Couple years ago, I did soil tests on my one plot. It showed very high levels of both potassium and phosphorous. The last few years, I added nothing to my plots except nitrogen, hoping, expecting the levels of P and K to come down.
This year, before applying 10-20-20 to part of the plot, we pulled some samples, then put the 10-20-20 on. Once the samples came back, it again showed very high levels of P and K. It's much higher now because I added the 10-20-20.
My thought is that it's possible that with high levels of potassium, my soil may be becoming "salty", as potassium is a salt. This may be affecting my plants and will slow their growth. Maybe I'm wrong, just concerned.
My advice is to be a little careful just throwing fertilizers around. Do the soil tests and see just what is needed and follow the recommendations.
I know now that for the next 5 years or so, the only thing I'll be putting on is nitrogen. I'll test in a few years and see where I'm at.
Just a word of caution, thats all.
This year, before applying 10-20-20 to part of the plot, we pulled some samples, then put the 10-20-20 on. Once the samples came back, it again showed very high levels of P and K. It's much higher now because I added the 10-20-20.
My thought is that it's possible that with high levels of potassium, my soil may be becoming "salty", as potassium is a salt. This may be affecting my plants and will slow their growth. Maybe I'm wrong, just concerned.
My advice is to be a little careful just throwing fertilizers around. Do the soil tests and see just what is needed and follow the recommendations.
I know now that for the next 5 years or so, the only thing I'll be putting on is nitrogen. I'll test in a few years and see where I'm at.
Just a word of caution, thats all.