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¶ Bromegrass, smooth (Bromus inermis)
¶ A: Early growth
Plant Part: Whole stems
Sampling Procedure: Collect whole stems from 25 to 35 plants before the seed head forms. The final sample should form a bundle that can be encircled by your thumb and forefinger. Cut off about an inch above ground level. Pack loosely in paper bag. Core samples from baled hay may also be submitted for plant tissue analysis.
| Analysis | Tissue Concentration Guidelines | ||||||||
| Low/Marginal Range | Sufficiency Range | Excessive, toxic? | |||||||
| Nitrogen, % N | 1.80 | - | 2.20 | 2.20 | - | 3.50 | |||
| Phosphorus, %P | 0.20 | - | 0.25 | 0.25 | - | 0.55 | |||
| Potassium, % K | 1.70 | - | 2.00 | 2.00 | - | 3.20 | |||
| Calcium, % Ca | 0.20 | - | 0.25 | 0.25 | - | 0.70 | |||
| Magnesium, % Mg | 0.15 | - | 0.20 | 0.20 | - | 0.50 | |||
| Sulfur, % S | 0.10 | - | 0.15 | 0.15 | - | 0.40 | |||
| Zinc, ppm Zn | 10 | - | 20 | 20 | - | 50 | |||
| Iron, ppm Fe | 30 | - | 50 | 50 | - | 250 | |||
| Manganese, ppm Mn | 20 | - | 30 | 30 | - | 200 | |||
| Copper ppm Cu | 3 | - | 5 | 5 | - | 20 | |||
| Boron, ppm B | 4 | - | 8 | 8 | - | 15 | |||
| Nitrogen-to-sulfur ratio (N:S) | 10 | - | 15 | ||||||
| Sodium, % Na | n/a | ||||||||
| Chloride, % Cl | n/a | ||||||||
¶ Figure A.
