Rob Mikkelsen

@Eabfranc @ACESedu @AuburnAg Great study! I’ll be eager to learn your results. I’m reminded of our field trials in Eastern North Carolina destroyed by black bears. Maybe you can do that work next. Ha!

We just started another trial on deer preferences for different crops (sesame, sun hemp and soybeans) and repellents (several products). Results coming soon... @ACESedu @AuburnAg

@UMNNutrientMgmt @UMNExt @UMNswac Fabian is a great resource and wealth of information. This is so challenging to get right.

Extension specialist Fabian Fernandez joins The Dirt podcast to talk about what he has learned about nitrogen management from his last decade of research: nutrien-ekonomics.com/news/episode-1… "Nitrogen management is risk management." @UMNExt @UMNswac #MNag

@TerryDaynard Andrew is a voice for clear- headed thinking in ag. His insights on this (and other topics on his blog) are always refreshingly honest.

"Common Ground: A narrow organic vision of regenerative agriculture " scienceforsustainableagriculture.com/andrewmcguire2

@PankajTri29 @jordon_wade @WyoWeeds @WesternSugar @IgcastTtu Thanks for sharing. I look forward to reading it in detail. Your results may not be popular in some ag communities, but this information is so valuable.

New paper from lab @WyoWeeds @WesternSugar @IgcastTtu Herbicides Have Minimal and Variable Effects on the Structure and Function of Bacterial Communities in Agricultural Soils - Gaylord - 2025 - Environmental Microbiology - Wiley Online Library …icro-journals.onlinelibrary.wiley.com/doi/10.1111/14…

@Eabfranc @ACESedu @AuburnAg Excellent visual demonstration on the effect of soybean variety on iron deficiency symptoms… and yield. Great work coming from your program!

Iron Deficiency Chlorosis (IDC) affects soybeans grown in high pH soils and tolerant varieties is the best way to overcome this situation. Information on tolerant varieties here: aaes.auburn.edu/variety-tests/ @ACESedu @AuburnAg

@Eabfranc @SoybeanScience1 @ACESedu @AuburnCSES Wow, beautiful “ugly” pictures. Thanks for sharing!

Textbook pictures of K deficiency in soybeans (yellowing of the border of older leaves) in this research trial with the @SoybeanScience1 group at Crossvile, AL. @ACESedu @AuburnCSES

@agronomistag Great resource. Thanks for sharing. Misinformation abounds on so many topics like this. It's nice to have more facts. I usually cite RJ Marles review doi.org/10.1016/j.jfca… Plus, consumed servings of fruits and veggies continues to drop.

Research finds these are the 3 primary factors that affect nutrient density of vegetables: 1. Cultivar/vareity 2. Soil nutrient levels 3. Climate Not organic vs synthetic fertilization. Not heirloom vs modern. Not soil health.

@huckleberrypkr @agronomistag Where did you learn that glyphosate “kills all life”? That sounds like some hyperbole, which does not help the conversation progress.

@agronomistag Imagine defending glyphosate

According to the links he provided, Sam is wrong here.

@C4ClimatePol @agronomistag Where did you get this wrong idea? Geissler & Skow analyzed 64 long-term crop fertilization global trials- found application of mineral N fertilizer associated with average 15% INCREASED microbial biomass and 13% INCREASED soil organic C compared to an unfertilized control.

In agriculture, "there are no solutions, only trade-offs." Here, the common biodiversity vs. productivity. "a reminder of the challenge in reconciling conflicting aims in farmland management." Open access. nature.com/articles/s4418…

@jjmcrops @NCSUCropScience Well deserved promotion and recognition.

Dr. Luke Gatiboni @NCSUCropScience attended “A Celebration of New Professors” lunch reception by NC State and was recognized for his promotion to Full Professor. Dean Garey Fox joined in on the celebration. Congratulations Luke!

It was a real honor to be asked!

@agronomistag Seems puzzling, but many believe that animals magically produce the nutrients and carbon in their manure. Manure is a great resource, but follow the origin trail. Thanks for the great reminders!

@RobSoil Sounds similar to the Ryals and Silver (2013) study I used in my blog post. Applied compost @ 31 tons/ac to CA rangeland and then "discovered" major changes in soil and plant growth. According to their numbers, with the compost came 1100 lb N/ac.

A one-time compost application of 22.3 tons/acre resulted in higher yield, soil organic matter, and nutrients after 26 years compared to no-input plots. Context: producing this much compost per ac would require ~45 years of the region's wheat residues. acsess.onlinelibrary.wiley.com/doi/full/10.10…

@UMNNutrientMgmt Any way to fix the link? I'd love to read the article.

@LuisAzcona @historyinmemes Huh, where did you get that idea? Plants can grow slowly in most any soil, but to have productive crop production, most soils benefit from adjusting pH or nutrient supply. It's not some conspiracy... known for millennia.

@historyinmemes That we need to purchase fertilizers from the store to feed humanity. Or to till the land. Nope. The soil has everything the crops need.

What is one misconception or myth throughout history you would like to debunk?

@DMandziak @YaraWesternCdn @dmandziak does such a great job developing innovative solutions to real-life farming issues. Thanks!

Join @YaraWesternCdn daily at #AIM for Discover Farm tours. Sharing the value of Micronutrients and our NEW Biostimulant line of products. #knowledegrows

@coveryoursoil Thanks for sharing the pictures. How has yield held up with sulfur deficiency in past years?

The difference is subtle, but plots on the right have not had a sulfur application in >100 years. Slightly more yellowing in the top growth for these plants.

@LGatiboni Well deserved.

Five years ago I left my 15-year job as a Professor in Brazil to join NC State as an Assistant Professor. Scary/Crazy move? 😱🤪It was! Did it worth it? Oh, yes! I just got my promotion to Professor at NC State😀😀😀

@DrLimnology Squandering valuable resources.

Hmm. This will also bury a huge amount of very useful #phosphorus needed for fertilizer to sustain agricultural production...

@FertilizerSoil Of course there will always be fertilizer imports in some of the 54 African conference countries. Did anyone suggest that each country be self sufficient within its borders?

Despite producing around 30M metric tons of mineral fertilizer annually, many African countries still heavily rely on imports, leaving them very vulnerable to market shocks? We'll be look for solutions to change this narrative at #AFSH24. Be part of the solution.