Analysis and Solution of the Harm of Seed Coating Agent

1.
Advantages of seed coating agents? The main plant diseases and insect pests at the seedling stage of planting species refer to the various seedling diseases and insect pests that are infected, spread by seeds, spread by soil, and spread after the seeds germinate, which will damage the roots and sprouts.
The damage is severe and the loss is relatively high.
Big
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• Once the plant diseases and insect pests occur at the seedling stage, they cannot be recovered.
If the quarantine insect pests are introduced, it is difficult to extinguish it.
It is difficult to carry out effective treatment to control the disease during the rapid development and onset stage of its initial infection
.
? How to comprehensively control seedling diseases and insect pests during the seedling stage? Agronomic measures such as crop rotation, seed selection, and staged sowing have had little effect
.
Dry seed dressing and wet seed dressing are used with chemical agents.
The agents are not easy to stick.
After storage and movement, transportation, and sowing, they will lose serious loss and have poor efficacy.
Or they may be difficult to mix well due to the large particles of the processed agent and poor efficacy.
Severe drug damage
.
Pests and diseases occur at the same time.
Insecticides and fungicides are mixed at the same time, and the dosage is high.
Regardless of whether the wet-mixing and dry-mixing agents have a small adhesion amount, the efficacy is not ideal and the cost is high
.
In addition, seeds cannot be stored after treatment and need to be sown immediately.
They cannot be used as a measure of seed standardization, socialized services and prenatal services, but can only be used as a means of seed disinfection
.
? With the development of science and technology, it is called for standardized, systematized, simplified, easy-to-replicate, high-efficiency, safe, and environmentally friendly measures for the control of plant diseases and insect pests and the cultivation of strong seedlings at the seedling stage
.
? Seed coating agent is composed of insecticides, fungicides, rodent repellents, compound fertilizers, trace elements, plant growth regulators, synergists, slow-release agents, film-forming agents and surfactants.
The compound product with strong seedling effect is suitable for highly mechanized agriculture.
It covers the surface of good seeds and can instantly solidify into a film.
The soil can only swell without being dissolved when it meets with water, so that the medicament and micro-fertilizer are released slowly and prolonged.
The effective period of the medicine increases the control effect, improves the quality of seeds, saves pesticides and fertilizers, and reduces the pollution of pesticides to the environment and the killing of natural enemies
.
The medicament and fertilizer are slowly released from the underground, and are transmitted to the above-ground part of the plant through the roots, to control the upper part of the plant disease and insect damage, ensure the healthy growth of the crop, and realize the simultaneous growth of economic, social and ecological benefits
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? Seed coating agent production is an important link before agricultural production, which is conducive to seed standardization, industrialization and commercialization, and meets the new requirements of China's high-yield, high-efficiency, and high-quality agriculture
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2? Common seed coating agent phytotoxicity? 2.
1? Fungicide phytotoxicity? The main types of fungicides that cause seed coating agents to produce phytotoxicity are: triazole difenoconazole, propiconazole, prothioconazole, Paclobutrazol, Sifluconazole, Triconazole, Epoxyconazole, Triconazole, Triadimefon, Hydroconazole, Imazalil, Chlorpheniridine, Ethiconazole, Triadimefon, Triconazole, Diniconazole, thiram, vellus, seed dressing, seed dressing, prosenzine, sirsenzine, senbium, mancozeb, dithiocyanomethane, oxaconazole, fidaconazole , Fludioxonil, Thiophanate-methyl
.
? 2.
2? Plant growth regulators phytotoxicity? Synthetic plant growth regulators indole acetic acid, indole butyric acid, gibberellin, brassin, sodium nitrophenolate, naphthalene acetic acid, 24-D butyl ester, these varieties If used improperly, it will cause phytotoxicity
.
2.
3? Trace element phytotoxicity? Such as the phytotoxicity caused by mineral nutrients such as magnesium, iron, zinc, manganese, copper, boron, and molybdenum
.
?? 2.
4 Seed insecticide phytotoxicity cause phytotoxicity insecticides varieties are:? Buprofezin, imidacloprid, carbofuran, chlorantraniliprole the like
.
The common feature of pesticide damage is that it inhibits crop growth, causes crop malnutrition, affects crop emergence, tillering, flowering, fruiting, and maturity.
margin tip discoloration, sagging or dead leaves; underground roots or swelling or shrinkage, less fibrous roots, not long new roots; small plant, not heading, fruit malformations
.
For example, 30% of the soybean field is harmed by the seed coating agent.
The edges of soybean cotyledons are reddish-brown, the true leaves are shrunken and dark green, not spreading, the roots are bent, the fibrous roots are few or not growing, and the seedlings are seriously dead
.
35% grams of Budweiser phytotoxicity, every kilogram of soybean seeds with 2.
4 grams of active ingredient of carbofuran will produce phytotoxicity.
The symptoms are reddish-brown edges of soybean cotyledons, small and round true leaves, red edges, and some dry leaves.
Falling off, thin and weak stems, curved roots, few or no fibrous roots
.
More than 30%·K·Fu or 35% (contains the hidden ingredient triadimefon, or indole butyric acid, or sodium nitrophenolate, or tricyclazole, etc.
) seed coating drug damage, soybean hypocotyl enlargement, It is curved, does not grow fibrous roots, cotyledons do not open, or true leaves do not shrink and do not unfold, severely do not emerge or rot
.
Another example is corn field 35% or 30% (contains the hidden component triadimefon, or indole butyric acid, or sodium nitrophenolate, or tricyclazole, etc.
) seed coating drug damage, inhibit the growth of seedlings, leaves turn yellow or White, no new roots, serious dead seedlings and rotten seeds; 6% tebuconazole suspension seed coating agent phytotoxicity, corn leaves turn yellow or white after the three-leaf stage, drooping or rotten leaves, no fibrous roots, serious death Seedlings, or leaf sheaths are damaged, and the leaves are arched under the ground and cannot be unearthed
.