Corn seedling management measures

How to apply seed dressing? What is the role of seed dressing?

2.5% Shiloe Seed Coating Agent 10g plus Tianda 2116 (for dip and seed dressing) 12.5g plus 50% phoxim 10ml water 100ml 5kg corn seed, soak after drying (mu seed rate 2- 2.5 kg).

Corn seed dressing can control corn smut, seedling blight, sheath blight, aphids, and thrips, and has the effect of both treatment of mosaic disease and dwarfism.

How to identify and control corn large and small leaf spot disease?

Maize leaf spot and corn leaf spot mainly damage the leaves and sometimes invade the leaf sheath and temporal lobe. In addition to damaging these sites, small spot disease can also damage the ear. These two diseases are often collectively referred to as "corn spot."

The typical symptoms of corn spot disease are rapid expansion from small lesions to large rhomboids, up to 10-30 centimeters in length. Some long spots even exceed 30 centimeters. Sometimes several lesions are connected together to form irregularities. Big spot. The lesions were initially immersed in water and soon turned to grayish blue, eventually turning brown with dead spots. When the air is wet, black molds can grow on the lesions.

Symptoms of corn leaf spot are characterized by small lesions, generally no more than 1 cm in length, and limited to only two veins, nearly elliptical, with a darker, darker rim. In addition, the number of lesions is generally more. The pathogenic bacteria of large and small spotted corn are overwintering on contaminated spores on the contaminants, or wintering on mycelia in diseased tissues, and the first infection caused by spore germination in the second year. Produce a large number of conidia, causing re-infection.

Prevention and control points: In the early stage of disease, 50% of the enemy will be used for 0.5 kg, or 50% of thiophanate-methyl, or 50% of the TBV-2000-3000 times + Tianda 2116 grain type 600 times + Tianda Yufeng 1500-2000 Liquid spray, spray 2-3 times, spray once every 10-15 days. Or use 50% Tianda procymidone 50-100g to spray 1-2 times from the end of the leaf to the silking stage. The above-mentioned pharmaceuticals are blended 3000 times with the organic silicon, saving time and labor, no need to re-spray when it rains, Better results.

How to prevent corn rust?

Corn rust occurs only occasionally in summer when there is much rain in summer. In the early stage of disease, it is sprayed with 20% triadimefon 1000 times. After 10 days, it can be controlled with 3000 times spray at 10%. The above bactericide is 1000 times. Tianda 2116 is used in combination. The above-mentioned agents are blended 3000 times the amount of organic silicon, saving time and labor, no need to re-spray when it rains, and the disease prevention effect is better, and the output is obviously improved.

How to prevent corn seedling blight?

Maize seedling blight is a newly discovered disease. Viewing from the fields, the occurrence of heavy weight on Yandan No. 17 corn is basically not affected by dressing with Shile. After the diseased plant was found, the mixture was sprayed with 99% Tiandaxymycin 6000 times and 1000 times Tianda 2116. After 10 days, it was sprayed once again with the above method, and the basic control was harmed. The above-mentioned pharmaceuticals are blended up to 3000 times the amount of organic silicon, which saves time and labor, and it is no longer necessary to re-spray the rain, which has better results.

How to prevent corn rough dwarf disease and dwarf mosaic disease?

Maize rough dwarf disease and dwarf mosaic disease are transmitted by aphids and migratory locusts. Based on the seed dressing, four-leaf corn can be sprayed with 3% acetamiprid 2000 times and Tianda Yufeng 1500 times. The prevention of viral diseases; the occurrence of viral disease, with Tianda Yufeng 1000 times 1000 times Tianda 2116 mixed spray, have a good inhibitory effect. The above-mentioned pharmaceuticals are blended 3000 times as much as silicone, which saves labor and time, and it is no longer necessary to re-spray when it rains.

How to use herbicide before seeding after corn sowing?

Before sowing, after corn sowing, mu 50% acetochlor 150 ml plus 50% paracetamol 100 g (or 40% Dangcao EC 250 ml) spray 50 kg of water; the above two methods, as long as the spray is even and timely, It can control weeds in the whole growth period of corn. The above-mentioned pharmaceuticals are blended up to 3000 times the amount of organic silicon, which saves time and labor, and it is no longer necessary to re-spray the rain, which has better results.

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