Pest control of melon and leaf chrysanthemum

Melon leaf chrysanthemum, also known as thousand-day lotus. It is colorful, and there are rare blue flowers in flowers, the flower shape is plump, it is a representative potted flower in winter and spring. Because it is cultivated in the greenhouse, the indoor potted flowers are more crowded, coupled with the environment of high temperature and poor ventilation, which provides favorable conditions for the breeding of germs and the survival of some pests, at the same time, pests can also enter the room through vents, so melon and leaf chrysanthemum must pay attention to the prevention and control of related diseases and insect pests from the seedling stage.

1. The harm of red spider to melon and leaf chrysanthemum began in March, when the temperature in the greenhouse was dry. After overwintering, the female adults begin to feed and lay eggs, and they usually do harm around the main veins on the back of the leaves. The small green white spots can be seen on the front of the injured leaves at first, then turn red gradually, the screen appears on the back of the leaves, and the injured leaves will eventually fall off. The earliest prevention should be in winter, to ensure that the surrounding environment is clean, timely removal of weeds and fallen leaves, inspection of basin soil, elimination of overwintering insect sources. In the pest occurrence period, if the melon leaf chrysanthemum has not yet budded and blossomed, it can be sprayed with 2000 times 40% trichloroacitol emulsion or 40% omethoate 1000 times every 7 days, a total of 2 times 3 times, the effect is better; if the melon leaf chrysanthemum has budded and flowered, in order to avoid flower sensitivity, try not to spray pesticides. It can be washed with foliar spray or glued with chewing gum to remove insects, and can also be sprayed with some natural plants such as garlic, onions, pepper and so on after mashing and soaking for several days with an appropriate amount of neutral washing powder.

two。 Aphids are small and multiply quickly, and they are mostly clustered on the back of leaves and tender stems of Chrysanthemum morifolium to absorb juice. The injured leaves turn yellow and curl and wrinkle to the back. In general, the years of warm winter, early warming in spring and even Rain Water began to do harm in March. Because aphids will overwinter with eggs on melon and leaf chrysanthemum, after checking the plant in winter, spray the plant with Baume 5-degree stone sulfur mixture to eliminate the overwintering eggs. Spray 40% omethoate 1200-2000 times or 40% acephate 1000 times in the period of aphid damage. In order to avoid drug damage during flowering, botanical agents such as 3% natural pyrethrum, 25% rotenin and 40% sulfuric acid can also be used, which can be diluted to 1000 ~ 5000 times. Prevention and control of diseases and insect pests of melon and leaf chrysanthemum, also known as thousand-day lotus. It is colorful, and there are rare blue flowers in flowers, the flower shape is plump, it is a representative potted flower in winter and spring. Because it is cultivated in the greenhouse, the indoor potted flowers are more crowded, coupled with the environment of high temperature and poor ventilation, which provides favorable conditions for the breeding of germs and the survival of some pests, at the same time, pests can also enter the room through vents, so melon and leaf chrysanthemum must pay attention to the prevention and control of related diseases and insect pests from the seedling stage. 1. The harm of red spider to melon and leaf chrysanthemum began in March, when the temperature in the greenhouse was dry. After overwintering, the female adults begin to feed and lay eggs, and they usually do harm around the main veins on the back of the leaves. The small green white spots can be seen on the front of the injured leaves at first, then turn red gradually, the screen appears on the back of the leaves, and the injured leaves will eventually fall off. The earliest prevention should be in winter, to ensure that the surrounding environment is clean, timely removal of weeds and fallen leaves, inspection of basin soil, elimination of overwintering insect sources. In the pest occurrence period, if the melon leaf chrysanthemum has not yet budded and blossomed, it can be sprayed with 2000 times 40% trichloroacitol emulsion or 40% omethoate 1000 times every 7 days, a total of 2 times 3 times, the effect is better; if the melon leaf chrysanthemum has budded and flowered, in order to avoid flower sensitivity, try not to spray pesticides. It can be washed with foliar spray or glued with chewing gum to remove insects, and can also be sprayed with some natural plants such as garlic, onions, pepper and so on after mashing and soaking for several days with an appropriate amount of neutral washing powder. two。 