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Past and present advances in the fields of agronomic, crop, soil, and environmental sciences. Enjoy interviews with researchers published in journals, books, and magazines from the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. Opinions and conclusions expressed by authors are their own and are not considered as those of the American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, its staff, its membe ...
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“Key soil properties and their relationships with crop yields as affected by soil-landscape rehabilitation” with Dr. Sharon Schneider. Soil erosion is one of the major issues in agriculture that causes loss of the topsoil layer, reducing soil health and crop productivity. There are several ways to check soil erosion and its impacts on crop and soil…
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“Recalibrating the Pennsylvania pre-sidedress soil nitrate test recommendations for modern corn production” with Charles White. Nitrogen management is one of the most important agronomic practices in modern crop production systems. The Pre-Sidedress Soil Nitrate Test, also known as the PSNT, gives farmers an estimation of plant available nitrogen i…
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“Precision nitrogen management for improving yield and protein content in wheat” with Dr. Olga Walsh. Nitrogen is one of the most important nutrients for crops, which is required in large amounts for crop production and demands precise nutrient management methods due to its highly mobile property in plants and soils and high chances of leaching. Pr…
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“Nitrogen mitigation scenarios to reduce coastal eutrophication” with Wafa and Patrick. Eutrophication is a state of overgrowth of aquatic plants, such as algae and seaweeds, in water bodies due to the excessive pouring of nutrients from different sources like agriculture, industry, and human settlements, causing disturbances to the ecosystems. Coa…
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“Focusing the GWAS Lens on days to flower using latent variable phenotypes derived from global multienvironment trials” with Sandesh Neupane and Derek Wright. Lentil, a pivotal pulse crop, is recognized as an important part of food and nutrition security in the world. It has rich sources of important nutrients, is easy to cook, and thrives well on …
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“Addressing conservation practice limitations and trade-offs for reducing phosphorus loss from agricultural fields” with Dr. Pete Kleinman, Research Leader, USDA, and Dr. Deanna Osmond, Professor, North Carolina State University. Conservation practices are important techniques that help us move towards a more sustainable planet. But when these tool…
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“Genes and genetic mechanisms contributing to fall armyworm resistance in maize” with Sandra Woolfolk and Leigh Hawkins, research entomologist and molecular biologist (respectively) at USDA-ARS. Fall armyworm is a major pest around the world, causing millions of dollars in damages yearly. However, farmers are not alone in the fight against these in…
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“Microplastics in Composts, Digestates and Food Wastes: A Review” with Kate Porterfield, PhD Candidate at University Vermont and Dr. Eric Roy, Associate Professor at University of Vermont. Diverting organic materials and food waste from landfills and recycling them for beneficial use in agriculture is a great way to reduce greenhouse gas emissions.…
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“Genotypic and environmental effects on the compounds associated with garlic flavor, health-enhancing properties, and postharvest conservation” with Dr. Pablo Cavagnaro. Garlic is a widely consumed species used for culinary as well as therapeutic and medicinal purposes. Different compounds within garlic can affect its effectiveness for these purpos…
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“Partial recovery of microbial function in restored coastal marshes of Oregon, USA” with Amelia Fitch, PhD Candidate at Dartmouth College Draining or restoring a wetland has a significant impact on the land’s ability to store carbon. A lot of that has to do with the microbial communities that live within these wetlands, but when a wetland is restor…
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“Pesticide trends in a tailwater recovery system in the Mississippi Delta” with Dr. Matt Moore, Supervisory Ecologist and Research Leader of the USDA-ARS Water Quality and Ecology Research Unit at the National Sedimentation Laboratory in Oxford, Mississippi Farmers in Mississippi have a two-fold problem. Agriculture requires a lot of water, leading…
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It’s our birthday, our five-year anniversary, and our 100th episode, which means it’s time to paaaaarty! Join us for a brief interview with host Abby as she looks back on five years of podcasting, followed by our usual birthday blooper reel. Contact us at podcast@sciencesocieties.org or on Twitter @FieldLabEarth if you have comments, questions, or …
