The control methods of freesia mosaic disease and the control of orchid diseases and insect pests

[plant diseases and insect pests] Prevention and control methods of freesia mosaic disease [expert answers] symptoms of freesia mosaic disease: Brown stripes appear on freesia leaves, green stripes appear on petals, see through the light of plant leaves, there are many transparent spots, and soon become purple spots, withering up from the lower leaves. In severe cases, the leaves are twisted and the growth and development are inhibited.

Picture: prevention and treatment of freesia mosaic disease: 1. Timely spraying 46% dimethoate or omethoate EC 1000 times to 2000 times, 80% dichlorvos EC 1500 times, 90% trichlorfon crystals 1000 times, 50% malathion 1500 times and other pesticides or spraying with 40% omethoate 1500 times or 2.5% cypermethrin 3000 times, kill aphids and other virus-transmitting insects and prevent the virus from spreading to healthy plants. two。 Diseased plants should be removed and destroyed in time. 3. Re-purchase healthy virus-free bulb planting, or pay attention to selecting seeds from uninfected spotted plants, and replace fresh virus-free soil cultivation. 4. Seeds are generally virus-free, and the seeds produced by them have been sterilized and can be used for sowing and breeding flowering bulbs. 5. Disinfect operating tools, including scissors, shovels, and the operator's hands with 3%, 5% trisodium phosphate or hot soapy water. 6. At the initial stage of the disease, 0.5% antivenom No. 1 water agent 300 times, 5% bacterial detergent 400 mures 500 times, 1.5% plant spirit emulsion 700 times, 0.2% permanganate and other sprays were sprayed every 7 to 10 days for 3 times in a row, which also had a certain effect. [editor's summary] freesia, also known as Xiang Xuehai, is a common indoor farmed flower. Freesia mosaic disease is a common disease in freesia culture, which is mainly spread by aphids, so when aphids are found, it is necessary to control the occurrence of freesia mosaic disease.