Whats so great about the CO2 Extraction Method??
Other testing methods only tell you the TOTAL CONTENT of K, Na, Ca, and Mg present. The CO2 Method separately tells you what is immediately available to the plant (water soluble) and what is “in reserve” as a locked-up compound (generally unavailable). This explains why a more standard test may show certain nutrients as adequate or high, yet the plants show deficiencies in those nutrients – and why you may see the same test results, year after year. Because this method duplicates the way the plant naturally extracts nutrients, it is the most accurate method of measuring K, Na, Ca, and Mg. It does not have to be adjusted according to soil type. The proof is always in crop / plant performance!!
