Pest control of Phalaenopsis
Good pest control is an important link in the successful cultivation of Phalaenopsis. Disease prevention is a regular work, cultivation environment must be well ventilated, plant materials, air humidity appropriate, regular spraying bordeaux mixture, chlorothalonil, good life and other drugs to prevent disease. Once pests and diseases occur, timely application of pesticides for prevention and control.
Main diseases and prevention:
1. Petal gray mold: black mold spots on petals, mycelium can be seen on mold spots.
2. Anthracnose: Large black-brown or pale brown oval or irregular spots grow on the leaves, and there are black-brown or pink concentric circular dots on the spots.
3, white silk disease: bacteria invade roots and leaves, causing root rot or leaf soft rot. White hyphae grow on the affected parts and plant materials, and then brown sclerotia particles.
4. Bacterial soft rot: maceration spots appear on the leaves, and the spots are transparent to the light source.
Grey mold, anthracnose, white silk disease and other fungal diseases, the application of methyl thiophanate, carbendazim, zinc manganese is Pu, anthracnose and other chemicals. Bacterial soft rot is treated with agricultural streptomycin and other pesticides.
II. Main pests and their control:
1. Thrips: damage flower organs and young new leaves, flower buds atrophy and fall off, mature flower buds are damaged after perianth shrinkage and distortion, petals form white spots or stripes after damage, petals fade.
2. Scale insects: the affected leaves are dim in color, and the leaves are yellowed and withered when they are serious.
3. Mites: The injured leaves present dense silver-gray spots, then gradually change into dark brown patches, and finally turn yellow and fall off.
4, butterfly moth larvae: chewing young leaves, leaves present transparent food marks or holes, chewing petals when endangering flowers.
Thrips, scale insects, mites and other spray speed cull, etc. Butterfly moth larvae spray Wanling, dichlorvos and so on.
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Pest control techniques of Phalaenopsis
Disease: Phalaenopsis is native to trees in the tropical rain forest. it not only grows vigorously, but also rarely infects diseases, and the most important disease is blight, which is caused by a fungus that invades the tissue of the plant leaves and divides and propagates in the tissue, destroying the cells of the tissue, and the rate of division and reproduction of this fungus is so amazing that it is enough to destroy a robust plant in a short period of 24 hours. The fungi that can infect Phalaenopsis plants are ⑴ PhytophthoraPalmivora ⑵ Phytoph.
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Four methods of skillfully treating diseases and insect pests of flowers and trees bonsai
It is easy to pollute the environment by using pesticides to control flower and plant diseases and insect pests. Four methods of safe control of flower and plant diseases and insect pests are introduced. 1. Spraying method (1) soak 0.5 kg of plant ash with 2.5 kg of water for 24 hours, and spray its filtrate to kill aphids on plum blossoms, rose flowers, pomegranate trees, etc. (2) spraying with 0.1% baking soda solution can control powdery mildew of rose, chrysanthemum, impatiens, hibiscus, melon and leaf chrysanthemum and other flowers, and the prevention and treatment rate can reach more than 80%.
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