Pest control: how to control jasmine diseases and insect pests?
The diseases of jasmine during the growth period are: Jasmine stem rot, white silk disease; insect pests are: jasmine leaf borer, shell insects, cinnabar leaf e.
(1) stem rot of jasmine. The disease occurs at the base of the stem, and the initial spot is brown and watery. The plaque expands longitudinally into stripes. The edge is dark brown, the inside is grayish brown, and the tissue of the disease class in the later stage is decayed and split longitudinally, and black granules appear. The disease will occur throughout the year during the greenhouse maintenance period, especially in early spring. Outdoor maintenance also occurs from August to September. It is beneficial to the occurrence of diseases under the condition of high temperature and humidity.
Control methods: ① flowers on the pot, can be sprayed with 0.2-0.4 degrees of stone-sulfur mixture; ② can use 70% of Topol 600-1000 times solution to smear disease spots or branches, or with Fumishuang 500 times solution, the effect is good.
(2) White silk disease. The harm and control methods of white silk disease can be seen in Magnolia white silk disease.
(3) Jasmine leaf borer. Jasmine leaf borer is one of the main pests of Rongli. It eats the leaves, buds, twigs and shoots of jasmine with its larvae. The bark of branchlets withered after being eaten, and the seedlings died after being killed, which seriously affected the growth and flowering of jasmine.
Control methods: ① winter or early spring, remove the withered branches on the plant and leaves on the ground, concentrated burning; ⑧ properly thinning leaves to facilitate ventilation; timely manual capture and kill eggs, larvae and pupae on the leaves. During the growth of jasmine, ② can be sprayed with 6000 times of 50% trichlorfon wettable powder, which has a good control effect.
(4) cinnabar Ye. Cinnabar leaf cochlea is also known as cotton red spider. It can harm many flowers and many greenhouse plants. Jasmine is one of the common victimized flowers. The leaves of the injured flowers showed small yellow-white spots at first, then gradually turned red and extended to the whole leaf, causing the leaves to curl, withered and yellow. This cochlea develops rapidly and does serious harm, affecting the growth and flowering of flowers and trees.
Control methods: weeding and cleaning the flower bed in winter and irrigation in the nursery can eliminate the source of overwintering insects. In the red spider harm period, you can use 1500-2000 times of trichloropropanol EC (1500-2000 times of trichlorohydrin wettable powder, or 1000-1500 times of omethoate) spray control, spray once every 7 days, spray 2-3 times, the effect is better. When spraying, you should spray on the back of the leaves, and pay attention to spraying the inner branches and leaves of the middle and lower parts of the plant.
- Prev
Cultivation and conservation of African jasmine
African jasmine is easy to adapt to unfamiliar environment and can be planted in courtyards and balconies. African jasmine branches as emerald, leaves shiny, flowers slightly fragrant, elegant flowers, each five-petal, umbrella-shaped, clustered at the top of the flower branch. The flowering period is very long, blooming in winter and summer, and blooming most brightly in spring and summer. Early in the morning or dusk, if there is no faint fragrance, refreshing. African jasmine is an evergreen (climbing) shrub or small tree of Brucaceae originating in southern China and Southeast Asia. Formerly known as Cinnamomum chinense (see Atlas of higher plants in China
- Next
Cultivation and maintenance of Jasmine Flower
Jasmine, also known as Mali and Camellia, is a perennial evergreen shrub of the genus Jasmine of Oleaceae. Native to India and other countries, there are cultivation in the north and south of our country. The jasmine plant is exquisite and beautiful, the leaves are emerald and green, the flowers are white and fragrant, and it is known as the first fragrance of fragrant flowers. Its fragrance is clear but not light, strong but not strong, the flowering period is long, and it blooms most in summer. A pot of fragrance floats all over the room on the courtyard windowsill and balcony, which is the most common fragrant potted flowers and trees. Biological characteristics of jasmine flowers like warm, humid and sunny environment, afraid of freezing and drought
Related
- Fuxing push coffee new agricultural production and marketing class: lack of small-scale processing plants
- Jujube rice field leisure farm deep ploughing Yilan for five years to create a space for organic food and play
- Nongyu Farm-A trial of organic papaya for brave women with advanced technology
- Four points for attention in the prevention and control of diseases and insect pests of edible fungi
- How to add nutrient solution to Edible Fungi
- Is there any good way to control edible fungus mites?
- Open Inoculation Technology of Edible Fungi
- Is there any clever way to use fertilizer for edible fungus in winter?
- What agents are used to kill the pathogens of edible fungi in the mushroom shed?
- Rapid drying of Edible Fungi