Curt Livesay

Curt Livesay

  • Dynamite Ag

  • United States, IA, West Branch
Curt Livesay West Branch, IA
3 years, 11 months ago
I believe that the source of K is actually incredibly important. EVERYONE should read the article called, "The potassium paradox" by Khan, Mulvaney and Ellsworth from the U of IL. (Linked below). The short version is that they conducted a meta-analysis of over 2000 published research articles and about 3/4 of the time there's no yield benefit to KCL. In the 24% of the time when there was a benefit it met one of three conditions:
1. Sandy Soils naturally low in K
2. Stover removal (and the K was obviously removed with that, thus quickly depleting soils.
3. Soils with major compaction issues (thus preventing the roots to get down in the soil profile to access K, which naturally tends to stratify in soils through slow leaching over time).
In Hands On Agronomy, Kinsey also talks about using potassium sulfate instead of KCL. If a guy is going to broadcast he should use 0-0-50. If you're looking for a good liquid source of KTS that you can use with starter and/or side and, I can actually help with that. Just give me a call: 641-919-5574
http://journals.cambridge.org/download.php?file=%2FRAF%2FRAF29_01%2FS1742170513000318a.pdf&code=cb694876ba46d7662cf84720c13bb8d5#xml=http://journals.cambridge.org/data/userPdf/
Curt Livesay
Curt Livesay
Marc Suderman
Marc Suderman Yakima, WA
3 years, 11 months ago

Great link @Curt Livesay; thank you!

Re: KCl, you get what you pay for and you can't overlook the fact that 2ppm Cl is all it takes to "nuke" microbiology. You can ask any municipal water system manager for confirmation in problem city wells.

Soil Health is much more than just what fertilizer you select.

1. Chemistry - Anything applied to the soil; i.e. fertilizer, etc.
2. Physics - CEC or the composition of the soil (sand, silt or clay).
3. Microbiology - the life in the soil.

All are equally important and must be considered when making fertilizer plans.

Marc Suderman
1 replies