How to tell if the Chinese rose is damaged by chemicals?
The editor brings you the introduction of how to distinguish whether the Chinese rose is damaged by chemicals in green plants and flowers. If there is any mistake, please correct it!
: How to tell if the Chinese rose is damaged by chemicals? Do these 4 points to promote growth in time!
In autumn, Chinese roses are highly prone to pest damage. After applying pesticides to the roses, many rose enthusiasts often find that their roses show some abnormal conditions. This is actually caused by the high concentration of the chemicals. Today, I will focus on introducing some of the manifestations of chemical damage, as well as methods to prevent and mitigate chemical damage, hoping it will be helpful to you.
I. Common Manifestations of Chemical Damage
The manifestations of chemical damage to Chinese roses vary depending on the degree of damage. There are also differences between the manifestations on new leaves and old leaves.
1. New leaves show spots, deformities, black tips
When Chinese roses are in a rapid growth period, if the concentration of the pesticide is too high when applied, it may easily show that the new leaves are deformed, or have uneven color spots, sometimes the tender leaves' tips and edges may turn white, or even wither or turn black.
This kind of fertilizer damage is relatively minor, usually only showing on the new leaves of the top bud, while no changes can be seen on the old leaves. This slight chemical damage will gradually return to normal as the Chinese rose grows.
2. Old leaves show dry tips
How to tell if the Chinese rose is damaged by chemicals?
If it is in summer or the beginning of autumn, the tender leaves of Chinese roses grow rapidly and mature quickly. When the concentration of the pesticide is too high, most of them will show dryness and yellowing in the intercellular and marginal parts of the leaves, or scattered dead spots on the leaves.
When the chemical damage is slight, there will be less dry tips on the leaves. If it is severe, there will be a large area of leaf dryness.
There is also a more extreme type of chemical damage, which is caused by the excessive concentration of the chemical or the use of some emulsified oils in hot weather, leading to severe burns. It will directly show as large areas of leaf dehydration and withering.
II. How to Prevent Chemical Damage