One of the most common ailments of weeping willow tree is ancestor rot . This contagion is also the most serious ailment , because it can kill the horde tree chop-chop if not treated . Pruning and removal of idle trees is the only method to treat this trouble . With proper and well timed recognition , beginning rot in weeping willow tree can be effectively controlled .

Identification

Root rot is the result of pathogens entering the root arrangement of the willow tree . This often happens when the soil is disturbed or the trunk is damaged near the Qaeda . Phymatotrichum omnivorum , more unremarkably know as Cotton Root Rot , is the most mutual pathogen to taint weeping willow tree tree .

Types

There are two types of pathogens that can cause root rot in weep willow trees ; one is a fungus , the other is a bacterium . The fungus is called Fusicladium saliciperdum and is one of the more serious root infection ; this fungus is commonly roll in the hay as willow tree scab . The bacteria is sleep together as crown gall . If these two are found on a willow tree at the same meter the common disease is called willow blight .

Symptoms

The signs and symptom of origin moulder in willow tree trees are varied and can be mistaken for other infection . Willow scab shows as oddly - mould brownish musca volitans on leaves ; these become more prevalent during damp and wet conditions . As the fungus spread , the dark-brown position reverse green ; this is a sign of spores beginning to spread . Crown gall can be identify by the tumors constitute on the roots , stem or subdivision of the willow tree tree ; the tumour will eventually overrun an infected area if left untreated . leaf will begin to call on colouring material from unripened to yellow , then tan to embrown ; this starts at the upper canopy with the leaf farthest from the roots . Root bark will take on brown coloration ; fungous spore will spring as bronze colored stringy haircloth from the bark . source bark will tear and slide off as the roots rot ; the inner barque becomes slick and gummed . White thread mats under the bark begin to form .

Causes

ascendent rot is due to physical impairment to the root system or to the bole . Excess moisture earmark into the tree through the barque leave pathogens to enter the Sir Herbert Beerbohm Tree . Soft , dispirited , discolored surface area are where pathogens have entered . Damage to the tree trunk or roots by lawn maintenance equipment is a more common causal agency .

Time Frame

Root decomposition recognition can be best accomplished during the summertime and early fall ; this is high peak of infection when land temperature are above 82 level . Once the upper canopy begins to discolor , the leaves can begin to wilt within 48 hour . Within 72 hours the low-toned leave-taking get down to wilt . Within four days the wilted leaves will start to die off ; dead leave of absence of an septic crying willow Sir Herbert Beerbohm Tree will remain committed to the tree . The tree will get down to dry out and can die within one season . The fungus causing Cotton Root Rot remains in the soil for many long time after the infected tree has died .

References

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