What is the reason for the rotten roots of green radish
Green radish is a common green plant in the home, and the problem of rotten roots puzzles many flower friends. Root rot not only affects plant growth, but can lead to the death of the entire plant in severe cases. Mastering scientific judgment and first aid methods can bring your green radish back to life. Detailed explanation of the four major causes of green radish rot roots caused by temperature imbalance causes frostbite of roots. Green radish is extremely sensitive to temperature, and 15-25℃ is the ideal growth range. When the room temperature falls below 10℃ in winter, the activity of root cells decreases, and continuous low temperature causes the cell membrane to rupture, forming transparent frozen rotten roots. Before heating in the north, special attention should be paid to the insulation of windows. Soaking in stagnant water causes hypoxia and rot. Although green radish likes to get wet, it is advisable to plant pottery pots and water them for 7-10 days. Long-term accumulation of water will form an anaerobic environment, the roots will not be able to breathe aerobically, and harmful bacteria will multiply in large numbers. The humidity of the pot soil can be detected by the bamboo stick insertion method, and water it when it is 2/3 of the depth is dry. Soil-borne diseases such as Fusarium and Pythium invade through wounds. At the beginning of infection, brown spots appear on the root tips and gradually spread to form black decay zones. Ventilation needs to be strengthened during the rainy season and Bacillus subtilis should be used regularly for biological prevention. Fertilizer damage burns root tissues. Direct irrigation with concentrated nutrient solution and application of undecomposed organic fertilizers can cause salt accumulation. When white crystals are visible to the naked eye on the surface of the basin soil, it means that fertilizer damage has occurred. It is recommended to adopt the principle of "applying thin fertilizer frequently" and apply diluted liquid fertilizer at 2000 times once a month in spring and autumn. The four-step first-aid method saves endangered plants, accurately prunes the damaged roots, and then washes the root mass with running water. Use disinfectant scissors to cut obliquely at 45° to remove the black rot parts, retaining the milky white healthy root system. When the incision area exceeds 1cm², Yushang ointment needs to be applied to prevent secondary infection. The double disinfection and sterilization treatment uses a warm water bath at 50 ° C for 10 minutes to kill the nematodes, and then soaked in 1000 times potassium permanganate solution for 30 minutes. When drying the roots, place them in a cool and ventilated place, and wait until the incision forms a protective film before placing them in the pot. Scientifically mix soil to rebuild the environment. Prepare new soil according to the ratio of coconut bran: perlite: humus soil =3:1:1, and add 5% bamboo charcoal particles to enhance air permeability. Select a porous pottery basin at the bottom and lay a 3cm ceramsite drainage layer. The key points of postoperative maintenance are to maintain scattered light during the seedling period, and control water for 15-20 days to promote new roots. After the new leaves germinate, spray seaweed on the leaves every week to enhance resistance. Apply EM bacterial solution every month to improve soil microecology.
Through systematic prevention and scientific maintenance, 85% of rotten roots and green radish can be restored to vitality. It is recommended to check the root status every quarter and adjust the maintenance plan in a timely manner so that green radish can continue to grow vigorously.