Dieback (Phytopthera) is caused by fungal disease that creates root rot and prevents plants thriving.
Dieback (Phytopthera) causes root rot in susceptible plants, thereby limiting or stopping the uptake of water and nutrients. Symptoms include yellowing of foliage, loss of leaves, canopy thinning and dead branches.
The pathogen is able to survive within plant roots during the dry soil conditions commonly experienced during the summer months.
Kauri dieback is a phytopthera disease that is affecting and killing kauri trees in New Zealand and great efforts are being made to find how this disease is spread.
Buxus blight dieback is a disease of buxus (box) hedging plants and is spreading rapidly in parts of the North Island of New Zealand. It is not caused by phytopthera and is better described as buxus blight.
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