| 5475219 |
excessive water uptake |
|
Trunk splitting caused by excessive water uptake. |
| 5475252 |
iron deficiency |
|
Severe Fe deficiency on on Caryota mitis. |
| 5475561 |
iron deficiency |
|
Iron deficiency due to poor soil aeration caused by deep planting. |
| 5475562 |
iron deficiency |
|
Iron deficiency due to poor soil aeration. |
| 5475220 |
copper toxicity |
|
Foliar injury caused by a copper sulfate foliar spray on Acoelorrhaphe wrightii seedling. |
| 5475221 |
copper toxicity |
|
Foliar injury on Acoelorrhaphe wrightii caused by a copper sulfate spray (right). Untreated leaf on the left. |
| 5475311 |
high soluble salts |
|
Leaf tip necrosis caused by high soil soluble salts on Syagrus romanzoffiana seedling. |
| 5475327 |
water stress |
|
Collapsed and twisted trunk of water-stressed Roystonea regia. |
| 5475305 |
powerline decline |
|
Powerline decline on queen palm showing chlorotic and necrotic leaf tips. |
| 5475326 |
water stress |
|
Leaf tip necrosis caused by water stress in Geonoma sp. |
| 5475304 |
powerline decline |
|
Powerline decline of coconut. Note chlorotic and necrotic leaf tips. |
| 5475329 |
wind |
|
Broken leaves in Bismarckia nobilis caused by high winds. |
| 5475328 |
wind |
|
Tattered leaflets in Roystonea regia caused by high winds. |
| 5475295 |
potassium deficiency |
|
Late stage potassium deficiency in coconut palm showing chlorotic, necrotic new leaves and tapered trunk. This palm died shortly after this photo was taken. |
| 5475303 |
potassium deficiency |
|
Severely potassium-deficient Sabal palmetto. |
| 5475302 |
potassium deficiency |
|
Potassium-deficient spindle palm showing increasing severity with leaf age. |
| 5475301 |
potassium deficiency |
|
Potassium deficient older leaf of areca palm showing increasing severity towards the leaf tip. |
| 5475300 |
potassium deficiency |
|
Potassium deficiency symptoms on older leaf of Chamaerops humilis. Note the translucent orange and necrotic spotting. |
| 5475299 |
potassium deficiency |
|
Potassium deficiency symptoms on older leaves of fishtail palm. |
| 5475298 |
potassium deficiency |
|
Potassium-deficient older leaves of pygmy date palm. |
| 5475297 |
potassium deficiency |
|
Potassium-deficient older leaf of Livistona chinensis showing leaf discoloration and leaflet tip necrosis. |
| 5475296 |
potassium deficiency |
|
Necrotic frizzled leaflets on older leaf of a potassium-deficient Dypsis cabadae. |
| 5475294 |
potassium deficiency |
|
Potassium deficient older leaf of Dictyosperma album showing translucent yellow-orange spotting. |
| 5475258 |
lightning |
|
Sudden crown collapse caused by lightning. |
| 5475285 |
nitrogen deficiency |
|
Severe nitrogen deficiency in Veitchia sp. (far left). The palm on the right has died from chronic N deficiency. |
| 5475284 |
nitrogen deficiency |
|
Nitrogen deficiency. Note the golden yellow petioles and rachides and light green colored leaflets. |
| 5475271 |
manganese deficiency |
|
Severe Mn deficiency symptoms on Syagrus romanzoffiana with only necrotic petiole stubs emerging. |
| 5475270 |
manganese deficiency |
|
Severe Mn deficiency symptoms on coconut. |
| 5475269 |
manganese deficiency |
|
Manganese-deficient new leaf of Archontophoenix alexandrae. Note that symptoms are most severe towards the leaf base and least so towards the tip. |
| 5475267 |
manganese deficiency |
|
Manganese deficiency symptoms on Phoenix roebelenii. |
| 5475268 |
manganese deficiency |
|
Manganese deficiency on Roystonea regia. Note that frizzling is most severe towards the base of the leaves. |
| 5475266 |
manganese deficiency |
|
Mangenese-deficient new leaf of Rhapis excelsa. |
| 5475265 |
manganese deficiency |
|
Close-up of Mn-deficient leaf of Phoenix roebelenii showing longitudinal necrotic streaking. |
| 5475264 |