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“Transitioning from conventional to cover crop systems with minimum tillage does not alter nutrient loading” with Drs. Joby Czarnecki and Beth Baker of Mississippi State University Cover crops are often lauded as agricultural heroes boasting of a variety of ecosystems services and benefits to farmers and the world. But are these crops always the be…
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“Comparison of methods to recover amaranth weed seeds from manure” with Drs. Anthony Brusa and Melissa Wilson, Minnesota State University Palmer Amaranth is a pesky pest that can devastate crops, and when this sneaky pest’s seeds creep into animal feed, they can find their way into unsuspecting farmers’ fields. This episode, Drs. Anthony Brusa and …
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“Global Dependence Upon Corn Belt Dent Maize Germplasm: Challenges and Opportunities” with Dr. Stephen Smith, Affiliate Professor at Iowa State University Plant breeders are constantly trying to find the best crosses to increase the traits farmers and consumers want. However, continually crossing the same varieties can decrease the genetic gene poo…
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“Controlled Freezing Studies as a Corollary Selection Method for Winterhardiness in Perennial Flax (Linum spp.)” with Neil Anderson, Professor & Interim Department Head at the Department of Horticultural Science, University of Minnesota Flax is an important crop worldwide for its many uses, but as with all plants, its global use is limited by the c…
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This time, we take a break from our regularly scheduled programming for a brief interview and sample episode from our sister podcast, Decode 6. Contact us at podcast@sciencesocieties.org or on Twitter @FieldLabEarth if you have comments, questions, or suggestions for show topics, and if you want more content like this don’t forget to subscribe. If …
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Episode Title: Humor in the Classroom with Dr. Andrés Varhola Show notes: ““His lectures were like watching a show on Netflix”: A success story of laugh tracks in prerecorded undergraduate lessons” with Dr. Andrés Varhola. When the Covid-19 pandemic hit, teachers had to rapidly adapt to new, fully online teaching environments. For Andrés, who had a…
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“Relationships between roots, the stay-green phenotype, and agronomic performance in barley and wheat grown in semi-arid conditions” with Dr. Maryse Bourgault and Jessica Williams. Roots are an important factor in drought-resistance as they are the primary way by which plants uptake the water they need to survive. However, measuring roots can be a …
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“Cost-effective, high-throughput phenotyping system for 3D reconstruction of fruit form” with Dr. Mitchell Feldmann Various research and breeding programs study phenotypical traits—or traits that can be discerned via the five senses—to evaluate the quality of their target crops. However, getting data on these traits, often via human-made measuremen…
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“How do pinching and plant density affect industrial hemp produced for cannabinoids in open field conditions?” with Dr. Josh Freeman. Industrial hemp has only recently been re-introduced in American production systems. Therefore, there’s a lot to learn about how to best produce this versatile crop in American climates. This episode of the Field, La…
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“Root Water Uptake of Biofuel Crops Revealed by Coupled Electrical Resistivity and Soil Water Content Measurements” with Dr. Alexandria Kuhl Biofuel crops can be used to create fuel from renewable plant materials. Corn is the most common example, but as research progresses, scientists are looking to expand their biofuel crop pool to include woody p…
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“Greenhouse gas mitigation strategies and opportunities for agriculture” with Dr. Hoyoung Kwon Agriculture and food systems can be strong contributors to greenhouse gas (GHG) emissions and, in turn, climate change. However, in the midst of this reality, there are also abundant opportunities to improve our systems, reduce emissions, and move towards…
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“Assessment of Kernel Characteristics to Predict Popping Performance in Grain Sorghum” with Kent Mitchell Popping sorghum is a niche alternative to popcorn, with no large hulls, a neutral flavor, and smaller kernels. While the tasty snack is growing in popularity, much remains to be learned about the practices that can produce the best popping prod…
