Aminooligosaccharides refer to sugar substances that are connected by multiple monosaccharides and contain one or more amino groups. They are rich in carbon and nitrogen nutrients.
At present, in agricultural production, the scope of amino oligosaccharide registration is relatively wide, including viral diseases, leaf spot disease, black spot disease and other fungal diseases and root-knot nematodes. Some manufacturers have registered it as a crop growth regulator. From the registration alone, it is indeed very versatile.
Its mechanism of action, on the one hand, can supplement nutrition to crops and improve their resistance to stress; on the other hand, it can induce plants to produce antibacterial substances, or directly inhibit pathogens, thereby playing a certain role in preventing and controlling viruses and fungal diseases; in the field of preventing and controlling root-knot nematodes, amino oligosaccharides can induce crops to produce a chitinase to decompose and absorb nematodes and egg shells, and ultimately kill nematodes and eggs.
How effective is amino oligosaccharides in treating diseases and preventing insects?
Although amino oligosaccharides are registered for many diseases and root-knot nematodes, in actual use, if amino oligosaccharides are used alone, the effect is very general or even poor, whether it is disease prevention or pest control. Why does this happen?
In fact, amino oligosaccharides are more like a “plant health product”, just like humans eat some health products to improve disease resistance, amino oligosaccharides, it probably works in the same mechanism.
After growers use amino oligosaccharides on crops, it needs to be absorbed by the crops, and then induce the crops to produce some other substances to prevent diseases and control pests. This process takes some time. If we use it during the high incidence period of crop diseases, pests and insect pests, then of course the effect is not good, it cannot be quickly effective, and the best time point is delayed, so the diseases and pests are aggravated.
Therefore, for amino oligosaccharides, although it has registered so many diseases and pests, we must not use amino oligosaccharides alone in actual use, or if we want to use it, we must use it in advance to ensure the effect. If it is during the high incidence period of diseases and pests, it is recommended that you use some compound solutions of amino oligosaccharides.
Several common formulas of amino oligosaccharides
- Viral diseases: When there is no disease, it can be used alone for prevention. After the disease occurs, it is not recommended to use it alone. It is recommended to use amino oligosaccharides with chlorfenapyr, guanidine. Copper acetate, ningnanmycin, and sterol to ensure the effect.
- Fungal diseases: For the prevention and control of leaf spot, it is recommended to use amino oligosaccharides + difenoconazole, tebuconazole, etc.; for the prevention and control of late blight, it is recommended to use amino oligosaccharides + oxazolidinone, myclobutanil, etc.; for the prevention and control of wilt, it is recommended to use amino oligosaccharides + oxazolidinone, etc.
- Root-knot nematodes: For the prevention and control of root nematodes, it is really not recommended to use it alone. Although it is registered for root nematodes, it is recommended to use avermectin + amino oligosaccharides together for early prevention of root nematodes; in the later stage, when root nematodes occur obviously, it is recommended to use amino oligosaccharides together with thiazophos.
Some growers use amino oligosaccharides in full accordance with the registered pest and disease guidance after purchasing amino oligosaccharides. If it is in the early stage of the disease, it is okay. Once it is in the high incidence period, the effect is indeed not obvious after use.