What are the precautions for growing Chinese chives in summer?
What problems should be noted when growing Chinese chives in summer? Please give guidance. In summer, high temperatures and heavy rain are common. Summer management of Chinese chives should focus on weed removal, drainage of waterlogging, strengthening fertilizer and water management and pest and disease control, and reducing the number of harvests to promote vigorous growth of Chinese chives. No cutting. High summer temperatures lead to low nutrient accumulation and high consumption in Chinese chives, ...
What problems should be noted when growing Chinese chives in summer? Please give guidance
In summer, high temperatures and heavy rain are common. Summer management of Chinese chives should focus on weed removal, drainage of waterlogging, strengthening fertilizer and water management and pest and disease control, and reducing the number of harvests to promote vigorous growth of Chinese chives.
No cutting. High summer temperatures lead to low nutrient accumulation and high consumption in Chinese chives, affecting plant growth, and the leaf tissue fibers increase, the texture becomes coarse, and growth weakens. From late June to early August, harvesting should stop to favor root development. In August to September, 1 to 2 harvests can be made, and after late September harvesting should stop. For the last harvest, the stubble should be left slightly higher. Especially for Chinese chives planted the year before last, stop harvesting during the high-temperature period in summer, and sprinkle water with a watering can once each morning and evening to keep the soil surface moist, but do not pour water over them. Due to favorable factors such as no cutting, sufficient fertilizer and water, and vigorous growth, Chinese chives often lodge in summer. After lodging, they rot easily and this induces phytophthora blight, causing death. Measures to prevent lodging are: do not apply excessive nitrogen fertilizer; do not overwater; prevent waterlogging diligently during rainstorms; when Chinese chives may lodge because the leaves are too long, cut the chive leaves shorter.
Weeding. High temperatures in summer and abundant rain in autumn cause weeds to grow and affect the growth of Chinese chives, so they should be pulled out promptly.
Remove the bolts. Because flowering and seed setting in Chinese chives consume a large amount of nutrients, affecting plant growth, tillering and nutrient accumulation, and thus affecting the yield of the following year. Therefore, except for seed-production fields, the young chive bolts should also be removed promptly to cultivate high-yielding plants.
Prevent and control Fusarium wilt. High temperatures in summer and autumn, or scorching sun after rain, make Fusarium wilt likely to occur. The symptoms are water-scalded lesions near the ground, and in severe cases the whole plant dies. In management, pay attention to drainage and waterlogging prevention and remove yellow leaves to keep good ventilation between rows and reduce disease damage. Root irrigation with 50% carbendazim 500 times dilution can also be used to prevent the disease.
Prevent and control chive maggots. Chive maggots occur rather seriously in summer. A 50% phoxim 800 times dilution can be used and slowly flowed into the water furrow together with irrigation. You can also broadcast phoxim granules when fertilizing and preparing the soil after cutting Chinese chives, or during the peak occurrence of chive maggot larvae apply 20% "Chive Maggot Clean" 0.75 to 1 kg per mu diluted in 1000 kg water for root irrigation.
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