Konjac Pest and Disease Control Methods and Technical Key Points

Many friends think konjac is taro, but it is not. In hot pot restaurants you can often see a dish similar to jelly. It has very high nutritional value. It can not only be eaten, but also has the effects of promoting blood circulation and removing blood stasis, and soothing the intestines and relieving constipation. In industry it can also be used for papermaking, which makes it quite important to us. However, many friends encounter a series of pests and diseases during cultivation due to poor management. So how should we do a good job in konjac pest and disease control? Details are as follows:

1. Select superior varieties

Choosing excellent varieties is the best control method, or disinfect the seed corms before planting. This can effectively reduce pathogens and prevent the spread of pathogens. Choose seed corms with good growth, no rot, and no wounds. Because most pests and diseases infect through wounds on the seed corms, after selecting the seeds, soak and sun-dry them to eliminate pathogens lurking in the seed corms and reduce the incidence of disease.

2. Avoid continuous cropping

Investigations have found that places with a higher probability of pests and diseases are generally the plots of some long-time growers, mainly because no crop rotation was carried out, causing the breeding environment for pathogens and insect eggs to become better and better, and the incidence of disease also increased. Konjac should be rotated for at least three years or more, and the rotation crops should not be konjac, solanaceous crops, and the like. Gramineous crops can be chosen, which can effectively reduce the incidence of disease.

3. Soil disinfection

Most pathogens and insect eggs attach to the soil to overwinter, and when the temperature gradually rises in spring, they begin to invade konjac. Therefore, after harvest, the soil should be plowed and disinfected in a timely manner, and fallen leaves, branches, and diseased and residual branches should be removed to disrupt the overwintering of pathogens. Also, before sowing the next year, the soil should be disinfected to eliminate remaining pathogens and insect eggs and provide a safe and healthy environment for konjac growth.

4. Reasonable topdressing

Konjac has high yield, so its demand for fertilizer and water is also very large. When topdressing, pay attention to the application of farmyard manure. Unlike other crops, konjac has a greater demand for potassium fertilizer than nitrogen fertilizer, so fertilizers should be reasonably formulated according to the fertilizer requirements of konjac to ensure balanced fertilizer nutrition. Farmyard manure must be fully decomposed, otherwise it will cause konjac root rot and affect growth. Various straws, leaf branches, and the like can also be turned into the soil to supplement soil fertility.

5. Field management

Reduce the number of pathogens in the field, and clear all diseased and residual bodies and fallen leaves from the field, and handle them far away from the konjac field. Regardless of the growing season, the work of clearing diseased and residual bodies must be carried out, and no material carrying pathogens may be left in the field. Also, weeds in the field should be pulled out in time. Overgrown weeds can also cause many pests and diseases, and pulling out weeds can also promote konjac growth and concentrate nutrients.

The above is a brief introduction to konjac pest and disease work. Although konjac has high economic benefits, only achieving high yield makes its value relatively considerable. However, pests and diseases are the main reason endangering konjac yield, so to obtain high yield, pest and disease control work is essential. I hope everyone will plant it. That is all for today's introduction. This article is for reference only, and I hope it can help everyone.