Seed Treatment, Disease Prevention, and Pest Control
In the past two years, disease management has become a major challenge, particularly with the rapid spread of wheat head blight. Post-emergence chemical treatments have not been very effective, making it essential to focus on preventive measures during sowing. Seed dressing at planting time can effectively kill pathogens in the soil and on the seed surface, while also offering some protection against diseases like wheat sheath blight, smut, and root rot. The recommended method is to mix 50–100 ml of 3% Fuberidazole with 10–20 ml of 2.5% Triadimenol in 100–150 ml of water, which is sufficient for treating 10 kg of wheat seeds (equivalent to one mu). Alternatively, 20–40 ml of 12.5% Tebuconazole aqueous suspension can be mixed with 150 ml of water for the same amount of seeds. In addition, due to the heavy buildup of pathogens in the soil, deep plowing to a depth of 40 cm during sowing can help reduce disease incidence. For controlling underground pests such as wireworms and grubs, it is advisable to use 40% Chlorpyrifos at a rate of 100 g per 3 kg of water or 20% Dimephos at 150 g per 3 kg of water. Mix the solution evenly and spray it onto 50 kg of wheat seeds. After air-drying, the seeds can be sown, effectively preventing damage from underground pests. Biogas slurry treatment enhances wheat resistance. Place the seeds in a breathable, durable, and clean plastic bag—avoid overfilling since the seeds will swell when soaked. Typically, each bag should contain 15–20 kg of seeds. Submerge the bag into the biogas slurry in the middle of the digester's discharge chamber. Secure the bag using a wooden stick and rope so that it remains suspended. Soak the seeds for about 12 hours, then remove the bag, drain the slurry, rinse the seeds with clean water, dry them, and proceed with sowing. When selecting seeds, avoid using wheat from fields with severe issues like stem rust, head blight, and smut. The surface of the seeds may carry harmful bacteria, so harvested wheat must be strictly avoided. Additionally, weeds such as wild oats and sectioned wheat have become problematic in recent years. These weeds are difficult to control, often mix with the wheat, and should not be used as seeds. It is not advisable to apply insecticides during sowing to control wheat midge. At this stage, the midge larvae are dormant at a depth of 15–20 cm, and they do not feed or interact with the environment. Therefore, chemical treatments are largely ineffective. The two most critical periods for managing wheat midge are: first, applying poisoned soil during the flood season, typically around mid-April; second, spraying adult midges in early May. Proper timing is crucial for effective control.Flame Retardant Series,Diffuse White Sunshade Curtain,Customized Agriculture Long Durability,Sun Shade Netting Shade Cloth
Changzhou Green Nets Co.,Ltd. , https://www.czglnets.com