Rose Disease and Pest Control: Ineffectiveness of Medication
Today's focus is on the introduction of the ineffectiveness of rose disease and pest control and medication in the aspect of green plants and flowers. Keep reading for more information!
Autumn is a period with a higher incidence of rose diseases and pests. Among the friends who helped fill out the rose cultivation course survey questionnaire the other day, many also mentioned that they find it difficult to treat rose diseases and pests.
I received a consultation from a friend yesterday. He asked about the phenomenon shown in the photo below, where his rose did not improve even after spraying with dimethoate.
From the photo, it can be seen that this rose has gray mold disease. There is a more detailed explanation of the symptoms of various rose diseases in the rose cultivation series course. I won't elaborate on that today.
After identifying the disease and pest, the next step is to choose a treatment plan. Why didn't our friend see any effect after spraying the medicine?
Let's first understand the use of "dimethoate." Dimethoate is an efficient broad-spectrum insecticide and acaricide with contact and systemic action. Simply put, dimethoate is an insecticide. However, the rose has gray mold disease.
Some friends may still not understand why gray mold disease cannot be treated with dimethoate. Here, I want to emphasize that it is essential to distinguish between insect pests and diseases because the medication for each is completely different. Insect pests refer to infestations, which require insecticides, while the treatment of diseases requires fungicides.
Rose Disease and Pest Control: Ineffectiveness of Medication
Therefore, using dimethoate to treat gray mold disease will not work as expected. To treat gray mold disease, one must first use fungicides, such as mancozeb, carbendazim, and polyoxin B.
I've also encountered friends asking why their roses, affected by black spot disease, did not improve after spraying with blue mancozeb.
Here, I need to explain the difference between preventive and therapeutic medications. Blue mancozeb is a commonly used medicine for roses, mainly used for prevention before the disease occurs. On the other hand, myclobutanil and flusilazole are therapeutic fungicides, so they should be distinguished when using them.
It is recommended to use two fungicides together when treating rose diseases to enhance the fungicidal effect and speed up the healing process. In fact, the onset of rose diseases and pests follows a certain pattern. The Green Plant Enthusiast Network will provide a comprehensive preventive and treatment plan based on the pattern of disease onset in the upcoming rose series course, eliminating rose diseases and pests at the source.
For more practical experience and techniques on home gardening, follow the public account: Green Plant Enthusiast Garden (ilanyao).
This article shares detailed content about the ineffectiveness of rose disease and pest control and medication, and efforts wasted due to incorrect methods. I hope it can be helpful to you!