Detailed Explanation of Field Management Techniques for Burdock
Burdock, also known as Dali seed, Eshi and so on, was introduced from Japan and is now widely cultivated in China. Its root can also be made into tea, and its appearance is somewhat similar to that of Chinese yam. So, what field management techniques does burdock require?Let's take a look together!
1. Checking seedlings and filling gaps
About one week after planting, burdock will basically emerge. Therefore, it is necessary to check the emergence of burdock seedlings in the field as soon as possible, see whether all the seedlings in the field have emerged completely, then find out the reasons why they have not emerged, and carry out timely reseeding. Reseeding should be done on cloudy days or before and after rain, so that the survival rate of the replanted burdock will be somewhat higher. Finally, note that reseeding must be completed within seven days, which makes later unified management more convenient.
2. Thinning seedlings and establishing planting
While filling gaps, it is also necessary to observe whether the seedlings in any part of the field are growing too densely. If so, thinning should be carried out in time. Generally, only two seedlings need to be kept per plant, and the excess should be pulled out promptly to avoid consuming too many nutrients and weakening soil fertility. Next, establish the planting at a spacing of 35 to 40 cm per row and 25 to 30 cm per plant.
3. Cultivation and weeding
Burdock grows relatively slowly, so during planting it is necessary to cultivate and weed. This can let the soil breathe, promote root growth, and at the same time promote the absorption of nutrients by burdock. Under normal planting conditions, the entire growth process of burdock requires about four to five rounds of cultivation and weeding. The first is carried out about three days after the replanted seedlings have survived, and afterwards scientific cultivation and weeding should be carried out according to the growth of the burdock. You can control the timing of weeding yourselves.
4. Scientific fertilization and watering
If there is no rainfall when filling gaps, then watering must be carried out in time after reseeding; otherwise, it will affect the survival rate of the plants. Next, throughout the entire growth process of burdock, the soil moisture in the field should be maintained above 60 percent, so as to maintain the water needed for normal growth of burdock. Each watering should mainly be carried out according to the degree of dryness and wetness of the field soil, and drainage should also be done accordingly. After planting, burdock generally does not receive topdressing until the second year. According to the standard of 2,000 jin of organic fertilizer and 30 jin of phosphate fertilizer per mu, spread them evenly in the intervals, then combine with cultivation to turn the fertilizer into the soil. Then, when burdock blooms, an appropriate amount of foliar fertilizer can be applied as topdressing, which can promote the growth of burdock and ensure its quality.
5. Pest and disease control
The most common pests and diseases of burdock are black spot disease and aphids. Brown spot disease is mainly a fungal disease caused by high temperature and high humidity. It mainly damages the stems and leaves of burdock, so we should strengthen water management in the field and carry out rational fertilization to enhance the immunity of the plants. Next, when the disease occurs, chlorothalonil can be used for control, and generally it needs to be sprayed three to four times to completely control it. Aphids basically run through the entire growth process of burdock, affecting plant growth and causing great harm to stems and leaves. We can use yellow sticky boards for trapping and killing, and at the same time use pirimicarb wettable powder for spraying and killing.
The above are the key field management points for burdock. I hope they can help all growers.