Are such rose leaves harmful to thrips?
In the 14th phase of the horticultural lecture hall, the symptoms of rose leaves are: are rose thrips harmful? Let's take a look at what the leaves of the thrips look like.
This issue is the 14th issue of the horticultural lecture hall. Today I will talk to you about a disease of next month's rose. Thrips, thrips belong to rose pests, but because they are very small. So it's hard to find, but thrips are small but harmful. So what do the leaves of thrips look like? Go into the gardening hall and talk to everyone.
Q: how does thrips harm the leaves of rose?
Answer: after the thrips absorb the juice of the leaves, it will cause rose leaves to be poisoned. It's not obvious at first, but you'll find it when the leaves grow up slowly. The leaves curled + thickened, resulting in low photosynthetic efficiency and affecting the growth of rose.
Q: what are the symptoms of the leaves after the thistle is injured?
A:
Send a roll
Thickening
Deformity
A: since thrips are so harmful, what kind of medicine should be used?
Answer: the prevention of rose thrips can be divided into two kinds, let's take a look.
(1) physical prevention
The armyworm board is used to eliminate it in the form of temptation. At present, it is also the safest way to do it. If you like, you can buy a post and put it on the edge of the rose.
Simple point with a large roll of transparent glue can also be done, and then spray some sugar up, the effect is good.
(2) Pesticide insecticide
Common pesticides, acetamiprid, imidacloprid, etc., diluted by 1000 times, can be used once every 5 days. If it is a dilution-free pesticide, it can be sprayed once every 2 days. If it is a regular pesticide, it is recommended that it be sprayed once every 5-7 days.
Q: what should I do with the leaves damaged by thrips after they are drugged?
A: the leaves damaged by thrips have basically lost their photosynthesis. We can use scissors to trim, and then cooperate with the fertilizer to promote root repair, so that the rose can sprout quickly, so that the loss can be recovered to the maximum extent.
Dilute 500 times, spray. Why use a restored nutrient solution? Because the leaves after thistle injury have poor absorptive capacity, if you do not quickly let the rose produce new leaves, this harm may affect the very long, for later management, I suggest using good fertilizer conditioning.
Q: how to manage the rose damaged by thrips after the beginning of autumn?
A: if you want such a rose to blossom again in autumn, you have to work hard on management. Said earlier to use a good nutrient solution conditioning, and then we also need to choose a good soil, so that with the nutrient solution can achieve good results.
Root promotion makes the root system of rose develop, absorb more nutrients, and naturally grow faster. Now is the best time to enter the rose, if there is a small balcony. I will not hesitate to choose a fruit juice, this variety blossoms, is a dwarf shrub, very suitable for raising on the balcony.
All right, a little knowledge about rose thrips. If you think it's helpful, please give me a like. I'll see you next time.
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