Has anyone tried a late-season application of potassium on soybeans during grain fill?

Question

Recently, I was speaking with an agronomist that suggested an application of potassium thiosulfate @ 1-2 gal rate during pod fill (R3ish) would be money well spent.  Has anyone tried a late-season application with any success?  Any other potassium products besides potassium thiosulfate?

Answer

Late season ******.  Do it

Our agronomist wants us to dry spread at early vegetative but I see results in surek from agro liquid at r2-3 with fungicide

We tried dry potash at early reproductive stage but got too much leaf burn

Good luck

Answer

*************** in NE who grows 120 bu+ soybeans applies a mixture like that using 360 undercover on his self propelled sprayer. There's more to his program than that but it is a critical part of the equation for him.

Answer

Last year I made some of my best-ever soybean yields with late season soybean foliar K. But this year I've figured out, from tissue samples at least, that large amounts of Potash in front of planting is in the root zone soon enough and long enough to do the job. By large amounts, I mean 150-200 units. But, is it enough, and is it worth it, are the questions?

Answer

Yes I have applied late season K to soybeans. In my program I am using a product called mkp. I farm in western Canada so the products could be different for you (I will attach a link at the bottom) the product is a dry soluble, I apply 2.5lbs per acre with 15usg per acre water and a full rate of a stroby fungicide applied at R2-R3. I have averaged 10-20% yield increase using this program over the last 3 years

Best of luck

https://www.atpnutrition.ca/products/water-solubles/water-solubles-mkp/

Answer

Soybeans following an application of nursery manure is amazing, so I think you are on to something. Going on late season would need to be available to the plant to benefit but ******* feeding does work well.

Call (844) 200-FARM

Has anyone tried a late-season application of potassium on soybeans during grain fill?

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