Control methods of common diseases and insect pests of Artemisia annua L.

Chrysanthemum, also known as imperial cuisine, is said to be a delicacy of the ancient court. Although it tastes a little bitter, it is extremely rich in nutrition, rich in a variety of vitamins, calcium and iron, as well as the effect of clearing blood and nourishing the heart, lowering blood pressure and moisturizing the lungs. Therefore, vegetables that are more affected by the environment on the market, but with the gradual increase in planting area and yield, there are diseases and insect pests, so what diseases and insect pests are there when chrysanthemum is planted, and how to prevent and control them? let's take a look at the pro-agricultural network.

1. Downy mildew

Downy mildew mainly harms leaves, it is spread by fungal infection, the mycelium overwinters on the host, the spores spread through wind and rain in the coming year, invade from the stomata of the leaves, and the leaves appear faded disease spots when the disease occurs. With the reproduction and growth of spores, the leaves gradually withered and yellowed and turned green, and finally there was a white mildew layer on the back of the leaves, just like frosting in winter, so it was named downy mildew.

Prevention and control methods: collect and burn all the diseased remains of the planting land before planting, turn the soil deeply, put an end to the overwintering of bacteria, strengthen the management during planting, increase the application of phosphorus and potassium fertilizer, and increase the disease resistance of the plant. when the disease occurs, it is sprayed with 250 times of Shuangjiling wettable powder.

2. Blight

The blight mainly occurred in the seedling stage of Artemisia annua, which mainly harmed the stem base of the seedlings, the irregular brown disease spot appeared at the root base during the disease, and the diseased seedlings withered during the day, but recovered at night. With the development of the disease, the disease began to sink, overflow and shrink, and when the disease spot completely spread around the stem, the plant began to wither and die.

Control methods: plants disinfect and sterilize seeds and soil, prevent the invasion of bacteria, strengthen management before and after planting, pay attention to disease prevention and control, and timely spray 1200 times of methyl fumarate EC after disease disease. or with Dajun + Menshen diluted and irrigated, these two methods can be used for prevention and control.

3. Leaf spot

From the name, we can know that leaf spot is mainly harmful to leaves, and there are irregular disease spots after the disease, and there are wheel lines in the disease spots. With the development of the disease, the disease spots gradually change color to brown, and in addition, they also spread from leaves to stems and petioles, resulting in planting wilt and affecting yield and quality.

Control methods: rotation with other crops, avoid continuous cropping, select plots with good drainage, increase phosphorus and potassium fertilizer during planting, increase plant disease resistance, and remove diseased leaves in time when diseased plants are found. When the disease occurs, it can be sprayed with 200 times of Wuyimymycin water or 6.5% carbendazim dust.

4. Aphids

Aphids are common diseases in many vegetables. they like to live in groups and often suck clean the young parts of the plant, such as leaves, twigs, buds and so on, making the leaves wrinkle, curl and deform. if the aphids are serious, it will lead to the withering and even death of the whole plant.

Control methods: burn the weeds and debris in the field before overwintering to avoid overwintering of insect eggs, use its natural enemies to control, or spray diluted aphid mite white EC to control.

The above are the common pest control methods of Artemisia annua brought by the pro-agricultural network. This is the end of the introduction on the pest control methods of Artemisia annua. I hope it can help you, more agricultural knowledge, please pay attention to the pro-agricultural network.