Methods and Technical Key Points for Konjac Disease and Pest Control

Many friends think konjac is taro, but it is actually 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 used as food, with the effects of activating blood and dispelling stasis, and promoting bowel movements. In industry, it can also be used for papermaking, so it is relatively important to us. However, many friends encounter a series of diseases and pests during cultivation due to poor management. So how should we do a good job in konjac disease and pest control? Details are as follows:

1. Select superior varieties

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

2. Avoid continuous cropping

Investigations have found that places with a relatively high incidence of diseases and pests are generally the plots of some long-time growers, mainly because no crop rotation was carried out, resulting in an increasingly better environment for the breeding of pathogens and insect eggs, and thus the disease incidence also increased. Konjac planting should be rotated for at least three years, and the rotation crops should not be konjac, solanaceous crops, and similar crops. Gramineous crops can be chosen, which can effectively reduce the disease incidence.

3. Soil disinfection

Most pathogens and insect eggs overwinter by attaching to the soil, 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, providing 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, attention should be paid 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 needs 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, etc. can also be turned into the soil to supplement soil fertility.

5. Field management

Reduce the number of pathogens in the field, and remove all diseased and residual bodies and fallen leaves from the field, and handle them away from the konjac field. In any growing season, the cleaning of diseased and residual bodies should be carried out, and no material carrying pathogens should be left in the field. Also, weeds in the field should be pulled out in a timely manner. Weeds growing everywhere can also cause many diseases and pests. Pulling out weeds can also promote konjac growth and concentrate nutrients.

The above is a brief introduction to konjac disease and pest control work. Although konjac has high economic benefits, only high yield makes its value relatively considerable. However, diseases and pests are the main reason affecting konjac yield, so if you want to obtain high yield, disease and pest control work is necessary. 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.