Always a fascinating read. Thanks APNI

Potassium deficiency symptoms: No one better than Plant Health with nutrients on hort crops. This great poster here: lnkd.in/euFurDvg

Now we're working on NO3 & NH4 preference of Rosacea and Solanaceae crops.

#Yara “Knowledge Grows” pledge is more than a slogan.

New study- No #phosphate rock shortage for 350 yr at current usage or 1,000 yr with efficiency gains. Read report: lnkd.in/eBNYYY7v
Other good P groups
Global Phosphorus Institute lnkd.in/exUADzRx
Sustainable P
lnkd.in/eV3yNCmg
STEPS Center
steps-center.org #fertilizer #soil

I hope you follow Andy (Andrew McGuire) to get an evidence-based view of many over-hyped issues in ag production and #soils . You may not always agree, but he leads the discussion with facts. He's a major reason I look forward to twitter. Great blog too at:
csanr.wsu.edu/author/amcguir…

Why Farmers Use So Much Water? Consider #water indirectly delivered as food
Using these sources
lnkd.in/edjZdasu
lnkd.in/eZb9T4v4
I calculated H2O for 2,300-cal meal. Wow, 1912 gal (7200 L) PER DAY
Do farmers use water? Yes, but we benefit in every bite #Yara leads

Magnesium frequently overlooked nutrient. Mineral weathering provides Mg, but crops may benefit from added Mg. Many good Mg sources available. lnkd.in/gVVSdBt5
Deeper dive here lnkd.in/gf2GZ-Tb
Lucky to have Merle Traenkner Mg-specialist at Yara International
Plant Health for pics

Does Nitrogen Source Matter? New 15N comparison for top-dressing corn: KNO3> UAN> urea for N uptake and recovery. Differences due to loss of urea-N and UAN-N via NH3 volatilization & more microbial immobilization. Thx Kelsey Griesheim, Ph.D.
lnkd.in/gFb9GJ2n #4R #soil #nitrogen

Composts… more mythbusting- Nice article on value of composts. J Downer says composting NOT 'natural' process
lnkd.in/gr7bJBfH
1 COMPOSTING Doesn't Occur in Nature- requires our intervention
2 DOESN'T HELP ENVIRONMENT
3 MAY or MAY NOT make good fertilizer
4 NOT GOOD MULCH

Encouraging news! Increasing yields ~5X would boost farming families & sustainability. Good agronomy, nutrients, & genetics should not be rare. Yieldgap.org has potential for increasing global yields. My small contribution helping degraded #soil African Plant Nutrition Institute #4R

In this article: The acutely hungry population is growing. The number of chronically hungry people is growing too. New seeds [GMO], strengthened extension services and technology adoption [fertiliser and pesticides] are
agri-pulse.com/articles/19276…

Soil pH- fundamental, but not well understood. Difficult to measure pH, harder to predict impact on plant nutrient availability. pH changes soil and root reactions specifically for each nutrient.
Barrow & Hartemink follow with another great review. Read: lnkd.in/gAbRJ5ue

Thanks. I continually recommend this book to anyone wanting to understand transforming family trajectory with a bucket of fertilizer, genetics, and simple agronomy.

Next Myth: Soil pH & Nutrient Availability. I posted on Mulder Chart. Truog developed this w/o data but good ideas- Now widely accepted.
@alfredHartemink dives into origins. Yes, flawed but be useful intro? Need to go beyond superficial understanding rdcu.be/c6elC

Next Myth: Soil pH & Nutrient Availability. I posted on Mulder Chart. Truog developed this w/o data but good ideas. Now widely accepted. @alfredHartemink dives into origins. Yes, flawed can it be useful intro? Need to go beyond superficial understanding! lnkd.in/ewZvwN6H

Mulder chart- part 2. I dissected each nutrient antagonism & synergism in original Mulder chart.
Red Arrows show 'stimulation', Green Arrows show 'antagonism'. I'm dubious about validity of some arrows, but helps me understand original intent (note arrow direction too) #4R #soil

Mulder’s Interactions: No figure in plant nutrition has more attention. Mulder (1953) used his observations, but Chart is widely accepted w/o much foundation.

Fan (2021) shows synergisms & antagonisms. Plants evolved to maintain internal nutrient balance
lnkd.in/dN3PgMRX

Soil Awareness- An outcome of soil health metaphor is more appreciation for resources responsible for life. Not the 1st generation to know #soil importance, but need stewardship acceleration (1984, 1970, 1959 L-R) #Yara Better Soil Alliance- moving this forward. #4R #soil health

#Strawberry & nutrition? I just spoke at North Amer Straw. Growers Symp. Of ~80 talks, ~4 on nutrient mngt. With other major issues, plant nutr may seem boring, but vital for yield and quality.
#Yara prepared this chart a few years ago. Now digging deeper into these relationships

News! Global Database of #Soil #Plant Available #Phosphorus published 5y since we started the idea doi.org/10.1038/s41597… @nature AgResearch Lancaster Environment Centre Lancaster University

Three of my agronomy hero's were honored at recent Fluid Fertilizer Forum. Bert Bock was mentor for my 1st job out of school; Bill Easterwood was a great colleague at Yara, and Alan Blaylock showed how be impactful industry agronomist. Well deserved recognitions! Consider joining