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 members, or its advertisers.
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Flyway Flooding Impacts with Dr. Amitava Chatterjee
Episode 118
Friday, August 16, 2024 • Duration 39:45
"Shallow water habitat management influences soil CO2 efflux from agricultural fields in the Lower Mississippi River Basin (LMRB), USA" with Amitava Chatterjee.
The Lower Mississippi River Basin (LMRB) serves as a critical stopover habitat for migratory birds traveling between Canada and Central and South America, presenting both challenges and opportunities for habitat conservation. To support these birds, farmers in the region flood agricultural fields in the winter, creating temporary wetlands that provide habitat and essential food sources. This practice has increased bird stopovers but raises concerns about soil health, as flooding can alter soil properties. In this episode, Dr. Amitava Chatterjee shares his insights on research related to the effects of flooding on soil properties in agricultural lands in the LMRB and how it contributes to maintaining sustainable stopover habitats for migratory birds.
Tune in to learn:
· What migratory bird stopovers are
· How flooding of agricultural lands helps migratory birds
· How flooding of agricultural land affects soil health
· How flooding affects soil microbial activity
· What are the long-term impacts of agricultural land flooding
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 you'd like to see old episodes or sign up for our newsletter, you can do so here: https://fieldlabearth.libsyn.com/.
"Soil carbon mineralization, enzyme activities, and crop residue decomposition under varying soil moisture regime" article in Soil Science Society of America Journal: https://doi.org/10.1002/saj2.20601
Thank you to Om Prakash Ghimire for help with the shownotes and other assets.
Field, Lab, Earth is Copyrighted by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.
Leaf Mold Compost for Urban Agriculture with Kyle Richardville
Episode 117
Friday, July 19, 2024 • Duration 35:56
"Leaf mold compost for better soil and crop health" with Kyle Richardville
Growing vegetables in urban gardens is becoming a popular and ever more important option for supporting families with nutritious and healthy produce. However, the use of chemical fertilizers and pesticides can cause negative impacts on soil, crop, and human health. To reduce these negative impacts, there is a growing interest in using biologicals and compost manure for crop production. This episode, Kyle Richardville, agronomist and regenerative agriculture consultant at "Understanding Ag," shares his insights on the importance of a compost made from tree leaves and fungi—leaf mold compost—and how it impacts soil microbial communities, soil physical properties, and overall crop production.
Tune in to learn:
· What are biologicals and compost manure?
· What is Trichoderma and how does it help in agriculture?
· How do mycorrhizal fungi benefit plants?
· How does compost manure increase soil and crop health?
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 you'd like to see old episodes or sign up for our newsletter, you can do so here: https://fieldlabearth.libsyn.com/.
Mitigating Coastal Eutrophication with Drs. Wafa Malik and Patrick Durand
Episode 108
Friday, January 19, 2024 • Duration 41:39
"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. Coastal eutrophication is a major issue worldwide due to the increasing discharge of nutrient emissions from agricultural activities into coastal ecosystems. Several efforts have been made to reduce eutrophication, achieving up to 35–40% reduction, but these measures are not sufficient to eliminate the problem. For more sustainable and effective solutions, the root causes of the nutrient emissions, especially nitrogen, need to be addressed in current agricultural practices. In this episode, Drs. Wafa Malik and Patrick Durand share their research on the reduction of coastal eutrophication in Brittany, France, focusing on changing cropping systems and reducing the sources through modeling the effectiveness of different approaches and taking into consideration the interests of farmers and the local community.
Tune in to learn more about
· How eutrophication happens
· What are the causes and consequences of coastal eutrophication
· What are the agricultural impacts of eutrophication
· How we can change cropping systems to reduce eutrophication
· What mitigation challenges exist in reducing coastal eutrophication
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 you'd like to see old episodes or sign up for our newsletter, you can do so here: .
High-Throughput Seed Phenotyping with James Clohessy
Episode 18
Friday, June 21, 2019 • Duration 35:01
"A Low-Cost Automated System for High-Throughput Phenotyping of Single Oat Seeds" with James Clohessy.
A Rube Goldberg machine is a machine intentionally designed to complete a simple task using overly complicated steps. James Clohessy and his team are doing just the opposite. Using machine learning, web cameras, open software, and photogrammetry techniques, they're developing low cost, high-throughput, high efficiency phenotyping systems. With these systems, researchers can save hours of time that would normally be spent on taking individual seed measurements by hand, such as height, width, and color, all while gaining greater detail about the seed such as volume and density.
Listen in to learn more about James' new system as well as:
What are phenotyping and photogrammetry?
What are some of the applications of knowing seed size, color, and weight?
What are some of the limitations of high-throughput phenotyping?
