How to prevent garlic tip dry

Garlic tip drying is a common issue caused by several factors, including root rot, leaf spot, and herbicide damage. The occurrence of dry tips varies depending on the growth stage of the garlic plant. During the seedling phase (around October) and the regreening period in early spring (March of the next year), garlic plants are particularly vulnerable to tip drying. In the seedling stage, the drying of garlic tips is primarily due to physiological stress. High temperatures under mulch film can cause root burn, which hinders nutrient absorption and leads to insufficient leaf development. This results in dry or even dead leaf tips. To avoid this, it's important not to plant too early in autumn and to remove the mulch film promptly when temperatures start to drop. During the regreening stage in early spring, tip drying is often linked to root rot. Root rot is typically caused by bacterial infections. Once infected, the primary roots begin to decay from the tip towards the base, followed by secondary roots. In severe cases, the entire root system rots, emitting a foul odor. This weakens the plant, leading to yellowing leaves, soft rot along the veins, stunted growth, and even plant death. Additionally, widespread tip drying in spring is often associated with planting garlic after corn without proper soil disinfection. Over time, pathogens accumulate in the soil, worsening root rot and causing dry tips. To prevent garlic tip drying in spring, it's crucial to sterilize the soil before planting. In September, the soil should be exposed to sunlight for at least one month prior to planting. Deep plowing (at least 20 cm) is recommended, followed by crop rotation and the use of lime, biological agents, or carbendazim for disinfection. Seed treatment is also effective—mix 150 grams of Daning wettable powder with 8 kg of water per 100 kg of garlic seeds, spray evenly, and let them dry before planting. If root rot occurs during the growing season, apply 30 grams of bronchobacterin (20% thiazole copper suspension concentrate) mixed with 40–60 ml of water per acre, or use 30–60 grams of 50% chlorocyanilic acid wettable powder mixed with 50 kg of water. Spray or drench the roots, repeating every five days for two to three times. Remove severely affected or dead plants immediately and take them out of the field to prevent disease spread. Author: Qi Liming

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