Sparks, Zinc deficiency, table 1

This table shows severity of zinc deficiency in one column; the second and third columns show the zinc in leaflet by parts per million by average and range, accordingly. The severity levels are on a scale of 1-5. Level 1—average zinc in leaflet was 46 ppm with a range of 11-202. Level 2—average zinc was 19 ppm with range of 10-36. Level 3—average was 17 ppm with range of 9-38. Level 4—average was 15 ppm with range of 11-22. Level 5—average was 14 ppm with range of 8-34.

Table 1. Severity of zinc deficiency symptoms of pecan trees versus average concentration and range in zinc concentration in the leaflet.