Field, Lab, Earth

“The effects of different biochar-dairy manure co-composts on soil moisture and nutrients retention, greenhouse gas emissions, and tomato productivity; observations from a soil column experiment” with Dr. Touyee Thao.

Increasing food production needs can sometimes put a strain on the environment. Waste from crop and animal production can exacerbate this problem. But, when waste can be turned into a benefit, we can move closer to a world where both can thrive. In this episode, Touyee joins me to discuss how turning waste products into beneficial materials like biochar and compost can help move the needle in the right direction.

Tune in to learn:

·        How orchard waste can be transformed into soil amendment.

·        What ratios work best when adding biochar and dairy manure amendments.

·        Which amendments have the best impacts on greenhouse gas emissions

·        How these amendments impact soil health.

If you would like more information about this topic, this episode’s paper is available here: https://doi.org/10.1002/agg2.20408

This paper is always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Touyee, you can find him here: [email protected] LinkedIn: https://www.linkedin.com/in/touyee-thao-phd-54a158117

If you would like to reach out to Kailey Miller from our Student Spotlight, you can find her here: [email protected] Twitter: https://x.com/kaileymiller03

Resources

CEU Quiz: Coming soon

Transcripts: Coming soon

Link to Stage 1 (Biochar-Manure Co-compost Lab Incubation) https://doi.org/10.1111/gcbb.13121

Link to full Dissertation. https://escholarship.org/uc/item/62x2w3gs  

Sponsored by METER Group. METER sensors deliver real-time plant, soil, and atmospheric data that fuels environmental research. Listen to METER Group’s podcast We Measure the World to hear how innovative researchers are leveraging environmental data to make our world a better place—and a more sustainable place—at www.metergroup.com/fieldlabearth.

Thank you to our volunteer Om Prakash Ghimire for help with the shownotes and other assets. Thank you to Cole Shalk from 12twelve Media for the Audio Processing on today's episode.

Field, Lab, Earth is Copyrighted by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.

“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

If you would like more information about this topic, this episode’s paper is available here: https://doi.org/10.1002/agg2.20365

This paper is always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Amitava Chatterjee, you can find him here: [email protected] https://www.ars.usda.gov/midwest-area/ames/nlae/people/amitava-chatterjee/

If you would like to reach out to Sourajit Dey from our Student Spotlight, you can find him here: [email protected] https://www.linkedin.com/in/sourajit-dey-100208215

Resources

CEU Quiz: Coming soon

Transcripts: https://www.rev.com/transcript-editor/shared/cTaB7JIZ2cH1QqtVLw5JjYvca7I8sqlKOZGVC9CenIfIxy2o7zVbfXSM16t-ROCHR2T8yeGfZrOLtgLBFV5FDOfDXUw?loadFrom=SharedLink 

“Flooding Fields May Be a Win-Win For Farmers and Birds in the Mississippi Delta” article: https://tellus.ars.usda.gov/stories/articles/flooding-fields-may-be-win-win-farmers-and-birds-mississippi-delta

“Flooding Fields in the Mississippi Delta Helps Crop Yields—and Shorebirds” article: https://www.allaboutbirds.org/news/flooding-fields-in-the-mississippi-delta-helps-crop-yields-and-shorebirds/#

“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

https://directives.sc.egov.usda.gov/18529.wba                           

Conservation Incentive Program: Winter-Flooded Rice Fields for Waterfowl Habitat: https://youtu.be/yzOFy0weIx0?si=QoTRQHwHdwF5ZGo9

MDWFP Waterfowl Program - Mississippi Land Conservation Assistance Network: https://www.mississippilandcan.org/local-resources/MDWFP-Waterfowl-Program/20187

https://www.mdwfp.com/wildlife-hunting/waterfowl-program.aspx

https://www.ars.usda.gov/midwest-area/ames/nlae/

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 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?

