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¶ Introduction
The nutrient uptake values presented in this Crop File are based on whole plant samples collected from two Illinois locations during the 2012 and 2013 growing seasons. Samples were collected at the V4 (fourth trifoliate), V7 (seventh trifoliate), R2 (full bloom), R4 (full pod), R5 (beginning seed), R6 (full seed), and R8 (full maturity) growth stages, then separated into the four components
¶ Table 1. Grain Nutrient Removal, Pounds Per Bushel (lb/bu) |
|
| Nitrogen, N | 2.69 ± 0.15 |
| Phosphorus, as P2O5 | 0.52 ± 0.04 |
| (as P) | (0.23 ± 0.02) |
| Potassium as K2O | 1.04 ± 0.05 |
| (as K) | (0.86 ± 0.04) |
| Calcium, Ca | 0.13 ± 0.01 |
| Magnesium, Mg | 0.12 ± 0.01 |
| Sulfur, S | 0.15 ± 0.01 |
¶ Table 2. Grain Nutrient Removal, Ounces Per Bushel (oz/bu) |
|
| Zinc, Z | 0.030 ± 0.002 |
| Iron, Fe | 0.053 ± 0.004 |
| Manganese, Mn | 0.020 ± 0.002 |
| Copper, Cu | 0.008 ± 0.001 |
| Boron, B | 0.024 ± 0.002 |
¶ References
Bender, R.R., J. W. Haegele, and F. E. Below. 2015. Nutrient Uptake, Partitioning, and Remobilization in Modern Soybean Varieties. Agrononmy Journal 107:563–573