What causes root rot in hydroponic plants? How to deal with it after root rot
Anyone who loves growing green plants knows that most hydroponic plants are "lazy person" plants, generally easier to grow than soil-grown plants. But if you neglect them too much or handle them improperly, root rot can also occur. If you see that the plant's roots have turned yellow or black, or the water smells bad, it is basically root rot. What should you do then? Today the editor will explain the causes of root rot in hydroponic plants and the solutions, hoping to help everyone better understand their own hydroponic plants.
I. Analysis of the causes of root rot in hydroponic plants
1. The dissolved oxygen content in the hydroponic nutrient solution is low, causing the plant roots to die from lack of oxygen. This situation is more obvious in summer. At this time you can increase the number of pump circulation cycles and the duration. To raise the dissolved oxygen content in the nutrient solution.
2. The nutrient solution submerges all the roots and even the root crown. This is also an easily overlooked point in home soilless cultivation. Generally, the best cultivation is to leave half of the roots in the nutrient solution and expose the other half to the air. This can greatly increase the oxygen supply to the plant roots and can effectively reduce the occurrence of root rot.
3. Check the water quality of the nutrient solution. Residual plant fragments or residual substrate, nutrient solution sediment, etc. in the water cause the water quality to deteriorate. If the water is found to be relatively turbid or has an off odor, change the water in time to ensure normal plant growth.
4. During cultivation, the supply of nutrient solution can be appropriately reduced, because water quality conditions differ from region to region. In areas with hard water, precipitation is likely to occur when preparing the nutrient solution. If the water in your area is relatively hard, you can choose to use 1/2 or 1/4 of the normal dose to prepare the nutrient solution.
5. The pH of the water changes too greatly. Generally, with a mature formula, when the nutrient solution is added or replaced within the specified time. The PH change will not vary too much. However, users had better still prepare a pack of PH test paper. You can monitor it regularly and keep informed. The suitable range for most plants is between PH5---7. Of course, special plants are exceptions.
6. Temperature. The temperature here largely refers to the temperature of the nutrient solution. Because high temperatures can cause the aging of plant roots. Therefore, the maximum temperature of the nutrient solution should not be maintained for a long time in an environment above 30 degrees. This is a major factor in summer. The usual solution is to avoid direct sunlight on the reservoir tank. Add shade when necessary.
II. Treatment methods for root rot in hydroponic plants
1. After discovering root rot, cut off the rotten parts as soon as possible, then put them in carbendazim or thiophanate-methyl (a broad-spectrum, high-efficiency, low-toxicity systemic fungicide, with systemic, preventive, protective and therapeutic effects. Sold at flower markets, a few yuan per pack) for disinfection. You can put the fungicide into the water and soak the roots for one day, then replace it with new tap water the next day.
2. After the plant develops root rot, just use clean water to grow it. Wait until the plant adapts to the environment and grows new roots before adding nutrient solution.
Causes of root rot in hydroponic plants and how to deal with it after root rot
China Landscape Web August 4 news: Anyone who loves growing green plants knows that most hydroponic plants are "lazy person" plants, generally easier to grow than soil-grown plants. But if you neglect them too much or handle them improperly, root rot can also occur. If you see that the plant's roots have turned yellow or black, or the water smells bad, it is basically root rot. What should you do then? Today the editor will explain the causes of root rot in hydroponic plants and the solutions, hoping to help everyone better understand their own hydroponic plants.
I. Analysis of the causes of root rot in hydroponic plants
1. The dissolved oxygen content in the hydroponic nutrient solution is low, causing the plant roots to die from lack of oxygen. This situation is more obvious in summer. At this time you can increase the number of pump circulation cycles and the duration. To raise the dissolved oxygen content in the nutrient solution.
2. The nutrient solution submerges all the roots and even the root crown. This is also an easily overlooked point in home soilless cultivation. Generally, the best cultivation is to leave half of the roots in the nutrient solution and expose the other half to the air. This can greatly increase the oxygen supply to the plant roots and can effectively reduce the occurrence of root rot.
3. Check the water quality of the nutrient solution. Residual plant fragments or residual substrate, nutrient solution sediment, etc. in the water cause the water quality to deteriorate. If the water is found to be relatively turbid or has an off odor, change the water in time to ensure normal plant growth.
