Holden Research & Consulting specializes in applied science and answers for production agriculture. An expert in field development research, David Holden, PCA, provides support and market expansion research, along with consulting regarding basic agronomic practices for production agriculture in California.
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    Welcome to Holden Research and Consulting! Holden Research and Consulting is owned and operated by David Holden. David has over 35 years of experience as an agronomist and Pest Control Advisor (PCA) and has worked with over 100 crops. He conducts many field research projects every year for a variety of agricultural manufacturers, and has completed over 1000 of these projects to date. He also consults extensively with growers on pest and nutrient management issues to increase their production yields. David is an experienced public speaker, has served on several ag related boards, worked with numerous commissions, and has traveled throughout the country and abroad to present his research.

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I have referred a number of people to David when they have promoted new or untried materials for improving yields, plant vigor, or disease resistance. We rely on his scientific approach to evaluating their efficacy. He has been a trusted advisor to us for many years in our fertility and pest control programs. We can always depend on an honest evaluation and recommendation.  David offers the scientific side to the farming equation, much of which relies on subjective judgment. He has respect for both the organic and conventional approach to farming. I have never felt that he was selling a product, but simply offering sound advice.

Craig Underwood
Underwood Ranches