What are some of the future applications of these machine learning systems?
If you would like to find transcripts for this episode or sign up for our newsletter, please visit our website: http://fieldlabearth.libsyn.com/
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 you would like to reach out to James, you can find him here: jameswclohessy@gmail.com https://www.linkedin.com/in/jameswclohessy/ @ufifasnfrec
Vadose Zone Gas Migration and Leaking Wells with Olenka Forde
Episode 17
Friday, May 17, 2019 • Duration 31:15
"Vadose Zone Gas Migration and Surface Effluxes after a Controlled Natural Gas Release into an Unconfined Shallow Aquifer" with Olenka Forde.
Olenka Forde thinks a lot about a world that we'll never see – the world existing right underneath our feet. Olenka's research is related to hydraulic fracturing and she is interested in how we can safely extract oil and gas resources without negative impacts on fresh water supply, wildlife, and even humans. She does this by monitoring the fate and transport of gases in the subsurface and emissions at the ground surface at a controlled natural gas release experiment, essentially simulating what happens when a gas well leaks.
Gas leakage at oil and gas wells is an old problem, but has garnered renewed interest with the advent of hydraulic fracturing. Hydraulic fracturing is a process that works to free valuable natural gas from beneath rock deep in the earth through injecting a mixture of water, sand, and chemicals at a very high pressure. The gas is released through these cracks and up through a constructed well to the surface for collection. Occasionally; however, sealing of wells is imperfect and gas present along the borehole escapes, causing the potential for groundwater contamination and surface emissions. Olenka works to map the pathway of gases after the point of release, eventually with the goal of creating improved action plans for industry professionals to keep people and the environment safe. Tune in to learn about her research and find answers to questions such as:
What's the difference between an unconventional and conventional gas well?
If you would like to find transcripts for this episode or sign up for our newsletter, please visit our website:
Turfgrass Colorants with Drew Pinnix
Episode 16
Friday, April 19, 2019 • Duration 37:01
"Color, Transfer, and Application Parameters of Turfgrass Colorants" with Garland (Drew) Pinnix.
In kindergarten, we're taught that colors can be one of seven colors of the rainbow. Later, we learn fun colors like purple mountain majesty and get excited when our friend brings a 50-pack of crayons. In reality though, color is much more complex, a mixture of hue, brightness, and saturation. Drew Pinnix thinks a lot about color, specifically in relation to turfgrass. Most of the time, the beautiful turfgrass we see at golf courses or football fields is due to careful management by professionals trained in plant science or agronomy. However, sometimes weather or cost restrictions gets in the way, and turfgrass managers look to colorants to get the turfgrass ready for use and for cameras quickly.
However, getting a natural color that won't rub off as football players slide in after a fumble is incredibly complicated. That's where Drew's team comes in. He works to scientifically evaluate turfgrass colorants so football fields and golf courses can keep looking gorgeous year-round. Tune in to learn more about Drew's experimental design, turfgrass management, and learn answers to the following:
What are some reasons that turfgrass managers might use colorants?
What is overseeding, and why might it be done intentionally?
What is hue angle?
What is the difference between hue, saturation, and brightness?
It will be freely available from 19 April to 3 May, 2019.
If you would like to find transcripts for this episode or sign up for our newsletter, please visit our website: https://fieldlabearth.libsyn.com/
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.
Hydrological Observatories with Dr. Heye Bogena
Episode 15
Friday, March 15, 2019 • Duration 41:57
"Toward Better Understanding of Terrestrial Processes through Long-Term Hydrological Observatories" with Dr. Heye Bogena.
Hydrology, put plainly, is the study of water: how it moves, where it goes, and what's inside it. Hydrologists gather as much information as they can about water in order to understand current water trends and to predict potential water patterns in the future. In a changing climate, this is more crucial than ever. Using data from multiple networks of hydrological observatories, hydrologists gather information and create and test models surrounding questions such as: How will land use change affect water flux? Will climate change create conditions for more low or high flow events? How can forestation affect frequency of high flow events? They then use this information to create resources for natural resource managers, officials, and the public to make informed decisions. In this episode, we'll take a deeper look at how hydrological observatories are making strides in understanding water and its movement around the world.
We'll discuss:
What's a catchment?
What is the history of hydrological observatories?
How do hydrological observatories communicate?
Why should different disciplines of sciences collaborate with hydrology?
If you would like more information about this topic, this episode's paper, the introductory paper to the Hydrological Observatories special section in Vadose Zone Journal, is available here: http://dx.doi.org/doi:10.2136/vzj2018.10.0194
This paper is always freely available.
