Table 2.
Background leaf (V5–6) and soil characteristics for the study sites.
| Site | Applied Nutrient |
Sampling Stage | Leaf Analysis | Soil Analysis (0–20 cm) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mn | B | Zn | Fe | Texture † | SOM | CEC | pH | Mn | B | Zn | Fe | |||
| (mg kg−1) | (%) | meq./100 g | −log (H+) | (mg kg−1) | ||||||||||
| 1 | B | V5 | 74.3 | 6.0 | 22.5 | 270.3 | SiCL | 2.8 | 18.2 | 5.6 | 20.3 | 0.65 | 2.43 | 100.8 |
| 2 | Mn | V5 | 62.0 | 8.0 | 20.0 | 265.5 | SiCL | 3.2 | 27.1 | 6.4 | 22 | 0.88 | 1.68 | 70.5 |
| 3 | Zn | V5 | 130.5 | 6.8 | 22.3 | 308.3 | SiCL | 3.2 | 27.1 | 5.1 | 37.3 | 0.73 | 0.9 | 53.5 |
| 4 | Zn & Fe | V5 | 180.0 | 9.8 | 20.0 | 403.3 | SiCL | 3.6 | 29.4 | 5.0 | 44.3 | 1 | 1.43 | 109.5 |
| 5 | Fe | V6 | 129.3 | 12.4 | 102.0 | 181.1 | L | 2.4 | 16.2 | 7.5 | 1.9 | 0.8 | 4.3 | 4.9 |
| Critical Level ‡ | 15.0 | 4.0 | 15.0 | 10.0 | - | - | - | - | 2.0 | 0.5 | 0.75 | 4.5 | ||
† Soil texture classes include silty clay loam (SiCL), and loams (L). ‡ Leaf analysis critical levels are from Mills and Jones (prior to tassel) and soil analysis critical levels are from Wortman et al. (2009) and Ward (2015).