Occurrence and Control Techniques of Millet Diseases

The main diseases of millet include millet white incidence, millet rust, wheat gluten, foliar leaf spot, and millet brown stalk disease.

Millet leaf spot mainly damages the leaves. Leaf spot oval, 2-3 cm in size, middle grayish brown, brown to reddish brown. A small black spot was generated on the later stage of the lesion, ie, the pathogenic conidia. In the early stage of onset, spray 36% Thiophanate-containing Suspension 500-600 times or 50% Carbendazim Wettable Powder 600-800 times, 60% Anti-mildew Po Ultra Micro-Wet Powder 800 times 30% Alkaline Sulfuric Acid The copper suspension agent is 400 times liquid, sprayed once every 10 days or so, and continuously controlled 2-3 times.

Millet white seedlings were damaged after they were killed. The leaves of the millet were gray and white, and they were called gray backs. In the flag leaf stage, the top three or four leaves are damaged, the leaves turn yellow, and there are gray and white molds, which are called white tips. After this, the tissue was necrotic, leaving only the veins, which were hair-like. It was called white disease. The ear of the plant was deformed and the grain became acicular, which was called the thornhead. With 50% carbendazim wettable powder 600-800 times the liquid before and after heading to prevent spraying.

In the grain filling stage after the heading of millet rust millet, a large number of reddish-brown round or oval spots are scattered on both sides of the leaves, especially on the back surface, and yellow-brown powdery spores can be scattered. Like rust, it is a typical symptom of rust. Leaves the leaves dead. When the diseased leaf rate reaches 1%-5%, the first spraying can be performed with 15% triadimefon 600 times liquid. After every 7-10 days, make a second spraying as appropriate.

The typical lesions of gluten-free leaves are spindle-shaped, grayish-brown or gray-brown in the center and dark brown in leaf margin. When wet, leaves appear on the back of the mold, and when the stem and stem become severe, they become dead. At the beginning of the onset, 65% of mancozeb manganese 500-600 times was sprayed on the field, or typhoid-methyl 200-300 times liquid was sprayed on the foliage for prevention and treatment.

The incidence of grain brown bar disease, can be used 72% of the streptomycin or 20% copper suspension of the cedar suspension foliar spray, sprayed once every 7 days, it is best to spray 2-3 times. For the severely damaged plots, the old leaves should be stripped and the invalid stems and over dense and poorly growing plants should be removed. Ventilation and ventilation should be conducted to reduce the temperature.

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