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It’s Halloween, which means its spooky time. Throughout history, humans have battled some pretty scary pests, from aphids to spider mites, white flies and more. This episode, Vikram Baliga of the Planthropology podcast walks us through some of the scary adaptations these pests have that have made them so effective and progress we’ve made in fightin…
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“‘VT Sweet’: A vegetable soybean cultivar for commercial edamame production in the Mid-Atlantic U.S.” with Dr. Bo Zhang Edamame, or edible soybean, is a popular snack. However, due to a lack of US specific soybean varieties, domestic production hasn’t been able to keep up with consumer demand. In this episode, Bo discusses her work breeding varieti…
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The World Food Prize was established by Dr. Norman Borlaug and is the equivalent of the Nobel Prize in agriculture. This year’s winner is Dr. Cynthia Rosenzweig, whose extensive work in crop modeling, cross-disciplinary collaboration, and activism is helping to prepare the world to combat the effects of climate change. In this episode, Cynthia disc…
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“The Clean Water Act and Biosolids: A 45-Year Chronological Review of Biosolids Land Application Research in Colorado” with Dr. Jim Ippolito Biosolids are the human waste products that are managed and produced by wastewater treatment plants. While many simply flush and forget their waste, biosolids can have a variety of advantageous environmental i…
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“Proactive Approach to Minimize Lithium Pollution” with Dr. Alex Chow Lithium is a chemical element that has recently gained much attention for its use in rechargeable batteries for electric vehicles and electronics. However, with recycling and re-use programs still in their infancy, there is a growing concern about potential lithium pollution. Thi…
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“Poultry manureshed management: Opportunities and challenges for a vertically integrated industry” with Dr. Ray Bryant Poultry farms are often heavily concentrated in certain areas of the country. This can lead to excessive amounts of nutrient-rich poultry manure in manuresheds with no easy way to return it to the fields that need it. This episode,…
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“Seeding depth effects on elongation, emergence, and early development of California rice cultivars” with Dr. Alex Ceseski. In California, several compounding factors make it difficult for farmers to protect their crops from weeds and algae using traditional weed control methods. Dr. Alex Ceseski and his team and working to fix that. By exploring t…
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It’s our blooper reel! Our podcast is turning four this year. As a birthday treat, enjoy bloopers from our last orbit around the sun. Want to get us a birthday treat in return? Rate and review us on your favorite podcast app or platform. Contact us at podcast@sciencesocieties.org or on Twitter @FieldLabEarth if you have comments, questions, or sugg…
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“Redesigning traditional weed management practices in faba bean fields to optimize food-feed production in the smallholder system” with Peter Thorne. Researchers work hard to develop best practices and recommendations for farmers. However, cultural practices may affect how farmers do or are able to implement these recommendations on their farms. Th…
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There are multiple tools for farmers to work with when deciding Nitrogen recommendation rates. All of them operate on the spectrum between mechanistic and empirical approaches. In this episode of the Field, Lab, Earth podcast, Drs. Brian Arnall, Josh McGrath, and Wade Thomason discuss the key differences between these approaches, how they interact …
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“The Potential to Breed a Low-Protein Maize for Protein-Restricted Diets” with Matthew Woore, Dr. Sherry Flint-Garcia, and Dr. Jim Holland Phenylketonuria is a metabolic disorder which results in a need for a strict low-protein diet. This restricts the intake of corn and many corn-based foods. This episode, Smitty, Sherry, and Jim discuss their wor…
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In 2008, NASA launched their Phoenix Lander to take measurements on Mars. This episode, Drs. Doug Cobos and Colin Campbell talk about their experiences working with NASA and the Jet Propulsion Lab (JPL), what they were measuring, and what their data can tell us about Mars. Tune in to learn: The challenges involved in creating sensors for extraterre…
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“Urban food forests in the American Southwest” with Dr. James Allen. Food forests are multi-level polycultures where fruit and nut trees, vegetables, shade trees, mushrooms, aquatic plants, and more can all exist in the same urban or rural space. They’re known to have many benefits, both environmentally and socially; however, in more arid climates …
