Sensitivity of plants to specific ions
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Relative tolerances of grasses to boron
| Botanical name |
Common name |
Tolerance* |
| Agrostis palustris Huds. |
creeping bentgrass |
tolerant |
| Agrostis tenius Sibth. |
highland bentgrass |
tolerant |
| Cynodon dactylon L. |
bermudagrass |
tolerant |
| Festuca arundinacea Schreb. |
tall fescue |
tolerant |
| Lolium perenne L. |
perennial ryegrass |
tolerant |
| Poa pratensis L. |
Kentucky bluegrass |
sensitive |
| Puccinellia distans L. |
puccinellia |
highly tolerant |
| Zoysia japonica Steud. |
Japanese lawngrass |
tolerant |
Key to tolerance ratings:
| Rating |
Definition |
| highly tolerant |
plant uninjured when irrigated with water containing 6 mg/L to 10 mg/L boron |
| tolerant |
leaves uninjured when plant irrigated with water containing 4 to 6 mg/L boron, but plant may be severely injured when irrigated with water containing 6 to 10 mg/L boron |
| moderately tolerant |
leaves uninjured when plant irrigated with water containing 2 mg/L boron, but plant may be severely injured when irrigated with water containing 4 to 6 mg/L boron |
| sensitive |
plant’s leaves severely burned, especially at the tips, when irrigated with water containing 1 mg/L to 2 mg/L boron |