Yes...slightly yellowish green color. But get out the brix meter...because K is so mobile lower green leaves will have lower brix than new growth. Or sap pH will be slightly lower. I am right there with you at 5% k and am spraying ksil
what will be interesting is my organic matter is similar to yours. Just topsoil with a little peat for carbon. I am curious if we can build organic matter in the soil. I am dumping alfalfa hay all over the lot today and then I will spray that with nitrogen and some microbes.
Btw...I am looking at an occasional ammonium sulfate fert for similar reasons you are using n phuric. My water has an alkalinity of 56...so not terrible but could be better
what will be interesting is my organic matter is similar to yours. Just topsoil with a little peat for carbon. I am curious if we can build organic matter in the soil. I am dumping alfalfa hay all over the lot today and then I will spray that with nitrogen and some microbes.
Btw...I am looking at an occasional ammonium sulfate fert for similar reasons you are using n phuric. My water has an alkalinity of 56...so not terrible but could be better