永利402

        Wheat stem smut control-永利402

        Date:2012-09-28 11:27

        Wheat stem smut is a fungal disease. Bacteria with plant residue in soil, manure in the winter, can also vary with wheat seed propagation over long distance. The fungus infects wheat plumule, achieve the growth point can along with the growth of wheat, wheat damage throughout the plant, including the stem, Kanou Ho. Plant tillering increased, the early onset can be found in leaf blade and leaf sheath and leaf veins parallel stripe eminence, blade does not stretch. To wheat jointing to booting stage symptoms gradually apparent, plant obviously Dwarfing and distorted, bulge part black, rupture, spilling out of black spores. Most plants can't heading and early death. The field investigation the condition when attention is not late, preferably in wheat at booting stage of.
        Wheat stem smut has two characteristics and prevention have close relationships: one is the spores can tolerate adverse environment, in dry soil can survive 3~5 years, which requires rotation of wheat and corn, beans, especially for serious illness field. If replant rice, a year can eradicate. Two is the pathogen infect only not unearthed shoots of wheat, is a local infection, time is limited. Therefore, careful soil preparation, sowing timely appropriate light, such as promoting wheat seeding emergence, fast out of Qi Miao measures are preventive effect. Chemical control is the focus of wheat plumule and bud stage. Advocate the use of disease free seed and the seed dressing or seed coating. In addition, different varieties of wheat to wheat stem smut resistance can vary greatly, selecting resistant varieties. Go up century fifty or sixty time our country rely on these measures, the basic control flag smut damages, and in recent years the disease in some areas with heavy occurrence is mainly due to relaxation of prevention and control work, specific area is caused by seeds.

        TypeInfo:-永利402 Common sense

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