What's wrong with dried cloves?
As a common ornamental plant in the courtyard, the drying up of lilac leaves often disturbs gardeners. This article systematically analyzes the three main reasons for leaf dryness and provides targeted solution strategies to help you quickly restore plant health. 1. Nutrient imbalance leads to dryness of leaves 1.1 Analysis of the causes of nutrient deficiency Cove consumes about 0.3g of nitrogen, phosphorus and potassium per day during the growth period from April to September. If decomposed organic fertilizer or compound fertilizer is not replenished in time, the plant will preferentially deliver nutrients to the new buds and leaves, causing typical nutrient deficiency symptoms such as scorched leaf tips and yellowing veins in old leaves. 1.2 The scientific fertilization plan recommends adopting a "three-stage" fertilization method: applying nitrogen and phosphate fertilizer (10:5:5) during germination period to promote shoot extraction, adding phosphorus and potassium fertilizer (5:10:10) before flowering, and supplementing all-element slow-release fertilizer after flowering. Under the principle of thin fertilizer and frequent application, diluted liquid fertilizer should be applied every 10 days during the growth period, and fertilization should be stopped during the dormant period. 2. Improper water management 2.1 Identification of drought symptoms When the soil water content is less than 40%, cloves will activate self-protection mechanisms, which is manifested as the lower leaves wilting first, followed by curling leaf margins and brown spots on the leaves. In severe cases, the whole leaves will become brittle and fall off. 2.2 The precise irrigation technique uses the "knuckle detection method": insert the index finger into the second knuckle in the soil, and water it if it is dry. Pour water once in the morning and evening in summer to keep the soil moist but no water accumulation. It is recommended to use a drip irrigation system to irrigate 30cm deep soil at a time. 3. Disease infection control strategies 3.1 Common disease identification (T-J) The typical symptoms of the disease are concentric ring spots on the leaves, and the spread of spores accelerates when the humidity is greater than 80%. Powdery mildew appears as white powder on the back of the leaves, and the incidence increases with the increase of temperature difference between day and night. 3.2 The comprehensive prevention and treatment plan found that the diseased leaves were immediately pruned and burned, and the wounds were smeared with thiophanate-methyl ointment. Alternate use 25% azoxystrobin suspension (1500 times solution) and 80% mancozeb (800 times solution) for prevention, spraying once every 15 days.
Through three-dimensional management of nutrition regulation, water optimization and disease control, cloves leaves can be effectively prevented from drying out. It is recommended to establish a maintenance log to record fertilization and watering time and plant reactions, and gradually master personalized maintenance plans. Regularly inspect leaf backs, stalks and other easily neglected parts to achieve early detection and early treatment.