Salinity Management Guide
Problems involving trees, shrubs, and ground covers
Plant damage resulting from poor aeration and drainage
Photo courtesy of Clark. |
Symptoms: Decline of acacia tree surrounded by pavement. Diagnosis: This tree is suffering from aeration deficit. The cause is most likely a reduced rate of oxygen diffusion to its roots as a result of the impermeable surface cover of asphalt and concrete. Solutions: Replace the tree with one that can tolerate pavement cover, such as Pinus spp. |
Photo courtesy of Larry Costello. |
Symptoms: Decline of Aleppo pine at bottom of the slope Diagnosis: This tree is suffering from aeration deficit due to placement of about 2 feet of fill soil at its base. Note the tree upslope is not suffering aeration deficit. Solutions: Remove fill soil around its base or replant a tree on the current surface. |
Photo courtesy of Perry. |
Symptoms: Chlorotic and declining shrubs. Diagnosis: The plants are suffering from aeration deficit, resulting from poor soil drainage or excess irrigation. Solutions: Reduce irrigation. If the soil is sodium-affected, apply a calcium amendment, such as gypsum, to reclaim it. |
Photo courtesy of Larry Costello. |
Symptoms: Plant species are declining or have died and been removed. Diagnosis: The presence of wet soil and standing water suggests that some of the plants are suffering from aeration deficit. Solutions: A number of species appear to be more tolerant to excess moisture. The bare spots or declining plants could be replaced by these more tolerant species. |
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