Bacterial brown smut of rice

Latin name: Pseudomonas panzcz (Elliott) stepp Damage symptoms: Rice can be affected from the seedling stage to the panicle stage, but it mainly occurs in the field stage. Symptoms appear when germinating the first true leaves from rice seeds. The main features are the appearance of water-stained long strips on the leaves and leaf sheaths of the seedlings, which develops along the mid-ribs, with lesions ranging from yellow-brown to dark brown; pathogens invade leaves without causing heart rot and severe odor. In adult plants, lesions mostly occur at the junction of the leaves and leaf sheaths, and then develop up and down the mid-ribs, becoming dark-brown long-striped spots. Finally, the diseased part rots, smells, and the leaves die. The diseased plants were generally higher than the healthy plants and had more ineffective tillers; the spikes and necks of diseased ears were elongated, the twigs were light brown, and the deformities were curved and the grains were not true. Incidence characteristics: The occurrence of this disease is closely related to seedling flooding. Where low-lying rice fields are flooded or heavy rains occur day after day, the fields affected by floods are susceptible to disease. Generally, 3 to 8 days after flooding, rice seedlings begin to develop symptoms. High-temperature and high-humidity disease incidence, with dwarf varieties, the development of bright green field weight. Control methods: 1. Rectify the drainage and irrigation system to avoid submergence of flooded paddy fields and reasonable irrigation to prevent deep irrigation. 2. Disinfection of rice seeds (the treatment method is the same as that of rice bacterial blight), strengthen the management of field management, avoid string irrigation and prevent flooding. 3, the incidence of cropland, can be sprayed Chuanhua 018 or Ye Qing double, method with rice bacterial blight. 4. When the flood water recedes, it should be immediately drained, lime and ash should be spread to control the spread of diseases and promote the regeneration of rice roots. When the new roots of rice occur, the nitrogen fertilizer can be quickly applied to promote the recovery and growth of rice plants to reduce losses. Common Pharmacy: Chuanhua 018 Ye Qingshuang

Hydroxylamine Hydrochloride CAS No.5470-11-1

Hydroxylamine Hydrochloride Basic Information
CAS: 5470-11-1
MF: NH2OH·HCl
MW: 69.49
EINECS: 226-798-2

Hydroxylamine Hydrochloride Application

[Use 1]
Used as an analytical reagent and reducing agent, as well as for organic synthesis and color film printing
[Use 2]
Used as a raw material for Pharmaceuticals and organic synthesis, as a reducing agent and imaging agent, etc.
[Use three]
Hydroxylamine hydrochloride is an intermediate of guanidinium carbamate insecticides such as methomyl, aldicarb, thiodicarb, and the like, and is also a raw material for preparing 2,6-dichlorobenzonitrile, o-chlorobenzoquinone, and the like. .
In medicine, it is used to produce sulfamethoxazole, danazol, ethinyl estradiol, norethisterone, methyltestosterone, hydroxyurea, and chlordiazepoxide. A synthetic raw material for anticancer drugs (hydroxyurea) and sulfa drugs.
[Use four]
In the organic synthesis industry, as a reducing agent, hydrazines are prepared.
Dyeing blush intermediate.
It is also used as an Antioxidant in fatty acids and soaps.
[Use five]
Used in the synthetic rubber industry as a short-term discontinuity agent that is not colored.
Analytical chemistry for the examination of aldehydes and ketone organic compounds and microanalysis of sulfonic acids,
Used as a depolarizer in electroanalysis.
Also used in the production of dyes.

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