Rose infected with powdery mildew these methods to help
Powdery mildew is a high incidence of rose, according to incomplete statistics, the incidence of rose powdery mildew is as high as more than 50%, which is obviously a shocking data, that is, an average of half of the roses will be infected with powdery mildew. A good basin of healthy rose bought back, but stained with a layer of "white powder", is indeed a very disturbing thing.
When you get powdery mildew in that month, you will see leaves, buds and even pedicels, branches and other parts covered with a layer of white powder. Unfortunately, this is not the same thing that can make the rose more beautiful, but the bacteria that make the rose sick.
This pathogen often begins to appear in winter and is not obvious at first. when the temperature gets warmer in spring, the bacteria begin to multiply in large numbers, and the white powdery area begins to spread gradually. if the disease continues into summer, it has a tendency to harm the whole plant. After the plant is infected, the leaves are easy to curl up and then fall off, while the infected buds can not bloom.
The main causes of powdery mildew of rose are as follows: poor ventilation; overdense plants; warm and humid environment; too much nitrogen fertilizer and over-nutrition of leaves. Planting rose to prevent the occurrence of powdery mildew, put the rose in a ventilated place, if put indoors, pay attention to open the window to breathe.
If the branches and leaves are too dense and easy to be poorly ventilated, which is conducive to the breeding of more bacteria, they should be pruned in time, and some unhealthy branches and leaves can be trimmed in winter. In spring and other weather with high humidity, pay attention to keep the branches and leaves dry. Fertilization should control the amount of nitrogen fertilizer, and more phosphorus and potassium fertilizer can be applied in spring, which is beneficial to root growth and enhance resistance.
Carbendazim spray can be used every half a month in spring for prevention. If infected, the therapeutic effect of carbendazim is limited. If you have contracted the disease, and only in a small area, you can prune the infected area and spray the whole plant with DuPont Fuxing (or alternately with carbendazim) in the ratio of 1pur1000 with water. The spraying time should be in the afternoon when the sun is better, which is more conducive to sterilization.
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Solve jasmine light does not blossom how to do?
Some friends report that my jasmine hasn't blossomed for a long time, what should I do? There are even friends who suspect that it is male, but in fact there is no distinction between male and female jasmine. Watching other people's jasmine flowers bloom one after another, I feel quite unhappy.
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After the green pineapple drank this water, the green leaves glowed wildly.
Amoy rice water, Amoy rice water is fermented in a plastic bottle for half a month, and then directly mixed with water to water green pineapple. After this watering, there is no need to apply fertilizer. The fermented Amoy rice water is slightly acidic and suitable for most flowers and plants. Green pineapple is used in Amoy.
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