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Pine-pine gall rust, also known as western gall rust, is a fungal disease of pine trees. It is caused by Endocronartium harknessii (asexual name is Peridermium harknessii ), an autoecious , endocyclic , rust fungus that grows in the vascular cambium of the host. [ 1 ]
Marchalina hellenica is a scale insect that lives in the eastern Mediterranean region, mainly in Greece and Turkey.It is an invasive species in Melbourne, Australia. [1] It lives by sucking the sap of pine trees, mainly the Turkish Pine (Pinus brutia) and, to smaller extent, Aleppo Pine (Pinus halepensis), Scots Pine (Pinus sylvestris) and Stone Pine (Pinus pinea).
Scots pine, red pine, Mugo pine, Ponderosa pine, and Austrian pine are especially susceptible. Some spruce, fir, and cedar species are also vulnerable to infection. [ 3 ] The disease can infect trees of all ages, though trees that are physiologically stressed through water or nutrient deficiencies or wounded via extreme weather or insect damage ...
Many pine trees turn yellow this time of year because of normal “needle drop” on the inside branches
Apart from structural wood preservation measures, there are a number of different chemical preservatives and processes (also known as timber treatment, lumber treatment or pressure treatment) that can extend the life of wood, timber, and their associated products, including engineered wood. These generally increase the durability and resistance ...
Identify and Treat Pests If your orchid is struggling, check for signs of pests. "Pests like scale or mealybugs suck the energy out of your orchid," says Hancock.
Often sold as living Christmas trees, Norfolk Island pines can last for years well beyond the holidays with the right care.
Rust diseases are very hard to treat. Fungicides, such as Mancozeb, may help but may never eradicate the disease. [citation needed] Some organic preventative solutions are available and sulphur powder is known to stop spore germination. High standards of hygiene, good soil drainage, and careful watering may minimize problems. Any appearance of ...