Prevention and control of several diseases of Phalaenopsis
Anthrax occurs seriously in high temperature and humidity, forming brown-black round spots and gradually expanding outward. The occurrence of the disease can be controlled by uniform spraying with 800 times of Prike solution, once every 5 days, for 3 consecutive times.
The symptoms of soft rot are leaf base rot, corm rot and mildew bacterial smell. Methods of prevention and treatment: agricultural streptomycin sulfate was sprayed at the initial stage of the disease, once every 7 days, for a total of 2 times.
The symptoms of Sclerotinia sclerotiorum first occur from the base of the leaf, the spot is light brown, watery, rotten, and can be extended to the whole leaf. In the later stage, small black round or nearly round sclerotia were produced under the epidermis. Control method: the diseased plant was treated with 1500 times solution of carbendazim wettable powder.
Slugs and snails are addicted to water-rich and tender parts, making plants form irregular gaps and holes, and there are white mucus bands where they crawl. Control method: in the larval stage, 2 bags of Mida were spread evenly in each shed, the effect was excellent, and the trapping rate was more than 98%. Or choose 6% snail enemy granules 500 grams, mixed with dry sand 15 kg evenly scattered on the bed surface. Or spread 10 to 20 kilograms of quicklime evenly in each shed.
Red spider control method: use 20% dicofol 800x liquid spray, once every 5 days, even spray 2x 3 times, the effect is better; if combined with nisolang 1500 times liquid, the effect is better; propargite 1000 times liquid effect is also good; or 25 times Leba wettable powder 1000 times 2000 times liquid spray. During the occurrence period of pests, the mixture of 2000-3000 times of 20% methanesulfite EC can be evenly sprayed.
The scale insects were sprayed with omethoate, phoxim (or hypertonic phoxim), 1605 EC and Nongbeime 800-1000 times, which showed that the effect was the best in the early stage of larval occurrence.
Root disease
The main results are as follows: (1) the root group grows on the plant material. Reason: improper planting method.
(2) the root group grows out of the basin. Reason: there is no change of basin.
(3) the root grows upward, even beyond the edge of the basin. Reason: too much watering and too dense planting material.
(4) the roots withered, the upper layer was more than the lower layer, and the stems and leaves shrunk and withered. Reason: excessive fertilization or too much salt in water produces saline-alkali damage.
- Prev
Four reasons for the failure of Phalaenopsis family cultivation
1. Watering too frequently: friends who cultivate Phalaenopsis are always worried about the lack of water, regardless of whether the cultivation medium is dry or not, watering every day, resulting in serious root rot. 2. The temperature is too low: usually the flowering plants of Phalaenopsis are on the market in early spring, and they are generally appreciated in the living room after buying them home. Although the daily temperature in these places is enough, the night temperature is a little too low. On the other hand, most of the professionally cultivated orchids are in well-equipped greenhouses. By contrast, the temperature and humidity at home are not enough, so the plants tend to grow.
- Next
The method of changing Phalaenopsis pot
The substrate for planting Phalaenopsis requires good drainage and slightly water conservation, as well as ventilation and ventilation. Commonly used are tree fern root, water moss, bark, charcoal, coconut capsid and ceramsite and so on. No matter what kind of substrate you use, when the Phalaenopsis plant is too large and the air roots wind around each other, it is necessary to change the basin. The basin change should be carried out in the summer of the growing period. the method is to first pour out the plant, remove the old cultivation substrate, cut off the aging and decaying air roots, and then put a layer of charcoal on the bottom of the new basin, put in the plant, fill in the new substrate, and compact and drench.
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