Table 1.2-4

Table 1.2-4. Optimum levels used to interpret the Mehlic 3 soil test for agronomic crops in Pennsylvania.
Soil test Optimum Range Comments
pH 6.0–7.0 A pH of 6.0–6.5 is considered adequate for most agronomic crops; however, 6.5–7.0 is recommended for alfalfa and barley.
Phosphorus (P) 30–50 ppm All agronomic crops.
Potassium (K) 100–150 ppm
100–200 ppm		 Grain crops
Forage crops
Magnesium (Mg) 120–180 ppm
60–120 ppm		 Grass forage crops
Other agronomic crops