Agronomy Research & Information Center
Agronomy Research & Information Center
Agronomy Research & Information Center
University of California
Agronomy Research & Information Center

Agronomy Blog

  • CA Dry Bean Advisory Board Request for Research Proposals - 2021

    The California Dry Bean Advisory Board is requesting applied research proposals for 2021. This commodity-based research request is sponsored by the California Dry Bean Marketing Order, under the guidance of CDFA (CA Dept Food & Ag). The Board has supported applied research by...

  • Managing root-knot nematodes in crop rotations

    Root-knot nematodes causing galling on tomato roots.

    A question came up about managing root-knot nematodes in processing tomato and lima bean rotations.  Root-knot nematodes are tiny worm-like soil dwelling pests that cause root galling on plant roots, resulting in significant yield and quality losses. Symptoms of severe root-knot infestations...

  • Why Aren't My Crops Drying Down?


    We cut our blackeye bean (cowpea) research plots at UC Davis almost 3 weeks ago and they're still too green to harvest. If we tried now, the vines would get wrapped around the threshing cylinder.  Several growers in the Sacramento Valley have mentioned that their corn has sat at the same...

  • Lima Bean Heat Stress

    Figure 3. Bean plant with poor pod set. The arrows indicate where flowers did not set pods. The pictured, opened pod shows no lygus stings, suggesting that heat (and not lygus) caused poor pod set at this field.

    Last week, I visited a baby lima field in the southwest part of San Joaquin County that had overall poor pod set. Pods were filling lower in the canopy, but flowers had not set higher on the plants. The field, which was planted in late-June/early-July had an excellent stand, and ostensibly, good...

  • Ground squirrel damage to garbanzo bean pods

    Garbanzo seed pods damaged by California ground squirrels.

    Have you ever wondered about this damage to garbanzo beans where there's a hole clipped in the pod and the seed is missing (see photo)? In this case, the damage is from pesky ground squirrels that were foraging in and around our garbanzo research plots at UC Davis this spring. However, other...

  • Why aren't my blackeye bean pods filling out at the tips?

    Photo. Lack of pod fill in blackeye bean tips caused by heat, which affects pollen viability and fertilization; water stress can add to this problem, especially during heatwaves. San Joaquin Valley, 2020.

    Recently, I received a call about a blackeye bean field in the San Joaquin Valley with a lot of bean pods that did not fill out at the tips (photo). I contacted the UC Riverside blackeye bean breeders Drs. Phil Roberts and Bao Lam Huynh and they shared that this problem is primarily caused by...

  • Fusarium Wilt in Garbanzos

    Figure 1. Garbanzo leaf yellowing and necrosis indicative of Fusarium wilt.

    A little over a month ago, I visited some contiguous garbanzo bean fields in southern San Joaquin County, at the request of the grower. The grower observed that plants were yellowing and dying (Fig. 1) and wondered what might be causing the problem. The grower did not figure that he would be able...

  • 2018 Field Corn Variety Trial Results

    UCCE Delta field corn variety trial.

    Table 1 shows the results of the 2018 UCCE Delta field corn variety trial, located on Tyler Island. Three replicate blocks of fourteen varieties were planted on May 9th by air planter. The fourteen varieties included 12 varieties submitted by seed companies and two submitted by the grower. All...

  • New UC IPM Guidelines for Dry Beans


    The Insect and Mite sections of the UC IPM Pest Management Guidelines for Dry Beans have been recently revised and updated and are now available online at: UC IPM Dry Beans Pest Management Guidelines. Authors include UCCE Farm Advisor Rachael Long and UC IPM...

  • Dry Bean Field Meeting, UC Davis, Thursday, August 23, 2018, 10 am- 12:30 pm

    Dry Bean Field Day, UC Davis

    UC Davis Agronomy Farm  Directions: In the field across from the UC Davis Bee Biology Lab (same place as previous years). From Hwy 113 in Davis, exit on Hutchison Dr. Go west, turn north at the first roundabout, then west at the second roundabout. Continue west on Hutchison Dr for about...

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