Cow Talks

Join Marcelo Wallau as he wraps up an incredible year for Cow Talks, thanking listeners and guests alike for the best season yet. Tune in for insights and a look ahead to more engaging content in the new year.

In this episode, Marcelo Wallau, Chris Prevatt, and Hannah Baker reflect on 2025 as a pivotal year for the beef cattle industry. They look back on how market trends, rising production costs, shifting consumer demand, and pressures from imports shaped the year, while examining the consequences of historically low cattle inventories. The discussion also revisits the challenges posed by screwworm and...

Join us in this episode from our sister podcast, Forage Nexus, where we delve into the world of grasslands and their pivotal role in sustainable agriculture. We bring in Dr. Lynn Sollenberger, a renowned expert in forage systems. Hosted by Marcelo Wallau, Lilian Silva, and Bruno Pedreira, this episode features insights about the vast scale of grasslands, their impact on ecosystems, and the unique...

In this episode of  Our Research in Perspective , host Marcelo Wallau speaks with Renan Pedro Becker, a Master's degree student at the University of Florida. Renan is working with new tetraploid (Argentine-type) bahiagrass materials. This conversation focuses on management strategies to increase seed production. Becker explains how short mowing height in late spring, at the beginning of the re...

In this episode of Research in Perspective, host Marcelo Wallau speaks with Dr. Nicolas Caram, a recent PhD graduate from our Agronomy Department. The conversation is about the balance of legumes and grasses in pasture systems. They delve into the productive, environmental and economic impacts of legume integration, exploring how different proportions of legumes in pasture can affect animal perfor...

In this episode of Cow Talks, Dr. Marcelo Wallau speaks with Jim Malooley, director for Agrivoltaic Operations at Silicon Ranch, and Bill Johnson, 7th generation farmer, now at Silicon Ranch. This interview was part of the 4th Small Ruminant Short Course hosted at the University of Florida in 2025, and was recorded live during that event. Dr. Wallau and his guests explore the concepts of agrivolta...

In this episode of  Cow Talks , host Marcelo Wallau speaks with entomologists Dr. Norman Leppla and graduate researcher William Piwowarek about the reemergence of mole crickets in Florida’s pastures. The conversation digs into the pest’s South American origins, the history of insecticide and biological control efforts, and how sustainable management practices can prevent infestations. Wilhelm shar...

In this first episode of  Our   Research in Perspective,  Dr.   Marcelo Wallau speaks with Dr. Hannah Rush —agronomist and agroecologist researcher in sustainable cropping with the University of Minnesota— to discuss her research on sustainable cropping practices. Their conversation explores strategies for establishing cool-season forages, the value of species diversity in forage systems, and prac...

In this episode of Cow Talks, Dr. Marcelo Wallau brings Marshall Sewell, founder of Mind your Melon, an organization dedicated to addressing mental health stigmas in agriculture. Together, they explore the unique stressors faced by farmers that stem from generational and current economic pressures. Marshall shares his personal story of loss and the founding of the Mind Your Melon Foundation, which...

In this episode of Cow Talks, host Dr. Marcelo Wallau and Dr. Shelby Gruss discuss nitrate toxicity and prussic acid poisoning in livestock, particularly in relation to forage production. They explore the causes and management strategies for these two distinct problems. The conversation highlights the significance of educating producers about these issues to ensure the safety and health of livesto...

In this episode of Cow Talks, Dr. Brett Bultmeier, director of the University of Florida / IFAS Pesticide Information Office, discusses significant changes in pesticide licensing, and some new regulations that are coming up. The discussion explores the transition to new testing procedures, the implications of new labeling requirements, and the expected impact on farmers. The conversation also high...

In this episode of Cow Talks, Marcelo Wallau and David Zierden discuss the recent weather patterns in Florida and the impact it may have on farmers, focusing on the summer's unusual dryness and the impact of La Niña on upcoming winter conditions. They explore the implications of hurricane activity and the importance of planning ahead for farmers during this fall season 2025. For more informati...

In this conversation, we revisited two old episodes from Forage Nexus, our sister podcast with Drs. Lilian Silva, from Clemson University, and Bruno Pedreira, from the University of Tennessee. We invited two distinguished colleagues, Drs. Jim Muir and Jamie Foster discuss the importance of legumes in forage and livestock production systems. We explored ways to increase forage productivity and resi...

