Episode 3

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Published on:

19th Mar 2025

Herbicide Carryover With Ian Burke, Ph.D.

Dr. Ian Burke is a weed scientist at Washington State University. His work focuses on weed biology and ecology, and he does a lot of work with herbicides. Dr. Burke discusses his research evaluating herbicides for use in peas, lentils and chickpeas and how to manage herbicide carry over issues that can impact these crops. This is the deep dive into herbicide carry over that you might not have even realized you needed.

“ We have not enough moisture during the summer to break down the herbicides and not enough heat units during the winter to break down the herbicides. So we really have sort of a perfect storm, a very unique situation, in the United States where herbicides applied in our important rotational crop like wheat persists for far longer than than anywhere else.”  - Ian Burke, Ph.D.

This Week on Growing Pulse Crops:

  • Meet Ian Burke, Ph.D. and learn about cropping systems in his area of the Pacific Northwest
  • Understand herbicide carryover and the factors that causes herbicide persistence like the characteristics of the products themselves, environmental conditions, and soil properties
  • Discover how farmers can manage herbicide carryover while still maintaining the efficacy of their herbicide program. 


Growing Pulse Crops is produced by Dr. Audrey Kalil and hosted by Tim Hammerich of the Future of Agriculture Podcast. 


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About the Podcast

Growing Pulse Crops
The science and business of farming field peas, chickpeas, and lentils
This show features the latest in research, agronomy, and economics of pulse crops (peas, chickpeas, lentils, etc.).

Demand for these nutrient-dense, high-protein foods continues to grow. There is also interest from farmers to include more pulses into diverse rotations for benefits like nitrogen fixation and soil health.

But the industry continues to face challenges, and we are eager to address these head on. So if you’re a pulse grower or in any way interested in these important crops, hit subscribe and stay tuned for future episodes. We’ll be back with plenty of information about challenges pulse farmers are facing throughout the U.S. and what solutions are working.

Brought to you by the Pulse Crops Working Group with support from the North Central IPM Center and USDA NIFA.

About your host

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Tim Hammerich

I share stories about agriculture, agtech, and agribusiness on podcasts and radio.