Attention balcony party, the peak period of rose red spider outbreak
The editor answers related knowledge about the peak period of rose red spider outbreak for netizens, the specific introduction is as follows:
This year's weather is really intoxicating, it was always rainy before and there was no sunshine, and recently it has been sunny and no rain.
For our roses, they are most afraid of rainy days when the buds are pending, high humidity in the air can easily cause rose bud downy mildew, leading to the withering of the rose buds before they can open.
After the flowering period, when roses need rainwater, it is relatively dry, and dry air is very likely to cause rose red spider. The other day, while pruning roses, I found that several roses had red spider infestation.
This rose red spider is not as easy to control as aphids. For rose aphids, we just need to spray with lidane, but for rose red spider, the effect of these ordinary insecticides is very small, or even completely ineffective.
Introduction to Red Spider: To treat red spider, let's first get to know this amazing insect.
The scientific name of red spider is leaf mite, which is very small, with adults only 0.42-0.52 millimeters in size, usually red in color, often with black long spots on both sides of the insect's back.
Red spider is harmful to many crops and has a super reproductive ability.
Attention balcony party, the peak period of rose red spider outbreak
Don't look at this small insect, but the maternal love is great. Red spider lays eggs once a year, and can lay 100 eggs at a time. After laying eggs, the female spider will guard day and night, and after the eggs hatch, the female spider will use them as the first food for her children, willing to sacrifice herself for her children. For this point, green plant enthusiasts have to praise the red spider.
But great as it is, it still needs to kill the red spider to protect our roses.
The reproduction speed of red spider is extremely fast, in high temperature, it can reproduce a generation in 7 days, this speed is very可怕, but the red spider is very small, often when we find it, it is already quite serious, so in daily breeding, we need to pay more attention.
Characteristics of roses infected with red spider: If your roses are in a relatively dry environment, you should be careful, the red spider may find you. When the air is very dry, you can often spray water on the roses to increase the humidity, which can effectively prevent red spider.
Red spider first appears on the old leaves of roses, usually when watering and fertilizing, you should pay attention to whether the leaves of roses are dry, yellow, or have chlorotic pinhole-like spots.
In the early stage of red spider, careful observation will find that there are local chlorotic spots on the front of the rose leaves, and the spots are densely arranged in a pinhole shape.