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Relative tolerances of palms to salinity — Two sources of data
| |
|
Source 1* |
Source 2** |
| Botanical name |
Common name |
Tolerance to salt spray |
Tolerance to soil salinity |
Tolerance to salt spray |
Tolerance to soil salinity |
| Acoelorrhaphe wrightii Becc. |
paurotis palm |
--- |
--- |
moderate |
moderate |
| Brahea armata |
Mexican blue fan palm |
--- |
moderately sensitive |
--- |
--- |
| Butia capitata |
pindo palm |
--- |
sensitive |
--- |
--- |
| Butia capitata Becc. |
pindo palm |
--- |
--- |
tolerant |
tolerant |
| Caryota mitis Lour. |
fishtail palm |
--- |
--- |
moderate |
moderate |
| Chamaerops humilis L. |
Mediterranean fan palm |
--- |
--- |
tolerant |
tolerant |
| Chrysalidocarpus lutescens Wendl. |
areca palm |
--- |
--- |
moderate |
moderate |
| Nolina recurvata Hemsle |
ponytail palm (not a true palm) |
--- |
--- |
moderate |
moderate |
| Phoenix canariensis |
Canary Island date palm |
--- |
tolerant |
|
|
| Phoenix canariensis Chabaud. |
Canary Island date |
--- |
--- |
moderate |
moderate |
| Phoenix dactylifera L. |
date palm |
--- |
tolerant |
tolerant |
tolerant |
| Phoenix reclinata Jacq. |
Senegal date palm |
--- |
--- |
moderate |
moderate |
| Phoenix roebelinii O’Brien. |
pygmy date palm |
--- |
--- |
moderate |
moderate |
| Rhapis excelsa Henry |
lady palm |
--- |
--- |
moderate |
moderate |
| Sabal minor ‘Riverside’ |
dwarf blue palmetto |
--- |
moderately sensitive |
--- |
--- |
| Sabal palmetto |
cabbage palm |
--- |
sensitive |
--- |
--- |
| Sabal palmetto Lodd. |
cabbage palmetto |
--- |
--- |
tolerant |
tolerant |
| Serenoa repens Small |
saw palmetto |
--- |
--- |
tolerant |
tolerant |
| Syagrus romanzoffiana L. |
queen palm |
--- |
--- |
moderate |
moderate |
| Trachycarpus fortunei |
Chinese windmill palm |
--- |
sensitive |
--- |
--- |
| Trithrinax brasiliensis |
Brazilian fan palm |
--- |
moderately sensitive |
--- |
--- |
| Washingtonia filifera |
California fan palm |
--- |
moderately tolerant |
--- |
--- |
| Washingtonia robusta |
Mexican fan palm |
--- |
moderately tolerant |
--- |
--- |
| Washingtonia robusta Wendl. |
Mexican fan palm |
--- |
--- |
tolerant |
tolerant |
Source 1’s ratings for tolerance to saline water spray:
| Rating |
Definition |
| tolerant |
the growth of shoots is reduced by 25%, or more than 25% of leaves are injured, when plant is irrigated with water that has EC greater than 3 dS/m |
| moderately tolerant |
the growth of shoots is reduced by 25%, or more than 25% of leaves are injured, when plant is irrigated with water that has EC of 2 to 3 dS/m and which contains less than 425 ppm of sodium and less than 590 ppm of chloride |
| moderately sensitive |
the growth of shoots is reduced by 25%, or more than 25% of leaves are injured, when plant is irrigated with water that has EC of 1 to 2 dS/m and which contains less than 280 ppm of sodium and less than 360 ppm of chloride |
| sensitive |
the growth of shoots is reduced by 25%, or more than 25% of leaves are injured, when plant is irrigated with water that has EC of less than 1 dS/m and which contains less than 280 ppm of sodium and less than 360 ppm of chloride |
Source 1’s ratings for tolerance to salinity of soil:
| Rating |
Definition |
| tolerant |
leaves uninjured when the soil’s salinity, as indicated by ECe, is 8 to10 dS/m |
| moderately tolerant |
leaves uninjured with ECe of 6 to 8 dS/m |
| moderately sensitive |
leaves sustain minimal to recognizable injuries when the soil’s ECe reaches 3 to 6 dS/m |
| sensitive |
leaves sustain minimal, if any, recognizable injuries with ECe of less than 3 dS/m |
Source 2’s ratings for tolerance to saline water spray:
| Rating |
Definition |
| highly tolerant |
no symptoms of salt-related stress observed when irrigated via overhead sprinklers with water containing 600 mg/L of sodium and 900 mg/L of chloride |
| tolerant |
no symptoms of salinity-induced stress observed when irrigated via overhead sprinklers with water containing 200 mg/L of sodium and 400 mg/L of chloride |
| moderately tolerant |
symptoms of salinity-induced stress observed on less than 10% of leaves when irrigated via overhead sprinklers with water containing 200 mg/L of sodium and 400 mg/L of chloride |
| sensitive |
symptoms of salinity-induced stress observed on more than 20% of leaves when irrigated via overhead sprinklers with water containing 200 mg/L of sodium and 400 mg/L of chloride |
Source 2’s ratings for tolerance to salinity of soil:
| Rating |
Definition |
| highly tolerant |
no symptoms of salt-related stress develop, even when the soil’s salinity, as indicated by ECe, exceeds 6 dS/m |
| tolerant |
no symptoms of salt-related stress develop with ECe of 4 to 6 dS/m |
| moderately tolerant |
no symptoms of salt-related stress develop with ECe of 2 to 4 dS/m |
| sensitive |
no symptoms of salt-related stress develop with ECe of less than 2 dS/m |