What is the cause of plum blossom (plum blossom) root rot
As a traditional famous flower in China, plum blossoms are deeply loved by horticulture enthusiasts for their ability to bloom amidst snow and frost. However, during the maintenance process, it is often troubled by the problem of plum blossom root rot, which not only affects the quality of flowering but can even lead to the death of the plant in severe cases. This article will systematically analyze the issue of plum blossom root rot from the pathogenic mechanism to the treatment plan.
Depth analysis of the four main causes of plum blossom (plum blossom) root rot
Soil Structure Imbalance
Heavy and compacted soil is the primary culprit for plum blossom root rot. Experimental data shows that when the soil porosity is below 30%, the root respiration efficiency decreases by 60%. It is recommended to use a mixed matrix of decomposed leaf soil + coarse river sand + vermiculite (proportion 5:3:2) and to turn over and replace the soil every spring.
Water Management Out of Control
Waterlogging creates an anaerobic environment that causes plum blossom roots to start rotting within 48 hours. Use the 'wet and dry' watering method: water once every 10 days in winter, and 3-5 days in summer. During the rainy season, elevate the flower pot by 15 cm and use ceramic stones to create a drainage layer.
Improper Fertilization Operation
High-concentration fertilizers can burn the fine roots of plum blossoms. Data shows that unripe organic fertilizer can cause the soil EC value to instantly rise to 3.5mS/cm (the safe threshold is 1.8mS/cm). It is recommended to use diluted amino acid water-soluble fertilizer at a ratio of 2000 times, applied once a month.
Urgent Treatment Plan for plum blossom (plum blossom) Root Rot
Immediate action is required upon detecting root rot: 1. Cut off the blackened and rotting roots until white tissue is exposed 2. Soak in a 1000-fold potassium permanganate solution for 30 minutes 3. Dry the roots in a shaded and well-ventilated area for 48 hours 4. Replant using soil mixed with carbendazim. After treatment, maintain an environmental humidity of 60%-70% and avoid direct sunlight.
By scientifically mixing soil, precisely controlling water, and fertilizing rationally, the problem of plum blossom root rot can be effectively prevented. It is recommended to use a soil tester monthly to monitor the pH value (5.5-6.5 is ideal) and EC value, and adjust the management plan in combination with seasonal maintenance to keep the plum blossoms vigorous and healthy.