AGRONOMY HUB

Tools and resources for functional sustainability.


Steve Koike

Featured Article
How To Distinguish Weather-Related Crop Injury From Disease

There has been outrageous weather in parts of our nation this year. “Bomb cyclones” were dropping hsnow and unleashing winds. Historically huge snowstorms paralyzed all transportation and interfered with daily tasks. Cold-paralyzed iguanas were falling from trees in Florida!

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ARTICLES

Honoring Steve Koike
Honoring Steve Koike

As Steve Koike enters retirement, we’re honored to spotlight his lasting impact on plant pathology. The TriCal blog highlights Steve’s decades of leadership, service, and contributions to the agricultural community, including his time with UC Cooperative Extension and TriCal Diagnostics.

1/21/2026
How To Distinguish Weather-Related Crop Injury From Disease
How To Distinguish Weather-Related Crop Injury From Disease

There has been outrageous weather in parts of our nation this year. “Bomb cyclones” were dropping hsnow and unleashing winds. Historically huge snowstorms paralyzed all transportation and interfered with daily tasks. Cold-paralyzed iguanas were falling from trees in Florida!

3/9/2026
Discovering New Vegetable Diseases Always a Work in Progress
Discovering New Vegetable Diseases Always a Work in Progress

“New” is not a word you want to see associated with “vegetable disease concerns.” Growers, production advisors, and field professionals are periodically faced with new and unfamiliar diseases. Researchers have an established protocol for proving that a problem is a new one.

11/3/2025
More Effective Disease Control in Your Vegetables via Crop Rotations
More Effective Disease Control in Your Vegetables via Crop Rotations

Plant diseases are one of the most challenging obstacles facing growers. A biological reality is that if a farmer grows the same crop too many times, and if the farmer puts in the same crop too often over a short period of time, pathogens will be harder to manage.

3/7/2025
Unexpected Vegetable Disease Issues Can Lead to Unusual Findings
Unexpected Vegetable Disease Issues Can Lead to Unusual Findings

Yet another novel medical development is threatening people in some regions of the U.S. This concern is a Neisseria bacterium that is responsible for meningitis and bloodstream diseases. The “new” is a particular Neisseria strain that causes unusual, atypical symptoms.

11/6/2024
Criteria for Successful Biocontrol Candidates on the Farm
Criteria for Successful Biocontrol Candidates on the Farm

Using biological agents to help manage plant diseases is no longer a novel concept. Research on biological candidates, development of biological products, and deployment of such materials in agriculture have been occurring for a long time.

3/7/2024