Nematodes were named Nemata by Nathan Cobb in 1919. Later, they were relegated to one of the cystic worms and finally reclassified into the nematode phylum. It has been a full hundred years since the discovery of nematodes, and the loss of nematodes to nematodes in crops worldwide has reached 157 billion US dollars!
Nematodes are rampant
At present, there are nematodes in 21 provinces in China, resulting in an average annual yield loss of 10% to 15% of various crops, cucumbers and loofahs planted in autumn and winter, the disease plant rate is as high as 50% to 70%, the incidence of vegetables reaches 40% to 100%, the total occurrence area of root-knot nematodes in important vegetable producing areas is as high as more than 20 million mu, and the annual loss caused by this is as high as 70 billion yuan, and the solanaceae and cucurbitaceae vegetables are the most seriously affected, with an incidence of 40%-100%! And over the next decade, the incidence of nematode diseases will grow at a rate of 4%-9% per year.
There are nematodes in most vegetable areas in Shandong, and our professional team conducts soil extraction tests in different plots!
Nematodes are detected in this way
Many people will not use the microscope to detect nematodes, often put the soil or roots directly on the microscope slide, however, this method will only see a large piece of black, because most of the microscopes are optical microscopes, using light transmittance for multi-fold magnification, directly put up is often opaque, certainly can not observe anything, so to separate the nematodes from the soil or roots.
Common separation methods are berman's funnel method and simple shallow plate method, which is popularly known as soaking soil!
Because nematodes have a certain hydrophilicity, coupled with the influence of their own gravity, they will gradually sink to the bottom of the water to gather, generally soaking soil / root tissue 3 hours there are most of the nematodes out, of course, the longer the soaking time, the more nematodes precipitate.
However, in the actual operation process, the general use of simple shallow plate method is on the line, that is, wrapped in a certain quality of soil sample with paper or cloth, and then put into a Petri dish, add the right amount of water! If you are detecting nematodes in roots or other tissues, simply cut the root tissue into small pieces (the more broken the better) and drop them into clean water.
The agent is prohibited, restricted, and resistant
1. Halogenated hydrocarbons. Representative agents such as chlorinated bitters (the certificate has expired and will be completely banned in 2020), bromomethane, D-D mixture, dibromochloroalene, the latter 3 of which have now been banned;
2. Methyl thioisothiocyanate. The most common such as MianLong, Wei Bai Mu. These two types of chemical agents are soil fumigants, but the effect is remarkable
3. Organophosphorus. Representatives such as octinophos, methyl isosalphosphate, chlorpyrifos, line phosphorus, benzophos, thiophosphorus, thiazoliphos, chlozophos, butyl thiocyclus, etc., of which benzophos, thiophosphorus, line phosphorus, line phosphorus, methyl isosyphos has been banned or restricted;
4. Carbamates. Including furantine, aldicarb, carbofuran, carbohydrate, kill, etc., but these agents are highly toxic.
5. Antibiotics. The most common and widely used is avermectin. In addition, the line killer also includes amino oligosaccharides, calcium cyanamide and other categories of agents. These three types of agents are non-fumigants, which can be acted on nematodes by suction, touch killing, gastric poisoning and other ways. However, at present, the resistance has increased, and the efficacy of the drug has been continuously reduced.
6. Microbial killer. Currently registered products include purpurea, Rotunda pachyches and Bacillus. But the effect is slower, the prevention effect is poorer!
Novel plant-derived radiocidal agents
According to the study, a variety of plants have a strong inhibitory effect on plant nematodes, so Henan Compson uses high-end technology to extract plant essential oils in marigolds, acacia, tobacco, skullcap, oleander, holly, and some plateau plants, which have a very strong inhibitory effect on nematodes, and after preparation by special processes, they can quickly kill and decompose nematodes, so that where the agent rushes to, the nematodes will decompose where.
Moreover, it can completely replace these traditional products with high toxicity and high residue, particularly heavy odor and high chemical resistance!
Mechanism of action
Nematode plant essential oil is an extract extract extracted from a variety of highland plants, compatible with the environment, biodegradable thoroughly, not the use of toxicity to kill nematodes, but the use of special plant essential oils of infiltration, spread, high adhesion and other characteristics, change the living environment of nematodes, so that it is not adapted to the living environment, resulting in nematodes and other underground pests suffocated in the soil, and yes
And special plant essential oils are concentrated essential oils refined and extracted from the flowers, stems, seeds and roots of different plateau plants, which are used for nematode control, and will not cause harm to people and animals, nor will they be used for a long time to produce resistance.
Its unique mechanism of action not only kills nematodes but also purifies the soil environment, can clean up harmful bacteria in the soil, cut off their food chain and starve to death, while nematode vegetable oil can also decompose some beneficial substances to stimulate crop root growth, quickly repair broken root systems, so that plants are robust and not susceptible to disease, increase production and income.
Advantages of nematode plant essential oils
1, nematode plant essential oil is derived from a variety of plant extracts, the original ecology, and plants have the best affinity, through the active ingredient extraction and accurate proportion of mixed preparation, does not contain hormones and pesticide components, non-toxic and harmless.
2, no need to fumigate, can prevent and treat, do not hurt the roots, do not hurt the seedlings, safety and environmental protection without residue, can be picked and eaten after use, green and healthy no resistance, long-lasting effect!
3. Fast-acting, 12 hours under the microscope observation, the nematode mortality rate is as high as 99%, the nematode soil in the essential oil stock solution microscopy observation within 10 minutes of all nematodes die, the nematode death rate reaches more than 95% after 3 days of neutral soil flushing, and the dead insects in 5 days after partial acidic and alkaline dilution reach more than 95%.
4. Not only kill nematodes, but also kill slower moving underground pests, such as maggots, grubs, etc., and avoid other underground pests without harming the root system.
5. Purify the soil environment, clean up the harmful bacteria in the soil, cut off the food chain of the harmful bacteria so that the bacteria starve to death, stimulate the growth of the root system, and quickly repair the damaged root system.
Subvert the tradition, with seedlings can be applied soil treatment agent
1. Quickly kill nematodes in soil and crop roots! 100% of dead insects (the only fast-killing nematode preparation in China)
2. The old soil is replaced with new soil, and there are serious acidification plots, salinized plots, and compacted plots, which have a good correction effect
3. Empty all the germs in the soil, which can quickly kill the harmful bacteria in the soil, and target all soil-borne diseases, dead seedlings and rotten roots, stem base rot, root rot, sudden fall and other soil disease special effects, for bean carob red root disease, strawberry red pillar, root rot special effect.
4. Kill all underground pests, and quickly kill all underground pest adults and eggs.
5. Quickly awaken the crop absorption system to make the plant more robust. The increase in production is obvious!
Exclusive patented formula, breaking the tradition, faster than chemical antisicides, killing nematodes does not rebound, welcome resistance areas to do comparison experiments, dare to compare with any manufacturer, any product! Does not hurt the soil, does not hurt the roots, has no toxic side effects on the crop, and has no residue!
(Part of the content comes from agricultural materials and markets, special thanks to Professor Liao Jinling of South China Agricultural University, if there is infringement, please contact the author to delete, if you need to reprint, please indicate!) ）