Brown spots on magnolia leaves
P:Brown spots appeared on the leaves of my beloved magnolia. Is it a fungal disease? If so, how to combat it?
O:Large light brown or reddish brown spots are the result of infection with pathogenic fungi. Heavily infected leaves become deformed. Infected leaves must be collected and destroyed, and the trees should be sprayed twice, every 14 days.
Stains on birch leaves
P:I have a few 'Joungia' birches which I grow in a house outside the city, in weak and sandy soil. Every year (from early summer) the trees turn yellow and lose their leaves massively. I would like to add that I watered plants abundantly during drought. Is aphid activity the cause of stains on birch leaves, or is it some kind of fungal disease?
O:There are many reasons for the formation of stains on birch leaves, including the use of an inappropriate substrate reaction, soil salinity, high temperatures, air pollution and infection caused by various fungal pathogens.The latter may also be a secondary symptom of non-infectious causes.
In case of the appearance of the first disease spots, the plant should be sprayed with fungicides.You can also introduce non-chemical preparations into the spraying.Spraying should be repeated several times (every 7-10 days). Infested must be removed and burned.
Peach leaf curl
P:I planted a peach last fall. Now its leaves turn red and wrinkled. What is this disease and how to fight it?
O:It is the most dangerous fungal disease that attacks peaches - peach leaf curl. The fight against this disease should be started in the leafless period. Now, during the growing season, all that remains is to collect the diseased leaves and burn them.