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“Agroforestry at the Landscape Level” with Dr. Sarah Lovell Agroforestry is where trees are grown alongside other crops or livestock. It’s an extremely flexible practice that can be adapted to both urban and rural environments and at a variety of scales. In this episode, Dr. Sarah Lovell discusses the various uses and forms of agroforestry, how agr…
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“Current understanding of subsurface transport of micro- and nanoplastics in soil” with Yingxue Yu. Microplastics can come from all kinds of sources, including broken down bottles, face and body scrubs, plastic bags, tire tracks, agricultural mulch films, sewage waste, and more. However, for as ubiquitous as these plastics can be, there’s still muc…
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Nitrogen is an important nutrient for corn which, when applied as a fertilizer, can increase yields. However, too much nitrogen can lead to negative impacts on human health, water quality, plant health, and the environment. This episode, Carrie discusses her work testing nitrogen rate recommendation tools and how we can best balance profitability, …
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“Review of cool-season turfgrasses for salt-affected roadsides in cold climates” with Dr. Eric Watkins. Salt is commonly spread on roads in colder regions to help keep them clear of dangerous ice. However, salted roads can pose some environmental risks. Roadside turfgrasses can help alleviate some of those problems, but drought, heat, salt, ice, an…
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“Greenhouse gas fluxes from turfgrass systems: Species, growth rate, clipping management, and environmental effects” with Drs. Quincy Law and Jon Trappe Greenhouse gases are naturally occurring gases that contribute to climate change. These gases, like carbon dioxide, nitrous oxide, and methane, are both absorbed and produced by turfgrasses; howeve…
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Boll weevils are an agricultural pest that feeds primarily on cotton. After their arrival in the 1890s, they caused devastation across the South-Eastern United States, starting a battle that’s raged for more than 130 years. This episode, Paul Csomo of the award-winning Varmints! podcast joins us to discuss these creatures, their adaptions, and thei…
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“Macadamia intercropping into an inefficient adult coffee plantation is economically advantageous” with Rogério Soratto. Macadamia nuts are a lucrative crop for Brazilian farmers, but long wait times from planting to production can cause financial strain when first planting them. This episode, Rogério Soratto discusses his work researching intercro…
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The Food and Agriculture Organization of the United Nations (FAO) has been fighting hunger for more than 75 years. The FAO Strategic Framework 2021-2030 articulates FAO’s vision of a sustainable and food secure world for all. Ismahane Elouafi, Chief Scientist for the FAO, joins us to discuss this strategy, the various components and accelerators de…
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Harlan’s Crops and Man with Drs. Thomas Stalker and Marilyn Warburton Humans and the crops they use have co-evolved across the centuries. This episode, Drs. Thomas Stalker and Marilyn Warburton discuss three major periods of time within this relationship as well as misconceptions we might have about our predecessors and where we’re headed next. Tun…
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When nutrients are taken up in the field, they often find their way into the fruits and vegetables that we enjoy. But once we eat them, how can they get back to the fields for future crops? This episode, Rebecca will discuss her work in returning nutrients from human waste back into the soil. Tune in to learn: How nutrients can be returned back to …
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Research is crucial for the advancement of agriculture. However, research solutions must also be feasible for the farmers who will be implementing them. This episode, Heather Hampton+Knodle will discuss her many hats in the worlds of agriculture, policy, and research solutions, as well as her journey as a farmer and research collaborator. Tune in t…
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The Living Soil Handbook with Jesse Frost. Regenerative agriculture focuses on improving soil health by disturbing the soil as little as possible, keeping the ground covered as much as possible, and keeping the ground planted as much as possible. In this episode, farmer Jesse Frost of the No-Till Market Garden podcast walks us through these three t…
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Integrated pest management, or IPM, is a system by which pests are controlled using informed decision-making techniques. Regenerative agriculture is an approach to farming that focuses on soil health and environmental recovery. In this episode, Tom Green finishes out our five part mini-series on IPM by walking us through how these two systems can w…
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