Causes of blackening and long spots on green radish leaves. Prevention and control methods of blackening and long spots on green radish leaves As a common plant used in indoor decoration, green radish is deeply loved by people for its unique air purification ability and beautiful appearance. Many green radish lovers During the maintenance process, we will encounter the problem of black and long spots on the leaves, which not only affects the appearance of green radish, but may also threaten its health. This article will analyze in detail the reasons for black and long spots on green radish leaves, and provide effective prevention and control methods. Reasons for black and long spots on green radish leaves 1. The most common reason for infection with black and long spots on green radish leaves is bacterial infections, such as leaf spot, anthrax, etc. These bacteria will invade the leaves under appropriate conditions, causing Black spots appear on the leaves.
2. Green radish prefers a semi-cloudy environment if it is in the dark for a long time, the leaves will grow poorly due to lack of light, resulting in black and long spots.
3. Improper watering is a key link in the maintenance of green radish. Too much or too little watering may cause the leaves to turn black and long spots. Too much watering will cause the roots to lack oxygen and cause the roots to rot; too little watering will cause the leaves to lose water, causing the leaves to wither.
4. Improper fertilization. Too much or too little fertilization will affect the growth of green radish. Too much fertilization will lead to leaf hypertrophy and spots; too little fertilization will cause the leaves to be malnourished and black and long spots.
5. Environmental factors such as large indoor and outdoor temperature differences, air pollution, and harmful gases can also cause blackening and long spots on green radish leaves. Prevention and control methods for blackening and long spots on green radish leaves 1. When the leaves are found to have spots when bacterial infections, the diseased leaves should be cut off in time, and 75% alcohol or 1% copper sulfate solution should be used to disinfect the diseased leaves, and indoor ventilation should be maintained. Avoid the breeding of bacteria.
2. Adjust the light and place the green radish in a semi-cloudy environment to avoid being in the dark for a long time. During the high temperature periods in summer, the shade can be appropriately shaded to prevent sunburn of the leaves.
3. Control watering According to the growth habits of green radish, water it in a timely manner. Pay attention to observe soil moisture when watering to avoid too much or too little watering.
4. Reasonable fertilization According to the growth stage of green radish, reasonable fertilization can be applied. Fertilizer can be appropriately increased during the period of vigorous growth, and fertilization should be reduced during the period of slow growth.
5. Improve the environment to maintain indoor ventilation, reduce the impact of harmful gases and pollutants, and appropriately increase indoor temperature in winter to avoid excessive temperature differences.
There are many reasons for blackening and long spots on green radish leaves, but as long as you master the correct maintenance methods, you can effectively prevent and treat them. I hope this article can provide useful reference for green radish lovers and let your green radish thrive.