If you would like more information about this topic, this episode’s paper is available here: https://doi.org/10.1002/uar2.20022

This paper is always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Kyle Richardville, you can find him here [email protected]   https://understandingag.com/team/kyle-richardville/

If you would like to reach out to Udit Debangshi, you can find him here: [email protected] LinkedIn: https://www.linkedin.com/in/udit-debangshi-703623207

Resources

CEU Quiz: https://web.sciencesocieties.org/Learning-Center/Courses/Course-Detail?productid=%7b6F517EBF-754E-EF11-A317-0022480462A4%7d 

Transcripts: https://www.rev.com/transcript-editor/shared/RfBbxJY4TGtLQKntBYbFAfBJAuFXs_XrgSeIu8t9UABk0ZbgCJGEYhPW16TvZ2Dfgod-jzt8ERNAsjPO9zHV5vJeRck?loadFrom=SharedLink

Understanding Ag: https://understandingag.com/

Additional Resources from Kyle’s Blog: https://groundedregenerativeblog.com/additional-resources/

Teaming with Fungi book: https://www.amazon.com/Teaming-Fungi-Organic-Mycorrhizae-Gardeners/dp/1604697296

Thank you to our volunteer 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.

It’s our birthday! That means it’s time for our annual birthday blooper reel! Enjoy our favorite flubs from the previous year and thank you again for listening! Remember that if you like our show, rating, reviewing, and sharing with friends are the best ways you can show your support.

Contact us at [email protected] 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/.

Field, Lab, Earth is Copyrighted by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.

“Efficacy of novel water-absorbing polymer amended soil for improving drought resilience of Solanum lycopersicum” with Dr. Sanandam Bordoloi.

Drought can be a major problem for tomatoes, particularly in changing climates. Water-absorbant polymers can help water stay in the soil to help tomatoes thrive, but costs can make it hard for farmers to use them. In this episode, Sanandam joins me to discuss his research into developing more affordable, effective water-absorbant polymers from the waste material fly ash.

Tune in to learn:

·        What a WAP is

·        What ratios of WAPs were tested

·        What other materials might be useful for WAP production

·        How a WAP is like a chia seed

If you would like more information about this topic, this episode’s paper is available here: https://doi.org/10.1002/saj2.20480

This paper is always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Sanandam, you can find him here: [email protected] https://www.aalto.fi/en/people/sanandam-bordoloi https://www.linkedin.com/in/sanandam-bordoloi-b7ab99294/ https://twitter.com/iamsanandam

If you would like to reach out to Michael Rabe from our Student Spotlight, you can find him here: [email protected] Twitter: www.twitter.com/rabemich Instagram: www.instagram.com/romechild

Resources

CEU Quiz: https://web.sciencesocieties.org/Learning-Center/Courses/Course-Detail?productid=%7b20346A38-9734-EF11-840A-002248090E3E%7d 

Transcripts: https://www.rev.com/transcript-editor/shared/RfoMEzkXCdnsR7rcmvdIQ-gbiUBycxalor6Z-xFeNo-7mBTr7UUunOas7XoxGaWmOQp8jVNvov79hZPuCY8YgGiQZ9s?loadFrom=SharedLink

Sponsored by METER Group. METER sensors deliver real-time plant, soil, and atmospheric data that fuels environmental research. Listen to METER Group’s podcast We Measure the World to hear how innovative researchers are leveraging environmental data to make our world a better place—and a more sustainable place—at metergroup.com/fieldlabearth

Thank you to our volunteer Om Prakash Ghimire for help with the certified crop adviser quiz.

Field, Lab, Earth is Copyrighted by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.

“Can we simultaneously decontaminate and cultivate? An urban cherry tomato story” with Marie-Anne Viau and Dr. Adrian Paul

Contamination of various kinds can make it difficult to ensure healthy and safe food crops in urban agriculture. Phytoremediation is a strategy where we may be able to use plants’ incredible natural abilities to help with this problem. This episode, Marie-Anne and Adrian join me to discuss harnessing phytoremediation to help clean soils for tomato crops.

