What to Do When Tulips Get Southern Blight? Symptom Identification and Control Methods
Although tulips (detailed introduction) are not very difficult to grow, they are still prone to disease if care is neglected. Southern blight is one of the more common diseases of tulips and can cause the entire plant to wither. Let me give you a detailed introduction to the symptoms, causes, and control methods of this disease.
Tulip (detailed introduction)
I. Symptoms:The entire plant withers, with white fungal strands or rapeseed-like tan-colored small sclerotia winding around the stem base, and the affected area turns brown, rots, and decays. Large amounts of white fungal strands and tan-colored fungal bodies are visible on the soil surface.
II. Causes:
a. The pathogen overwinters in the soil as sclerotia or fungal strands on diseased plant debris. When conditions are suitable the following year, the sclerotia or fungal strands produce hyphae for primary infection.
b. The silk-like hyphae produced by the plant extend to contact neighboring plants, or the sclerotia spread through water flow for secondary infection, causing the disease to spread and expand. The disease is severe in years or seasons with continuous cropping, heavy clay soil, low-lying terrain, or high temperature and humidity.
III. Control Methods:When diseased plants are found, promptly pull them out and burn them. Drench the diseased holes and neighboring plants with a 1000-1600 times dilution of 5% validamycin aqueous solution, or a 500-600 times dilution of 50% tian'an aqueous solution, or a 1000 times dilution of 20% tolclofos-methyl emulsifiable concentrate, or a 500 times dilution of 90% dexon wettable powder, applying 0.4-0.5 liters per plant (hole). When plowing, mix in 100-150 kg of lime powder per mu to make the soil slightly alkaline, which can inhibit the reproduction of the southern blight pathogen.
How to Control Tulip Southern Blight
Tulips are very beautiful and loved by many people. They are a very common ornamental flower. Tulips are not only world-famous bulb flowers and excellent cut flower varieties, but also have sturdy, upright stems, elegant and beautiful leaf colors, and lotus-like flowers that are dignified and charming. In Europe and America, they are regarded as a symbol of victory and beauty, and the Netherlands, Iran, Turkey, and many other countries treasure them as national flowers. They transform dampness and dispel filth. They also have medicinal value, mainly for dampness and turbidity in the spleen and stomach; chest and epigastric fullness; vomiting and abdominal pain; bad breath with greasy tongue coating. However, during the growing process, they are always threatened by pests and diseases. Below, I will share with you how to control tulip southern blight.
Root lice feed on the bulbs in the soil, burrow into the epidermis to suck sap, causing the plant to grow weak or become prone to rotting or disease. Soak infested bulbs in dilute limewater for 10 minutes, then remove and rinse clean to kill the root lice.
Symptoms: The entire plant withers, with white fungal strands or rapeseed-like tan-colored small sclerotia winding around the stem base, and the affected area turns brown, rots, and decays. Large amounts of white fungal strands and tan-colored fungal bodies are visible on the soil surface.
Pathogen: Sclerotium rolfsii Sacc., called southern blight, belongs to the Deuteromycotina fungi. The hyphae are white and silk-like, spreading in a fan or radial pattern, later gathering into fungal strands or tangling into sclerotia. The sclerotia resemble rapeseeds, initially white to yellowish-white, later turning tan-brown, round, with a smooth surface. In addition, it has been reported that Corticium rolfsii (Secc.) Cyrzi. is also a pathogen of this disease.
Transmission Routes of Tulip Southern Blight
1. The pathogen overwinters in the soil as sclerotia or fungal strands on diseased plant debris. When conditions are suitable the following year, the sclerotia or fungal strands produce hyphae for primary infection.
2. The silk-like hyphae produced by the plant extend to contact neighboring plants, or the sclerotia spread through water flow for secondary infection, causing the disease to spread and expand. The disease is severe in years or seasons with continuous cropping, heavy clay soil, low-lying terrain, or high temperature and humidity.
Control Methods for Tulip Southern Blight:
When diseased plants are found, promptly pull them out and burn them. Drench the diseased holes and neighboring plants with a 1000-1600 times dilution of 5% validamycin aqueous solution, or a 500-600 times dilution of 50% tian'an aqueous solution, or a 1000 times dilution of 20% tolclofos-methyl emulsifiable concentrate, or a 500 times dilution of 90% dexon wettable powder, applying 0.4-0.5 liters per plant (hole). When plowing, mix in 100-150 kg of lime powder per mu to make the soil slightly alkaline, which can inhibit the reproduction of the southern blight pathogen.
How to Control Tulip Southern Blight and What Chemicals to Use?
Tulips are a flower that many flower enthusiasts love to grow. During the growth process of tulips, how should tulip southern blight be controlled?
Symptoms of tulip southern blight: The entire plant withers, with white fungal strands or rapeseed-like tan-colored small sclerotia winding around the stem base, and the affected area turns brown, rots, and decays. Large amounts of white fungal strands and tan-colored fungal bodies are visible on the soil surface.
Pathogen: Sclerotium rolfsii Sacc., called southern blight, belongs to the Deuteromycotina fungi. The hyphae are white and silk-like, spreading in a fan or radial pattern, later gathering into fungal strands or tangling into sclerotia. The sclerotia resemble rapeseeds, initially white to yellowish-white, later turning tan-brown, round, with a smooth surface. In addition, it has been reported that Corticium rolfsii (Secc.) Cyrzi. is also a pathogen of this disease.
Transmission Routes of Tulip Southern Blight
1. The pathogen overwinters in the soil as sclerotia or fungal strands on diseased plant debris. When conditions are suitable the following year, the sclerotia or fungal strands produce hyphae for primary infection.
2. The silk-like hyphae produced by the plant extend to contact neighboring plants, or the sclerotia spread through water flow for secondary infection, causing the disease to spread and expand. The disease is severe in years or seasons with continuous cropping, heavy clay soil, low-lying terrain, or high temperature and humidity.
Control methods for tulip southern blight: When diseased plants are found, promptly pull them out and burn them. Drench the diseased holes and neighboring plants with a 1000-1600 times dilution of 5% validamycin aqueous solution, or a 500-600 times dilution of 50% tian'an aqueous solution, or a 1000 times dilution of 20% tolclofos-methyl emulsifiable concentrate, or a 500 times dilution of 90% dexon wettable powder, applying 0.4-0.5 liters per plant (hole). When plowing, mix in 100-150 kg of lime powder per mu to make the soil slightly alkaline, which can inhibit the reproduction of the southern blight pathogen.
The above is the relevant knowledge about tulip southern blight.