If you would like to find transcripts for this episode or sign up for our newsletter, please visit our website: https://fieldlabearth.libsyn.com/
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 you would like to reach out to Heye, you can find him here: Email: Agrosphere Institute (IBG-3) web page:
Precision and Sustainable Agriculture with Dr. David Clay
Episode 14
Friday, February 15, 2019 • Duration 42:13
Precision Agriculture Basics with Dr. David Clay
Dr. David Clay, along with the precision agriculture community, are working like codebreakers to crack the secret to more efficient, more environmentally friendly farming. The key? Understanding variability.
Across any given farm field, there are many discrepancies in how given points of the field react to similar management practices. If farmers understand what causes those discrepancies, they can fine tune management in ways that can optimize fertilizer and pesticide use, inputs, and time. Getting this type of information used to mean extensive and costly soil sampling. Dr. Clay discusses how tech has made it possible to make great management decisions from data obtained miles above a farm.
Learn about this as well as:
What are the types of variability found in a field?
Why does topography affect yield?
How does the Dust Bowl impact us and the land today?
What is soil's memory effect?
What are zone sampling and grid sampling? Why is the difference important?
The first chapter will be freely available from 15 February to 1 March, 2019.
If you would like to find transcripts for this episode or sign up for our newsletter, please visit our website: https://fieldlabearth.libsyn.com/
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.
The OSU Hand Planter with Dr. Bill Raun
Episode 13
Friday, January 18, 2019 • Duration 37:15
"Hand Planter for the Developing World: Factor Testing and Refinement" with Dr. Bill Raun
Across Central America, South America, and Africa, there are thousands of acres of land with slopes and landscapes that will never be suitable for mechanized agriculture. For hundreds of years, they have been planted by hand, a practice that continues today.
The problem is, as technology in chemical seed treatments has advanced, technology in hand-planting techniques has not, resulting in thousands of farmers' exposure to seed-friendly chemicals that can lead to sickness and even birth defects in humans.
After splitting much of his childhood and early career between North, South, and Central America and seeing the results of this exposure, Dr. Bill Raun decided it was time to do something about it. Working with engineering students and professors at Oklahoma State University, he has spent more than 20 years developing a new hand planter that will work with existing hand-planting techniques to increase yields and get good, chemically treated seed out of farmers' hands.
Listen now to learn:
What are some of the problems Central American farmers face when using traditional hand-planting techniques?
How can use of the hand-planter and modified hand-planting techniques double yields for developing world farmers?
Why is anthropology so key in designing new tools, and how does human interaction affect design?
If you would like to find transcripts for this episode or sign up for our newsletter, please visit our website: https://fieldlabearth.libsyn.com/
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.
Sediment and the Health of the Great Barrier Reef with Dr. Peter Hairsine
Episode 12
Friday, December 21, 2018 • Duration 39:12
"Review: Sediment-Related Controls on the Health of the Great Barrier Reef" with Dr. Peter Hairsine.
In 2016, a catastrophic bleaching event killed off around 30% of the Great Barrier Reef's coral. The reef has been in a precarious spot for decades, but climate change and human-caused pollution have amplified the threats to its existence. Dr. Peter Hairsine is a scientist with The Fenner School of Environment and Society, The Australian National Univ., Canberra, Australia, working on the front lines of monitoring and researching the reef's responses to these changes, with an ultimate goal of preserving it as one of the world's richest and most unique ecosystems.
Join us as Dr. Hairsine and I discuss the stresses that the Great Barrier Reef (GBR) currently experiences. Warming ocean temperatures, deteriorating river water quality, and tropical storms all threaten the fragile coral that houses thousands upon thousands of native species. You'll learn the three ecosystems of reef within the GBR, as well as the sources of sediment and attached pollutants that currently feed into it.
Also in the episode:
Why is the reef considered a "nutrient desert"? Why is that a good thing?
What is a bleaching event? Why does it happen?
How does a "plague" of starfish occur?
How do reservoirs help trap sediment before it can reach the reef?
What is an evidence based way of prioritizing the locations where rehabilitation money should be spent?
If you would like to find transcripts for this episode or sign up for our newsletter, please visit our website: https://fieldlabearth.libsyn.com/
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.
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 you would like to reach out to Olenka, you can find her here: oforde@eos.ubc.ca
"Knowledge, Skills, and Abilities in the Precision Agriculture Workforce: An Industry Survey," published in Natural Sciences Education: https://doi.org/10.4195/nse2018.04.0010
Mentioned around 6:30 in the interview: De'ath, G., Fabricius, K.E., Sweatman, H. and Puotinen, M., 2012. The 27–year decline of coral cover on the Great Barrier Reef and its causes. Proceedings of the National Academy of Sciences, p.201208909. https://www.pnas.org/content/109/44/17995
Field, Lab, Earth is copyrighted to the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.
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