Causes of Milan leaf black stems The impact of Milan leaf black stems Control measures Milan leaf black stems are a plant disease that has frequently appeared in Milan in recent years. This disease not only affects the ornamental value of Milan, but may also affect Milan's growth and reproduction have serious effects. This article will deeply discuss the causes, effects and control measures of Milan leaf black stems, providing practical reference for the majority of horticulture enthusiasts. The main reasons for black stems in Milan leaves are as follows: 1. Funeral infections: Black stems in Milan leaves are mainly caused by fungal infections, such as black spot fungus, anthrax fungus, etc.
2. Environmental factors: Environmental factors such as long-term rainy weather, poor ventilation, and insufficient light will cause black and dry leaves in Milan.
3. Improper maintenance: Maintenance problems such as improper fertilization, untimely watering, and untimely pruning can also cause black dryness of Milan leaves. The influence of Milan's leaves and black stems The influence of Milan's leaves and black stems on Milan is mainly reflected in the following aspects: 1. Reduced ornamental value: The leaves turn black and dry, which seriously affects the ornamental value of Milan.
2. Growth arrest: When the disease is severe, it will cause slow growth and even death in Milan.
3. Reproduction is hindered: Black stems of leaves will reduce Milan's reproductive ability and affect the inheritance of the variety. Control measures are aimed at black and dry leaves in Milan. The following are some effective control measures: 1. Strengthen maintenance: Keep Milan well ventilated, avoid long-term rainy weather, appropriately increase light, and keep the soil moist.
2. Trim diseased branches: prune diseased branches when discovered and destroy them centrally to prevent the spread of bacteria.
3. Use of fungicides: In the early stage of the disease, fungicides such as 50% carbendazim wettable powder 1000 times solution and 70% thiophanate methyl wettable powder 1000 times solution can be used to spray.
4. Reasonable fertilization: Apply fertilizer reasonably according to Milan's growth needs to avoid excessive fertilization.
5. Choose disease-resistant varieties: When purchasing Milan, try to choose varieties with strong disease resistance.
Milan leaf black stem is a common plant disease. Understanding its causes, effects and control measures will help us better maintain Milan. In daily life, we must pay attention to Milan's growth conditions and detect and deal with diseases in a timely manner. To ensure the healthy growth of Milan.
References: [1] Zhang Wei, Li Xiaodong. Diagnosis and control of plant diseases [M]. Beijing: China Agricultural Press, 2018.
[2]Wang Rui, Liu Yang. Plant disease control technology [M]. Beijing: China Agricultural Press, 2017.
[3]China Horticultural Society. Handbook for Horticultural Pest Control in China [M]. Beijing: China Agricultural Press, 2016.