Reasons for Low Konjac Yield and the Latest Preventive Measures

Konjac itself is a high-yielding economic crop, but many farmers keep asking about the problem of low konjac yield. So what causes low konjac yield? How should it be solved to increase konjac yield? Let's take a look together.

1. Poor quality of seed konjac

If the seed konjac has severe disease, mechanical damage, an overly large seed navel, or uneven age and size, it will affect the growth and development of konjac, leading to various problems during the growing period, indirectly affecting the final yield and resulting in low yield.

Preventive measures: Before sowing, carefully select seed konjac, choosing corms that are undamaged, free of disease spots and free of rot as seed konjac, and strictly control the quality of the seed konjac.

2. Many pests and diseases

There are 14 common konjac diseases, with complex populations, often causing damage in alternating combinations of pests and diseases. Konjac soft rot and southern blight are called the cancer of konjac, and there is currently no specific control agent. Once infected, the yield is reduced in mild cases and the entire crop may fail in severe cases.

Preventive measures: Before sowing, deeply plow the soil to reduce the base number of pests and diseases. Where conditions permit, spread disinfectant agents to reduce the probability of pests and diseases occurring. Choose high-efficiency, low-toxicity biological pesticides to control pests and diseases. Use 30 grams of agricultural streptomycin sulfate or 30 grams of copper master, or 60 grams of Longkejun per mu, mixed with 40 kg of water and sprayed to control konjac pests and diseases. Apply the pesticide once every 10-15 days, for 3-4 consecutive times, for a better preventive effect.

3. Improper cultivation mode

For example, choosing pitted and waterlogged fields, continuous cropping fields, barren fields, yellow mud soil and other field plots to plant konjac, sowing before winter, or adopting clean cropping or intercropping patterns with excessive shading will all affect konjac yield.

Preventive measures: Before planting, choose gently sloping land or flat land with higher terrain and good drainage. Sandy loam soil with deep layers, fertile soil, high organic matter content and a relatively light texture is the best.

4. Improper management

When fertilizing, using undecomposed farmyard manure, applying too much nitrogen fertilizer or using potassium chloride-type compound fertilizer; not treating seed konjac and soil with pesticides; sowing too deep or too shallow; not adopting high-ridge cultivation, poor drainage, not carrying out pesticide prevention during the konjac growing period, and not cleaning the field, etc.; all of these can lead to freezing damage, fertilizer damage, water damage, weed damage, drought damage and other problems, thereby causing reduced yield.

Preventive measures: Fertilization should be reasonable. Organic fertilizer or farmyard manure must be fully decomposed before application. Seed konjac and soil should be disinfected with pesticides before sowing. The sowing depth should be appropriate, neither too deep nor too shallow. When choosing a plot, be sure to choose gently sloping land or flat land with higher terrain and good drainage. Clean the field in time, prevent pests and diseases, and increase both yield and quality.

The above is an introduction to the reasons for low konjac yield and preventive measures. I hope it can help you. To learn more related knowledge, please stay tuned to us.