Prevention and control methods of indoor flower diseases and insect pests

aphids

Use botanical pesticides to spray the affected area. Garlic, onion, pepper and orange juice can be used. Chop the plants into small pieces, and place a teaspoon of chopped onions or half a teaspoon of mashed garlic in a glass of water for a day and night. Then pour and brush several times.

grinding 50- 70g bitter pepper, boiling in 0.5-0.7L water for 1h, cooling for one day, filtering, storing in glass bottle with sand stopper. Before use add 8-10g pepper stock solution and 4 g laundry soap to 1L water, mix well and spray wash plants. This medicine is suitable for pest control against piercing or chewing mouthparts.

1000g of peel (orange, citrus, lemon) is crushed by a grinder, added with 3L of water, put into a glass bottle, tightly covered, stored in a warm and shaded place for 5 days and nights, stirred evenly, filtered with gauze, the obtained stock solution is quickly put into the bottle, covered with a stopper, sealed with paraffin, and stored in a cool and shaded place. When spraying, add 2.5L water into 25g stock solution and 10g laundry soap and stir well. Aphids can be eliminated after 10 days.

The tobacco leaf liquid is also effective in controlling aphids. 200g yellow tobacco leaves are soaked in 5 L water for one day and night, then boiled for 2 hours and filtered to form the original liquid. Before use, dilute it with a mixture ratio of 1:1, and add 200g soap to 5 L diluted smoke liquid for use.

red spider

Plant control can be done by washing plants with cold water or by using plant pesticides. 8g pyrethrum is soaked in 50g alcohol to form stock solution in 15 days. Before use, 6 parts of stock solution and 1 part of diluted soap solution are added to 20 parts of water and mixed evenly. Or soak 600g fresh or 300g dry potato stems and leaves in water for 4 hours, filter and spray the affected plants, but some plants cannot be controlled with this solution, such as cacti and hairy plants.

You can also use turpentine and garlic juice gas to kill red spiders and aphids, that is, the diseased plants are arranged around a small dish containing turpentine or garlic juice, wrapped in plastic film, after 3 hours, washed with water, so repeated several times.

red scale

The scale is a pest with sucking mouthparts. Larvae crawl on the plant body, adults and larvae suck plant sap, the leaves of the injured plant yellow, branches deformed and lost ornamental value. Some scale insects secrete a honey-scented mucus that attracts fungi to colonize and coat plants black. The control of round scale can be carefully caught by hand, and then dissolved in 1 part soap in 6 parts water to prepare a solution to wash plants.

thrips

Thrips is black or brown, serious harm period is spring and summer, suitable environment is warm and dry. Thrips inhabit on the back of leaves and absorb leaf sap. At the beginning of damage, many shiny spots appear on the leaves. Later, the leaves fade into brown, fall leaves, buds and flowers. Thrips secretions cause mildew and make plants lose their ornamental value. Control methods and aphids, red spiders, round scale the same.

Root rot (black stem disease)

Root disease causes blackening of plant rhizomes (coleus, violets), excessive moisture, insufficient light, poor ventilation, high temperature and excessive sap concentration, which will cause root rot to occur in large numbers. Prevention must ensure correct management methods, according to the characteristics of various plants, pruning plants at any time, maintaining the supply of nutrient solution, maintaining appropriate temperature, irrigating potassium permanganate (1L of water into 3 g) or spraying onion juice (20g chopped onions into 1L of water, soaking for one day and night, filtering), spraying 2-3 times in 6 days.

powdery mildew

Powdery mildew causes white adhesions to appear on plant leaves and branches, and the affected leaves are twisted and deformed, withered, and do not bloom.

Prevention methods are adequate light, ventilation, frequent fertilization, and spraying of copper sulfate soap or crude sodium carbonate solution (4- 5 g dissolved in 1L of water) on infected plants. Spraying mixed fertilizer on diseased plants.

Garlic juice (25g of mashed garlic mixed with 1L of water for a day and night) can also be used to control plant diseases, washing plants once every 6 days. You can also spray a mixture of 1g salicylic acid, 3g dietary alkali, 5mg denatured alcohol, 10g soap and 1L water, diluted 3 times before use.