China is the world's largest wheat stripe rust epidemic region, mainly in Hebei, Henan, Shaanxi, Shandong, Shanxi, Gansu, Sichuan, Hubei, Yunnan, Qinghai, Xinjiang and other places, wheat stripe rust caused great losses to China's wheat production. .
Wheat stripe rust mainly occurs on leaves, followed by leaf sheaths and stems, and spikes, glumes and awns also occur. At the seedling stage, multiple round-shaped arrays of fresh yellow summer spores were generated on the leaves of the seedlings. When the adult leaves begin to develop, the uredia spores are small strips, bright yellow, oval, parallel to the veins, and arranged in a row, like the stitches rolled by the sewing machine, appearing as a dotted line, the epidermis is broken, and the rust is stained. In the case of near-mature wheat, a round to ovoid-shaped dark brownish summer spore mass appeared on the leaf sheath, emitting a bright yellow powder, namely the summer spores.
Comprehensive prevention measures
1. Implement a biodiversity strategy. All localities combined with adjustment of industrial structure, pressure wheat expansion, pressure wheat expansion, reduce winter wheat strip rust sites, for the coming spring to reduce the pressure of prevention.
2, a reasonable variety layout. Promoting disease-resistant varieties is the most economical and effective method for controlling stripe rust. Expand the cultivation of disease-resistant varieties and reduce the planting area of ​​susceptible wheat varieties.
3, vigorously promote autumn seed dressing, timely late sowing, delay the onset. Compared with undressed seed dressing, the powdered fentrimate seedling field can delay the onset of disease for about 20 days, and the diseased plant rate can be reduced by 12-14%, and the diseased leaf rate can be reduced by 10-13%. Appropriate late broadcast during the best high yielding period. It can reduce the incidence of seedlings, reduce the source of overwintering bacteria, delay the onset of spring.
4. Initiate chemical prevention and control in due course, take measures to protect the face in the early spring, timely block the diseased mother blade, and promptly eradicate the disease center and diseased leaves. When the diseased leaf rate reaches 2-4%, the masses must be organized to carry out unified prevention and control in large areas. The medicament is 15% triadimefon or 12.5% ​​spectrozole, and other medicaments and compounding agents are not blindly selected.
A diagnostic test is a procedure performed to confirm or determine the presence of disease in an individual suspected of having a disease, usually following the report of symptoms, or based on other medical test results.[1][2] This includes posthumous diagnosis. Examples of such tests are:
In Vitro Diagnostic,Dengue In Vitro Diagnostic,Medical In Vitro Diagnostic,Home Use In Vitro Diagnostic
Unimedsume Trading Co., Ltd , https://www.ums-labmed.com