What are the best sources of organic potassium for grape production?

Asked February 12, 2015, 3:35 PM EST

What are the best sources of organic potassium for grape production. It is for a five acre vineyard. I am interested in foliar and granular application options.

Minnesota organic production grapes viticulture horticulture

1 Response

See following article on Potassium fertilizers by Daniel Kaiser, Extension Soil Fertility Specialist, at the University of Minnesota. His contact information is at the end of the article.

http://blog-crop-news.extension.umn.edu/2014/10/potassium-fertilizer-considerations-for.html

There are many potassium fertilizers available for use in organic production. You can find some that are OMRI-listed by going to the OMRI website:

http://www.omri.org/simple-opl-search/results/potassium

Hope this helps!