4. During cultivation, the supply of nutrient solution can be appropriately reduced, because water quality conditions differ from region to region. In areas with hard water, precipitation is likely to occur when preparing the nutrient solution. If the water in your area is relatively hard, you can choose to use 1/2 or 1/4 of the normal dose to prepare the nutrient solution.
5. The pH of the water changes too greatly. Generally, with a mature formula, when the nutrient solution is added or replaced within the specified time. The PH change will not vary too much. However, users had better still prepare a pack of PH test paper. You can monitor it regularly and keep informed. The suitable range for most plants is between PH5---7. Of course, special plants are exceptions.
6. Temperature. The temperature here largely refers to the temperature of the nutrient solution. Because high temperatures can cause the aging of plant roots. Therefore, the maximum temperature of the nutrient solution should not be maintained for a long time in an environment above 30 degrees. This is a major factor in summer. The usual solution is to avoid direct sunlight on the reservoir tank. Add shade when necessary.
II. Treatment methods for root rot in hydroponic plants
1. After discovering root rot, cut off the rotten parts as soon as possible, then put them in carbendazim or thiophanate-methyl (a broad-spectrum, high-efficiency, low-toxicity systemic fungicide, with systemic, preventive, protective and therapeutic effects. Sold at flower markets, a few yuan per pack) for disinfection. You can put the fungicide into the water and soak the roots for one day, then replace it with new tap water the next day.
2. After the plant develops root rot, just use clean water to grow it. Wait until the plant adapts to the environment and grows new roots before adding nutrient solution.
Causes of root rot in hydroponic plants and corresponding measures
Hydroponics is a new type of plant cultivation method. By naturally spreading the plant's root system in a nutrient solution, the nutrient solution is used to provide the substances and elements the plant needs. It is also a type of soilless cultivation. Plants grown through hydroponics have a relatively clean and tidy appearance and a high level of style and ornamental value. They are often used for indoor decoration and have won praise from a wide range of consumers.
However, because hydroponic technology is not yet perfect, hydroponic plants encounter a series of problems during growth such as nutrient deficiency and oxygen shortage, causing the plants to show malnutrition, yellowing leaves, reduced quality, and even root rot. Especially now, when it is summer, which is a season when root rot in hydroponic plants often occurs, everyone should better understand the causes of plant root rot and master the corresponding countermeasures.
There are many causes of root rot in hydroponic plants. First, due to the rise in temperature, the concentrations of some hormones in the plant change very dramatically. For example, cytokinins and auxins decrease greatly, while abscisic acid content rises sharply, thus causing plant root rot. Second, due to the rise in temperature, the solubility of oxygen in water decreases greatly, and the reproductive capacity of microorganisms in the water increases, consuming more oxygen. The oxygen concentration in the water falls below the critical value required for plant respiration, so the plant develops root rot from oxygen deficiency. Furthermore, due to the rise in temperature, the enzyme activity in the plant roots decreases greatly, blunting a series of reactions in the plant, thus accelerating root aging and causing plant root rot. In addition, high temperatures favor the growth of microorganisms, and a large number of bacteria easily breed in the water, damaging the root system and causing root rot.
In response to the above causes, in order to solve the root rot problem in hydroponic plants, first the water temperature needs to be controlled within the range of 18-28 degrees Celsius, which is more suitable for plant growth. In an environment without cooling measures, you can enlarge the container of the hydroponic plant, or place it in a cool place to achieve a cooling effect. In addition, you can speed up the oxygen cycle, adopt aeration measures, and so on to solve this problem. For the bacteria in the water, you can add a certain concentration of hydrogen peroxide to the solution, or sterilize by methods such as ozonation and ultraviolet irradiation. This is an effective way to prevent bacterial root rot.
Overall, in order to prevent root rot, ensure that the nutrient solution has a sufficient oxygen supply and maintain a suitable temperature for plant growth. With the methods above mastered, I believe everyone can certainly take good care of the hydroponic plants at home and maintain their good growth. In this way, the hydroponic plants you grow can not only decorate the indoor style, but also purify the air, benefiting a healthy home life.