In this episode of Cow Talks, Dr. Marcelo Wallau hosts his colleagues Dr. Diwakar Vyas and Dr. Adesogan Adegbola (Gbola), to discuss the recent XX International Silage Conference held at the University of Florida in July 2025. The conference brought 330 researchers and allied industry from  37 different countries, representing 141 organizations, institutions and companies. . They explore the origi...

This conversation takes listeners back to 2021 with expert Dr. Cheryl Mackowiak, who delves into the intricacies of fertilization strategies in livestock management, focusing on both cool and warm season pastures. The discussion highlights the importance of nitrogen management, the role of legumes in enhancing soil fertility, and the challenges faced in seed production, particularly with Bahia gra...

In this episode of Cow Talks, Dr. Marcelo Wallau discusses the intricacies of cool season variety trials with Henry Jordan and Maria Elena Mailhos. They delve into the importance of variety trials in forage production with a specific focus on the impact of cool seasons on crop yield across the southeast, specifically, in Florida and Alabama. The conversation also covers seeding rates, seed availab...

Join us on Cow Talks as we delve into the pressing issue of New World Screwworms with Dr. Diane Kitchen, a veterinary manager with FDACS and state epidemiologist. As a continuation of our conversation with Drs. Andrew Short and Edwin Burgess, we discuss the history, current threats, and the critical importance of surveillance and reporting in preventing the spread of this potentially devastating p...

In this episode of  Cow Talks , Steve Smith, Chief of Field Services at Florida’s Office of Agricultural Water Policy, joins host Marcelo Wallau to unpack the role of Best Management Practices (BMPs) in sustainable farming. They discuss how BMPs support both environmental protection and agricultural efficiency, the benefits of enrolling in the program, and how Florida producers can access cost-sha...

Screwworms were things of past nightmare for livestock and wildlife in US. Are they coming back? In recent months, this old threat has reemerged in previously eradicated areas in Central America, making its way to Mexico and getting closer to US borders ( https://www.aphis.usda.gov/livestock-poultry-disease/cattle/ticks/screwworm/outbreak-central-america ). While not here yet, many people are in h...

This presentation with Dr. Monte Rouquette as part of the 75th Beef Cattle Short Course delves into the intricacies of forage research and its critical role in sustainable pasture management and livestock production. He discusses various aspects of forage science including, nutrient cycling, and the importance of genetics in livestock performance. The necessity for team collaboration is discussed,...

This conversation explores the evolution and advancements in forage research, particularly in Florida, highlighting successful long-term projects and effective grazing management practices. Dr. Lynn Sollenberger shares insights from his extensive experience in the field, emphasizing the importance of collaboration, research, and sustainable practices in enhancing livestock nutrition and forage pro...

In this episode, we take a closer look at the health challenges facing farmed white-tailed deer in Florida, focusing on how to manage and prevent diseases like epizootic hemorrhagic disease (EHD) and bluetongue virus. Dr. Campos shares insights into new rapid field diagnostics that can speed up outbreak response and explains how land use and environmental shifts are shaping disease risks.    The C...

In this episode of Cow Talks, Dr. John Lednicky discusses the One Health approach, emphasizing the interconnectedness of human, animal, and environmental health. He shares success stories from research on deer and viral diseases, highlighting the importance of incorporating interconnectedness in understanding emerging viruses. The conversation also covers the role of citizen science in monitoring...

In this episode of Cow Talks, Dr. João Vendramini discusses the unique forage systems and beef cattle production in South Florida. He highlights the challenges posed by the region's soil and climate, the importance of rangelands for environmental conservation, and the various types of forages used in beef production. The conversation also covers alternative forages, the role of legumes, and th...

In this episode of Cow Talks, Drs. Marcelo Wallau and Kim Mullenix from Auburn University discuss the integration of cattle into cropping systems. By exploring the opportunities and challenges presented by ICLS, they emphasize the importance of relationships. Whether this is regarding relationships between farmers or systems, the benefits of stocker cattle management and replacement heifers is dis...