manganese deficiency |
|
Close-up of leaflets of Mn-deficient Archontophoenix alexandrae leaf. Note the longitudinal necrotic streaking. |
| 5475262 |
magnesium deficiency |
|
Older leaf of Phoenix canariensis showing Mg deficiency symptoms towards the leaf base and K deficiency symptoms towards the leaf tip. |
| 5475263 |
magnesium deficiency |
|
Magnesium-deficient older leaf of Livistona rotundifolia showing broad yellow band around entire leaf as well as a yellow band along margins of single leaf segments in upper left. |
| 5475261 |
magnesium deficiency |
|
Magnesium and potassium deficiency symptoms on Phoenix canariensis. The broad yellow-banded mid canopy leaves show Mg deficiency, while the oldest leaves show leaflet tip necrosis (K deficiency). |
| 5475260 |
magnesium deficiency |
|
Magnesium deficiency symptoms. Note the broad yellow bands along the outer margins of the leaves, but distinctly green central portions of the leaves. |
| 5475259 |
lightning |
|
Collapse of twelve trees of Veitchia mcdanielsii and Wodyetia bifurcata due to a single lightning strike. |
| 5475257 |
lightning |
|
Trunk splitting in Phoenix canariensis caused by lightning. |
| 5475254 |
iron deficiency |
|
Mild Fe deficiency symptoms on leaflets of new leaves (two upper leaflets) and symptom-free older leaves (two lower leaflets). |
| 5475253 |
iron deficiency |
|
Severe Fe deficiency on queen palm seedling (left). Normal palm on right for comparision. |
| 5475251 |
iron deficiency |
|
Iron-deficient Rhapis excelsa on left with healthy palms on right. |
| 5475256 |
lightning |
|
Trunk bleeding caused by lightning. |
| 5475217 |
cold injury (low temperature) |
|
Basal spear leaf rot caused by secondary bacteria and fungi following freeze damage to the base of the spear leaf. |
| 5475218 |
cold injury (low temperature) |
|
Wilting of living leaf tissue of coconut following a freeze. |
| 5475216 |
cold injury (low temperature) |
|
Chilling injury on coconut showing the distribution of necrosis within and among leaves. |
| 5475215 |
cold injury (low temperature) |
|
Chilling injury on Geonoma sp. showing foliar necrosis. |
| 5475212 |
boron deficiency |
|
Zigzag shaped leaflet tips ("hookleaf") in coconut is caused by a mild and temporary boron deficiency. |
| 5475211 |
boron deficiency |
|
Crumpled ("accordion-leaf") young leaves caused by a chronic and severe boron deficiency. Note that the youngest leaf is emerging normally, indicating that this palm is recovering. |
| 5475210 |
boron deficiency |
|
Multiple unopened spear leaves in Phoenix sylvestris caused by chronic boron deficiency. |
| 5475209 |
boron deficiency |
|
Severe epinasty in Roystonea regia caused by chronic boron deficiency. |
| 5475208 |
boron deficiency |
|
Trunk bending caused by boron deficiency. |
| 5475207 |
boron deficiency |
|
Leaf truncation in coconut caused by periodic temporary boron deficiency. This pattern was the result of heavy rainfall events approximately every 10 days during the development of the leaf in the center. |
| 5475206 |
boron deficiency |
|
Premature fruit drop in coconut caused by boron deficiency. |
| 5475205 |
boron deficiency |
|
Crumpled new leaves ("accordion-leaf") on Heterospathe elata caused by severe boron deficiency. |
| 5475204 |
boron deficiency |
|
Transverse puckering in queen palm, a symptom of mild boron deficiency. |
| 5475203 |
boron deficiency |
|
Branching in queen palm caused by boron deficiency. |
| 5475202 |
boron deficiency |
|
New leaves growing downward in caused by boron deficiency. |
| 5475201 |
boron deficiency |
|
Leaf tip devoid of leaflets, a symptom of boron deficiency. |
| 5475200 |
boron deficiency |
|
Inflorescence necrosis due to boron deficiency. |
| 5475199 |
boron deficiency |
|
Corrugated leaf of queen palm caused by boron deficiency. |