Tune in to learn:

·        How phytoremediation works

·        How researchers process contaminated plant material

·        Whether phytoremediation can help boost soil health and yields

·        How phytoremediation compares to other phytoremediation methods

If you would like more information about this topic, this episode’s paper is available here: https://doi.org/10.1002/uar2.20051

This paper is always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Marie-Anne, you can find her here: [email protected]  https://www.researchgate.net/profile/Marie-Anne-Viau

If you would like to reach out to Adrian, you can find him here: [email protected] 

If you would like to reach out to Charanpreet Kaur from our Student Spotlight, you can find her here: [email protected] Linkedin: https://www.linkedin.com/in/charanpreet-kaur-dhiman Twitter: https://www.twitter.com/Cpk_Dhiman

Resources

CEU Quiz: https://web.sciencesocieties.org/Learning-Center/Courses/Course-Detail?productid=%7b3C0FB739-3B24-EF11-840A-000D3A37CD5C%7d 

Transcripts: https://www.rev.com/transcript-editor/shared/FQ_1GJJOxhareqg61_gneDKAlS_TJH6X9rTcwz4TH_Rg92t-q_J6qkO_FYzxWZYK6Av9vFe0qOJbXgZZo1-Dbdx9kTE?loadFrom=SharedLink 

The Potential for Urban Agriculture in New York City: growing capacity, food security & green infrastructure: https://www.researchgate.net/publication/268516292_The_Potential_for_Urban_Agriculture_in_New_York_City_growing_capacity_food_security_green_infrastructure

Carrot City: Creating Places for Urban Agriculture: https://www.torontomu.ca/carrotcity/book.html

Articles mentioned by Adrian:

“Beyond Cleansing: Ecosystem Services Related to Phytoremediation” article: https://www.mdpi.com/2223-7747/12/5/1031

“Reclamation of urban brownfields through phytoremediation: Implications for building sustainable and resilient towns” article: https://www.sciencedirect.com/science/article/abs/pii/S1618866721003915

Coverage on research presented in English:

“Montreal researchers use willows to decontaminate polluted soil, groundwater” article: https://www.cbc.ca/news/canada/montreal/montreal-researchers-use-willows-to-decontaminate-polluted-soil-groundwater-1.4672233

“Researchers are using plants to tackle urban pollution” article: https://universityaffairs.ca/news/news-article/researchers-are-using-plants-to-tackle-urban-pollution/

“Where there's a willow, there's a way: City using saplings to decontaminate land” news story: https://montreal.ctvnews.ca/where-there-s-a-willow-there-s-a-way-city-using-saplings-to-decontaminate-land-1.3947252

Research leader Michel Labrecque’s Twitter: https://twitter.com/MichelPhyto

Plant Biology Research Institute Twitter: https://twitter.com/IRBV_Montreal

Website for research leader Michel Labrecque: https://irbv.umontreal.ca/le-personnel/michel-labrecque/

Urban Agriculture program at Collège Ahuntsic (French): https://www.collegeahuntsic.qc.ca/programmes-dec/techniques/agriculture-urbaine

Cultive ta Ville Montreal (French): https://cultivetaville.com/fr/cartes/montreal

Correction

Adrian mentions a plant with up to 25% of Ni, but it is 25% of Ni in the latex, not the sap. More information can be found here: https://www.bbc.com/news/science-environment-45398434

Field, Lab, Earth is Copyrighted by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.

“A practical method to improve the efficiency of pollination in maize breeding and genetics research” with Dr. Dylan Schoemaker

Mismatched pollination times can make desirable genetic matches beyond the reach of practical plant breeders. Storing pollen is one solution, but limitations in cost and feasibility can make viable pollen storage tricky. This episode, Dr. Dylan Schoemaker shares his work developing cheaper, easier methods of pollen storage to extend shelf life, increase flexibility in breeding workflows, and bring those plant matches back within reach.

