below, and we evaluated 100-seed weight as a measure of seed size, averaging five subsamples. In previous evaluations of these advanced lines at UC Davis, they have had higher yield and larger seed size than the industry standard varieties, and that held true at the San Joaquin County site this year.
We would like to thank the cooperating grower and bean warehouse; the CA Crop Improvement Association for funding regional trials; and the CA Dry Bean Advisory Board for assistance with statewide research prioritization and assistance with outreach.
- Author: Michelle Leinfelder-Miles
UC Davis and UC Cooperative Extension will host the UC Dry Bean Field Day on Tuesday, August 15, 2023 from 9:30am to 11:30am. The field day will begin along Bee Biology Road on the UC Davis campus. The agenda is pasted below, and a downloadable version is attached to the bottom of this post. DPR (1.0) and CCA (1.0 Crop Management, 1.0 Pest Management) continuing education credits have been approved. Thanks for your interest, and we hope to see you at the field day!
Agenda:
9:30am Welcome and introductions: Christine Diepenbrock and Antonia Palkovic, UC Davis; Michelle Leinfelder-Miles, UC Cooperative Extension
9:35am How can we further improve lima bean? A project funded by the USDA to improve breeding resources: Paul Gepts, UC Davis
9:50am Walk through and discussion of lima breeding material: Antonia Palkovic and Christine Diepenbrock, UC Davis
10:00am Field diagnostics – bean pest identification and management: Sarah Light, Michelle Leinfelder-Miles, Nick Clark, UC Cooperative Extension
10:30am Travel to Veg Crops location (38.534222, -121.782222)
10:35am Blackeye varietal improvement - update on new pest-resistant varieties: Bao-Lam Huynh, UC Riverside
10:55am Results from round one of “speed breeding”, and testing nutritional alongside agronomic traits in limas: Christine Diepenbrock, UC Davis
11:00am From farm to (robot) stomach: what are the trait profiles of California beans after harvest?: Tayah Bolt, UC Davis
11:05am Screening for drought resilience in common and tepary beans: Matthew Gilbert, Tom Buckley, Troy Magney, Paul Gepts, Chris Wong, Antonia Palkovic, Travis Parker, UC Davis
11:20am Evaluating productivity and quality of cowpea and interspecific common/tepary bean in Davis and Parlier (contrasting temperatures): Sassoum Lo, Jonny Berlingeri, UC Davis
11:25am Developing low-cost phone apps/drone and rover platforms to measure agronomic traits: Earl Ranario, Heesup Yun, Vivian Vuong, UC Davis
11:30am Discussion and evaluation
2023 Dry Bean Field Day Agenda
- Author: Michelle Leinfelder-Miles
Diagnosing problems in the field is never an easy task, but it is one of the most interesting aspects of my job because I usually never encounter the same set of circumstances twice. This summer, I have been called out on a few interesting diagnostics calls, and I wanted to share some observations.
I visited a blackeye bean field that was planted at the end of June. Since June was unusually cool this year, the grower's planting was delayed. Blackeyes shouldn't be planted until the soil temperature reaches at least 65 degrees F, and the cool spring conditions kept the soil cool. About six days after planting, the beans were only sporadically emerged. The plants that had emerged looked healthy, but the overall stand was poor. The grower said that soil moisture was good at the time of planting. I scratched down and found the seed about three inches deep, which is perhaps a little bit deep for blackeyes. Seed had germinated, and the germinated seed looked healthy with no apparent seedling diseases. Seedling diseases include Pythium and Rhizoctonia. Pythium symptoms appear as water-soaked lesions, and the hypocotyl eventually ‘dampens off'. Rhizoctonia symptoms appear as reddish-brown lesions that can girdle the stem. We felt better that it didn't appear to be a disease problem. I reached out to my farm advisor colleague, Rachael Long, to get her take on the situation, and she agreed that this was likely delayed emergence due to cool soil and a deeper planting depth. In the end, we decided to test our patience, wait a few more days, and see what would happen. After another five days, the grower let me know that the plants had emerged, and the stand looked good!
The UCCE network has a breadth of experience to help identify problems and provide potential management solutions. Please don't hesitate to contact me if you'd like help with diagnosing problems in the field.
- Author: Michelle Leinfelder-Miles
UC Davis and UC Cooperative Extension will host the UC Dry Bean Field Day on Tuesday, August 15, 2023 from 9:30am to 11:30am. The field day will begin along Bee Biology Road on the UC Davis campus. The agenda is pasted below, and a downloadable version is attached to the bottom of this post. DPR continuing education (1.0) is pending. CCA continuing education credits have been approved (1.0 Crop Management, 1.0 Pest Management). Thanks for your interest, and we hope to see you at the field day!
Agenda:
9:30am Welcome and introductions: Christine Diepenbrock and Antonia Palkovic, UC Davis; Michelle Leinfelder-Miles, UC Cooperative Extension
9:35am How can we further improve lima bean? A project funded by the USDA to improve breeding resources: Paul Gepts, UC Davis
9:50am Walk through and discussion of lima breeding material: Antonia Palkovic and Christine Diepenbrock, UC Davis
10:00am Field diagnostics – bean pest identification and management: Sarah Light, Michelle Leinfelder-Miles, Nick Clark, UC Cooperative Extension
10:30am Travel to Veg Crops location (38.534222, -121.782222)
10:35am Blackeye varietal improvement - update on new pest-resistant varieties: Bao-Lam Huynh, UC Riverside
10:55am Results from round one of “speed breeding”, and testing nutritional alongside agronomic traits in limas: Christine Diepenbrock, UC Davis
11:00am From farm to (robot) stomach: what are the trait profiles of California beans after harvest?: Tayah Bolt, UC Davis
11:05am Screening for drought resilience in common and tepary beans: Matthew Gilbert, Tom Buckley, Troy Magney, Paul Gepts, Chris Wong, Antonia Palkovic, Travis Parker, UC Davis
11:20am Evaluating productivity and quality of cowpea and interspecific common/tepary bean in Davis and Parlier (contrasting temperatures): Sassoum Lo, Jonny Berlingeri, UC Davis
11:25am Developing low-cost phone apps/drone and rover platforms to measure agronomic traits: Earl Ranario, Heesup Yun, Vivian Vuong, UC Davis
11:30am Discussion and evaluation
Dry Bean Field Day Agenda
- Author: Michelle Leinfelder-Miles
UC Davis and UC Cooperative Extension will host the UC Dry Bean Field Day on Thursday, September 1, 2022 from 9:00am to 11:00am. The field day will begin at the Campbell Tract on the UC Davis campus, which is a different location from where it has been in recent years. The agenda is pasted below, and a downloadable version is attached to the bottom of this post. CCA continuing education credits have been requested (2.0 units of Crop Management). Thanks for your interest, and we hope to see you at the field day!
Agenda:
Attendees are invited to venture into the fields to look at the lima breeding materials, cooperative dry bean nursery, and heirloom-like dry beans at the student farm (38.541667, -121.767111), with Travis Parker, UC Davis
UC Dry Bean Field Day Agenda