Thrips Control Methods
This article explains the manifestation of thrips pest and the key to achieving beautiful autumn roses is to control thrips. What to do with persistent thrips is a topic of discussion among flower lovers, and the specific content is as follows:
Recently, many flower friends have found that their roses are not growing well, with leaf deformation and seedling stiffness, but no visible pests or diseases. In fact, it is the damage caused by thrips. Thrips can be said to be the barrier to the autumn bloom of roses. Let's first understand the symptoms of thrips pest, and then move on to the management.
Manifestation of Thrips Pest
To control thrips, one must first be able to distinguish what symptoms are the manifestation of thrips pest. There are several common manifestations of thrips pest.
1. -- New leaves malformed with black leaf tips --
Thrips love to eat the tender branches and leaves of roses, usually causing the most severe damage to the new branches of roses. The symptoms include smaller, twisted, and malformed new leaves, with brown or black scars on the leaf tips. Thrips not only damage the new buds of roses, but also do not spare the flower buds, often causing brown scars all over the flower buds and preventing them from growing.
If the leaves have already matured, thrips can cause the new leaves of roses to become uneven and have brown scars, with some leaf tips malformed or black and withered. The flowers of roses are often malformed as well.
2. -- Scars on old leaves --
If the roses have not grown new buds for a long time, thrips will have no choice but to eat old leaves, causing brown scars on them. In severe cases, the leaves become uneven and look very old and lack luster. The new buds that do not grow will also turn black and wither.
The above are relatively serious damages caused by thrips. In the early stage of thrips infestation, which is not yet severe, there may only be slight malformation of the new leaves, which look less fresh and have a dry feeling. This indicates the presence of thrips pest and requires timely treatment. The damage caused by thrips is irreversible, so the earlier the treatment, the better.
Thrips Control Methods
The control of thrips is relatively simple. Commonly used drugs include: dinotefuran, acetamiprid, high-efficiency pyrethrin, phoxim, etc.
For routine prevention, it is recommended to alternate between two types of drugs, spraying once every 15 days. When thrips pest is found, spray insecticide in the evening for 3 consecutive days, which can eliminate them more thoroughly. For roses cultivated on balconies, hanging yellow boards frequently can also be effective.
If the same drug is used too often, thrips may develop resistance, and the effect of insecticides will be reduced. If persistent thrips pest occurs, it is recommended to spray together matrine and dinotefuran for better results.
The above[] introduces the manifestation of thrips pest and the complete introduction of thrips control methods, for everyone to learn and understand!