Tune in to learn:

·         What issues make pollen preservation difficult

·         How long this method can extend pollen life

·         How clumping can affect pollen preservation

·         How plant breeders avoid cross-contamination

If you would like more information about this topic, this episode’s paper is available here: https://doi.org/10.1002/csc2.21049

This paper is always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Dylan, you can find him here: [email protected] https://twitter.com/dyl_schoe98 https://www.linkedin.com/in/dylan-schoemaker-76a830119/

Resources

CEU Quiz: https://web.sciencesocieties.org/Learning-Center/Courses/Course-Detail?productid=%7b1E8D214E-9513-EF11-9F89-000D3A5A2312%7d 

Transcripts: https://www.rev.com/transcript-editor/shared/ZsE2iAAUVlL5R4m1tT67VCNqGkmCkw6ykwwQKrDtiIdw956XK1tIc1gu81y9nDLY-W4TcDoaO82khrS9q13Hrpcf0XM?loadFrom=SharedLink 

Power Pollen: https://powerpollen.com/

Thank you to our volunteer 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.

“Comparative productivity of six bioenergy cropping systems on marginal lands in the Great Lakes Region, USA” with Dileepa Jayawardena.

Bioenergy crops present a promising source for biofuel production, offering a potential solution to reduce reliance on fossil fuels. However, they face criticism for potentially encroaching on arable land essential for food production to sustain growing populations. To address this issue, there is a growing focus on utilizing marginal lands for growing bioenergy crops, which are less suitable for crop production. Marginal lands typically suffer from poor soil health and low nutrient and water availability. Therefore, it is crucial to identify and develop bioenergy crops that can thrive in such conditions and produce biomass for biofuel production while also confirming which marginal lands are best suited to these uses.  In this episode, Dileepa Jayawardena, a Research Associate at The Great Lakes Bioenergy Research Center, Michigan State University, sheds light on his research aimed at finding suitable bioenergy cropping systems for marginal lands in Michigan and Wisconsin for producing biomass for long-term bioenergy production while minimizing the competition of land for food crops. 

Tune in to learn more about

·         What are bioenergy crops?

·         What is the importance of bioenergy crops?

·         Why marginal lands can be suitable for bioenergy crops?

·         Which cropping system is better for marginal lands?

·         How to make sustainable biofuel production?

If you would like more information about this topic, this episode’s paper is available here: https://doi.org/10.1002/agj2.21416

This paper is always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Dileepa Jayawardena, you can find them here: [email protected] https://www.canr.msu.edu/people/dileepa-jayawardena

If you would like to reach out to Anthony Mirabito, you can find him here:[email protected]

Resources

 CEU Quiz: https://web.sciencesocieties.org/Learning-Center/Courses/Course-Detail?productid=%7b3F327C62-2207-EF11-9F89-6045BD01BFE7%7d 

Transcripts: https://www.rev.com/transcript-editor/shared/BF5AEqaoPuNl34XUrsRV6b0-ENkI6RnfdnwTpXSltqUHE4ziwT1MwFCYpCMwukPlq4w64fDdmnp5VdIPx3RepxMiNmY?loadFrom=SharedLink

Great Lakes Bioenergy Research Center: https://www.glbrc.org/

Special thanks to Om Prakash Ghimire for help on 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.

“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 health. One of the potential strategies to reduce the effect of past soil erosion is to reverse the soil erosion process by moving soil from where it was deposited by erosion to where soil was lost by erosion. In this episode, Dr. Sharon Schneider shares her research on replacing topsoil in eroded landscapes.

Tune in to learn more about

·         What are the impacts of soil erosion on crop productivity and soil properties?

·         What are strategies for reducing soil erosion?

·         What is the importance of soil organic carbon?

