Meloidogyne incognita is a common pest in agriculture, which is harmful and difficult to control. So, how should Meloidogyne incognita be controlled?
Reasons for difficult control of Meloidogyne incognita:
1. The insect is small and has strong concealment
Meloidogyne incognita is a kind of soil borne insect pest with small individual, strong invasion ability, parasitic on many crops, weeds, etc; The breeding speed is fast, and the population base of insects is easy to accumulate in large quantities.
2. Invading the root, difficult to detect
When the plant exhibits symptoms, the roots have been invaded by nematodes, causing damage to the plant. The plant behaves similarly to soil borne diseases such as bacterial wilt, and is easily misled by apparent traits.
3. Strong environmental adaptability
It is usually active in soil layers around 15-30cm, reaching depths of up to 1.5 meters. It can infect multiple hosts and can survive for 3 years even under no host conditions.
4. Complex elimination procedures
There are many Pathogen transmission of Meloidogyne incognita. Contaminated farm tools, seedlings with worms, and soil carried with shoes during operation have all become the mediators of Meloidogyne incognita transmission.
Prevention and control methods：
1. Selection of crop varieties
We must choose varieties or rootstocks resistant to Meloidogyne incognita, and select vegetable varieties resistant to disease or disease, so that we can greatly reduce the harm of various diseases.
2. Seedling raising in disease-free soil
When raising seedlings, we should choose the soil without Meloidogyne incognita disease for seedling raising. The soil with Meloidogyne incognita disease should be disinfected before seedling raising. We should ensure that the seedlings are not infected. Only in this way can we reduce the incidence of disease at the adult stage.
3. Deep soil plowing and crop rotation
Generally, if we dig deep into the soil, we need to reach 25 centimeters or more in order to bring the nematodes in the deep soil layer to the surface. At this time, the surface soil will not only become loose, but also reduce the water content after being exposed to the sun, which is not conducive to the survival of nematodes.
4. High temperature greenhouse, soil treatment
If it is Meloidogyne incognita in the greenhouse, we can use the high heat in summer to kill most nematodes. At the same time, we can also decompose the plant residues that Meloidogyne incognita depends on to survive in the soil.
In addition, when the soil is sandy, we should improve the soil year by year, which can also effectively reduce the damage of Meloidogyne incognita.
5. Field management
We can apply decayed Manure in the field and increase phosphorus and potassium fertilizer, which can improve the disease resistance of plants. We must remember that we must not apply immature Manure, which will only aggravate the occurrence of Meloidogyne incognita.
6. Increase the application of functional biological fertilizers and strengthen cultivation management
We need to apply more nematode control biological fertilizer (for example, containing Bacillus thuringiensis, purple purple spore, etc.) to improve the soil microbial flora, effectively prevent the occurrence of nematodes, enhance growth, and reduce the harm of Meloidogyne incognita.
Post time: Jul-11-2023