How to grow coriander

After breaking the shell, soaking and softening the shell, the parsley seeds are evenly sowed on the land with loose soil, rich organic matter and convenient drainage and irrigation, and then covered with a layer of fine soil. And then wait for it to emerge. Keep the soil moist during planting and water it every 5-7 days. When parsley grows leaves, it is watered and some organic fertilizer is applied. Finally, do a good job in the prevention and control of diseases and insect pests.

Common parsley diseases and insect pests and their control methods are as follows:

1. Sclerotinia sclerotiorum

The disease is easy to occur in the whole growing period, so it is necessary to strengthen the ventilation and reduce the humidity in order to reduce the occurrence of the disease. In addition, if the land has been turned over the disease, crop rotation or soil disinfection should be carried out.

two。 Parsley leaf blight and spot blight

The two diseases spread rapidly and the harm caused by them is more serious. Mainly harmful leaves, the leaves become yellowish brown after infection, the diseased parts rot when the temperature is high, and seriously infect the tender stems to the heart leaves along the veins, resulting in a serious reduction in yield. Therefore, growers should pay attention to prevention, generally with seed disinfection-based preventive measures, the method is to use "carbendan" or "carbendazim" 500x solution soaked seeds 10-15min, rinse clean and sow seeds. The second is to strengthen management, pay attention to ventilation and dehumidification when the humidity is on the high side at the beginning of the shed, and timely spray control when diseases are found. Use carbendazim 600,800x liquid, mancozeb 600x liquid, 1000-fold methyl thiophanate solution, chlorothalonil 500x solution, the effect of mixed use of two or more is better.

3. Coriander root rot

The disease often occurs in low-lying and wet land. After the incidence of coriander root, the main root is yellowish brown or brown, soft rot, no or almost no fibrous root, the root system of the plant is broken as soon as it is pulled out by hand, the aboveground plant is short, the leaves are withered and yellow, and lose its commerciality. So we should try our best to avoid planting on low-lying land.

The prevention of coriander diseases should be given priority to, and the prevention work should be done in advance to reduce losses. If there is a disease, it is necessary to timely treatment, control the disease and prevent the spread of a large area.