·         Soil and crop benefits of replacing topsoil in eroded landscapes

If you would like more information about this topic, this episode’s papers are available here:  

https://doi.org/10.1002/agj2.21428

https://doi.org/10.1002/agj2.20635

These papers are always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Sharon Schneider, you can find her here: [email protected] https://www.ars.usda.gov/people-locations/person/?person-id=18554

Resources

CEU Quiz: https://web.sciencesocieties.org/Learning-Center/Courses/Course-Detail?productid=%7bEB81DC50-BBFD-EE11-A1FE-6045BD00B487%7d 

Transcripts: https://www.rev.com/transcript-editor/shared/WC-PeR5791dk2tkR2u75p-GOs1oUF7Gi_x80IfNi_8mCiCNvGQVi8yRoAhXnh0w-Fv0hIdbMAvqKTsriQFNgmEBE-pE?loadFrom=SharedLink 

“Soil properties and productivity as affected by topsoil movement within an eroded landform,” published in Soil and Tillage Research: https://doi.org/10.1016/j.still.2008.07.018

Integrated Cropping Systems Research Group: https://www.ars.usda.gov/plains-area/brookings-sd/ncarl/

Data from the study: Schneider, Sharon K.; Sutradhar, Apurba K.; Schumacher, Thomas E.; Lobb, David A. (2024). Soil, crop, and weed communities as affected by soil erosion and topsoil replacement in a Mollisol landform (a six-year soil-landscape rehabilitation study). Ag Data Commons. Dataset. https://doi.org/10.15482/USDA.ADC/25206968.v1

Recorded presentation by Sharon Schneider available at USDA: https://www.ars.usda.gov/ARSUserFiles/30800500/Schneider%202021%20virtual%20field%20day%20720p.mp4

Presentation to the Sustainability of Canadian Agriculture Conference, 2022 by David Lobb: https://umanitoba.ca/agricultural-food-sciences/sites/agricultural-food-sciences/files/2022-04/scac2022lobb.pdf

EA Consumables is the exclusive US distributor of organic elemental analysis products by UK laboratory supplies manufacturer, Elemental Microanalysis. Visit the EA Consumables website for high quality elemental analysis consumable supplies that offer performance you can trust. 

Special thank you to Om Prakash Ghimire for help with the creation of 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.

“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 in the soil, allowing them to calculate how much nitrogen the plants still need. The existing PSNT method was developed during the 1990’s. Now, farming practices are improved, altering the amount of nitrogen fertilizer plants need. Thus, it is important to re-calibrate the test so farmers can have a more accurate estimation of nitrogen requirements and reduce the cost of production.  In this episode, Dr. Charlie White shares his insights on re-calibrating the pre-side dress soil nitrate test for modern corn production systems.

Tune in to learn more about:

·        What the Pre-Sidedress Soil Nitrate Test does

·        The importance of Nitrogen mineralization

·        Which improved practices have impacted the test’s accuracy

·        Which factors most impact the test results now

If you would like more information about this topic, this episode’s paper is available here: https://doi.org/10.1002/agj2.21426

This paper is always freely available.

Contact us at [email protected] 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/.

If you would like to reach out to Charlie, you can find him here: [email protected] https://plantscience.psu.edu/directory/cmw29

Resources

CEU Quiz: https://web.sciencesocieties.org/Learning-Center/Courses/Course-Detail?productid=%7b3A5B06DD-B9FD-EE11-A1FE-6045BD00B487%7d 

Transcripts: https://www.rev.com/transcript-editor/shared/jwOgsvZ0Ye6QLkhgHfzs6VMnOhv92tS5cwYKzr5JDZZlqorAGmEi0ay_XYUdTeGIx0_WFOs4wDJ9jp93XktnxPkcM1Y?loadFrom=SharedLink 

Extension article: https://extension.psu.edu/re-calibrating-the-pre-sidedress-soil-nitrate-test-for-modern-corn-production

Field, Lab, Earth is Copyrighted by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.