Aphids are small and multiply rapidly, and are often clustered on the back of leaves and tender stems of Chrysanthemum morifolium to absorb juice. The injured leaves turn yellow and curl and wrinkle to the back. In general, the years of warm winter, early warming in spring and even Rain Water began to do harm in March. Because aphids will overwinter with eggs on melon and leaf chrysanthemum, after checking the plant in winter, spray the plant with Baume 5-degree stone sulfur mixture to eliminate the overwintering eggs. Spray 40% omethoate 1200-2000 times or 40% acephate 1000 times in the period of aphid damage. In order to avoid drug damage during flowering, botanical agents such as 3% natural pyrethrum, 25% rotenin and 40% sulfuric acid can also be used, which can be diluted to 1000 ~ 5000 times. 3. The harm of poisonous moth to melon leaf chrysanthemum is mainly larva, which is often called poisonous caterpillar. The first instar larvae cluster to harm, gnawing on the mesophyll, leaving the epidermis, like a skylight, and the larger poisonous caterpillar disperses the damage, biting the leaves into notches and holes. The whole plant begins to suffer from the lower larger leaves, and the peak period of insect pests is mostly in April, when the temperature in the greenhouse is stable at about 20 ℃. If drug control is taken, 50% fenitrothion or 50% phoxim can be sprayed 1000 times. But at this time, melon-leaf chrysanthemum is usually in the flowering stage, only manual hunting is more safe. It is worth noting that the poisonous caterpillar is toxic to human skin and can cause dermatitis, so it is necessary to wear gloves and catch with tweezers to prevent it. 4. Powdery mildew Chrysanthemum is the most susceptible to powdery mildew, which is a widely spread fungal disease. A white adhesive appeared on the front of the infected leaves, curled and deformed, withered and fell early. The simplest way to prevent is to ensure adequate light and timely ventilation. If the disease has already occurred, it is necessary to use 1000 times of 70% methyl topiramate or 50% diluted 50% Dysenamine at the initial stage, or 2000 times of 25% vermicellin wettable powder to control the disease. At the same time, the diseased leaves were cut off and destroyed, and the diseased plants were separated from healthy plants so as not to infect each other and aggravate the spread of the disease. 5. Root rot and stem rot in winter, the water in the pot soil of melon and leaf chrysanthemum is often not easy to dry, poor drainage coupled with insufficient indoor light, excessive moist air and other adverse factors will cause the occurrence of root rot and stem rot. The root and stem are black and rotten. First of all, the prevention and control methods should pay attention to ventilation and humidity reduction after watering. Increase the light. Secondly, the newly diseased melon-leaf chrysanthemum was cut off, applied with sulfur powder, and replanted with loose culture soil. In a word, the prevention and control of diseases and insect pests of melon and leaf chrysanthemum is mainly based on prevention. only by understanding the occurrence time and law of diseases and insect pests and taking correct protective measures before this, can we reduce the damage of diseases and insect pests as far as possible and effectively improve the ornamental effect of melon and leaf chrysanthemum. Control methods of Diseases and insect pests of Chrysanthemum morifolium

Melon leaf chrysanthemum, also known as thousand-day lotus. It is colorful, and there are rare blue flowers in flowers, the flower shape is plump, it is a representative potted flower in winter and spring. Because it is cultivated in the greenhouse, the indoor potted flowers are more crowded, the temperature is high, and the environment with poor ventilation provides favorable conditions for the breeding of bacteria and the survival of some pests. At the same time, pests can also enter the room through vents, so melon and leaf chrysanthemum must pay attention to the prevention and control of related diseases and insect pests from the seedling stage. 