One of our best yielding fields (when it does not flood). average test are
pH 7.7, OM 3.0, P 89 (Mehlich 3) K 325 Zn 1.8.
During the last 20 years we have removed 329 lb more P than we have applied and we have never applied K to this field.
Anyone care to share some soil tests from high yielding spots