1. The harm of red spider to melon and leaf chrysanthemum began in March, when the temperature in the greenhouse was dry. After overwintering, the female adults begin to feed and lay eggs, and they usually do harm around the main veins on the back of the leaves. The small white spots with loss of green can be seen on the front of the injured leaves at first, then turn red gradually, and the screen appears on the back of the leaves, and the injured leaves will eventually fall off. The earliest prevention should be in winter, to ensure that the surrounding environment is clean, timely removal of weeds and fallen leaves, inspection of basin soil, elimination of overwintering insect sources. In the pest occurrence period, if the melon leaf chrysanthemum has not yet budded and blossomed, it can be sprayed with 2000 times dicofol emulsion or 40% omethoate 1000 times every 7 days, a total of 2 mi 3 times, the effect is better; if the melon leaf chrysanthemum has budded and flowered, in order to avoid flower sensitivity, try not to spray pesticides. It can be washed with foliar spray or glued with chewing gum to remove insects, and can also be sprayed with the extract of some natural plants such as garlic, onions, pepper and so on after several days of tamping blisters with an appropriate amount of neutral washing powder. two。 Aphids are small and multiply quickly, and they are mostly clustered on the back of leaves and tender stems of Chrysanthemum morifolium to absorb juice. The injured leaves turn yellow and curl and wrinkle to the back. In general, the years of warm winter, early warming in spring and even Rain Water began to do harm in March. Because aphids will overwinter with eggs on melon and leaf chrysanthemum, after checking the plant in winter, spray the plant with Baume 5-degree stone sulfur mixture to eliminate the overwintering eggs. Spray 40% omethoate 1200-2000 times or 40% acephate 1000 times during the aphid damage period. In order to avoid drug damage during flowering, botanical agents such as 3% natural pyrethrum, 25% rotenin and 40% sulfuric acid can also be used, which can be diluted to 1000-1500 times. 3. The harm of poisonous moth to melon and leaf chrysanthemum is mainly larva, which is often called poisonous caterpillar. The first instar larvae cluster to do harm, gnawing on the mesophyll, leaving the epidermis, like a skylight. The larger poisonous caterpillars disperse the damage and bite the leaves into notches and holes. The whole plant began to suffer from the larger leaves in the lower part. The peak period of insect pests is mostly in April, when the temperature in the greenhouse is stable at about 20 ℃. If drug control is taken, 50% fenitrothion or 50% phoxim can be sprayed 1000 times. But at this time, melon-leaf chrysanthemum is usually in the flowering stage, only manual hunting is more safe. It is worth noting that the poisonous caterpillar is toxic to human skin and can cause dermatitis, so it is necessary to wear gloves and catch with tweezers to prevent it. 4. Powdery mildew Chrysanthemum is the most susceptible to powdery mildew, which is a widely spread fungal disease. A white adhesive appeared on the front of the infected leaves, curled and deformed, withered and fell early. The simplest way to prevent is to ensure adequate light and timely ventilation. If the disease has already occurred, it is necessary to use 1000 times of 70% methyl topiramate or 50% diluted 50% Dysenamine at the initial stage, or 2000 times of 25% vermicellin wettable powder to control the disease. At the same time, the diseased leaves were cut off and destroyed, and the diseased plants were separated from healthy plants so as not to infect each other and aggravate the spread of the disease. 5. Root rot and stem rot in winter, the water in the pot soil of melon and leaf chrysanthemum is often not easy to dry, poor drainage coupled with insufficient indoor light, excessive moist air and other adverse factors will cause the occurrence of root rot and stem rot. The root and stem are black and rotten. First of all, the prevention and treatment methods should pay attention to ventilation and humidity reduction and increase light after watering. Secondly, the newly diseased melon-leaf chrysanthemum was cut off, applied with sulfur powder, and replanted with loose culture soil. In a word, the prevention and control of diseases and insect pests of melon and leaf chrysanthemum is mainly based on prevention. only by understanding the occurrence time and law of diseases and insect pests and taking correct protective measures before this, can we reduce the damage of diseases and insect pests as far as possible and effectively improve the ornamental effect of melon and leaf chrysanthemum.