The cause and prevention of daffodil mosaic disease
2018-04-27 16:00:41
Daffodil mosaic disease is a disease caused by viruses and occurs in all daffodil producing areas around the world.
Symptoms: Asymptomatic at the onset of the disease, or a slight irregular chlorotic spot on the upper part of the leaf. As the disease progresses, the lesion shows a distinct mosaic and expands to a larger plaque. When the disease is severe, the leaves are distorted and yellow, the plants are short and deformed, and the bulbs become smaller, causing the bulbs to degenerate.
Pathogen: The pathogen is Narcissus Mosaic Virus (NMV).
Onset: The virus is spread by leafhoppers, soil nematodes, and aphids. Juice and contact can also be transmitted. Poisonous submunitions are an important factor that cannot be ignored. The virus has a wide range of hosts and can infect amaranth, petunia, periwinkle, hyacinth, pea, and other flowers.
Prevention: 1 strict quarantine, to eliminate the source of poison. 2 For species purification and rejuvenation. 3 intensive cultivation, strengthen management. 4 hot water, drug disinfection. The bulbs (seeds) were first soaked in a constant temperature water at 45°C for 1.5 hours and then sterilized in a 1% formalin solution for 1 hour. When sowing, carbofuran was sprinkled into the sowing ditch at a dosage of 5g/m2.
Symptoms: Asymptomatic at the onset of the disease, or a slight irregular chlorotic spot on the upper part of the leaf. As the disease progresses, the lesion shows a distinct mosaic and expands to a larger plaque. When the disease is severe, the leaves are distorted and yellow, the plants are short and deformed, and the bulbs become smaller, causing the bulbs to degenerate.
Pathogen: The pathogen is Narcissus Mosaic Virus (NMV).
Onset: The virus is spread by leafhoppers, soil nematodes, and aphids. Juice and contact can also be transmitted. Poisonous submunitions are an important factor that cannot be ignored. The virus has a wide range of hosts and can infect amaranth, petunia, periwinkle, hyacinth, pea, and other flowers.
Prevention: 1 strict quarantine, to eliminate the source of poison. 2 For species purification and rejuvenation. 3 intensive cultivation, strengthen management. 4 hot water, drug disinfection. The bulbs (seeds) were first soaked in a constant temperature water at 45°C for 1.5 hours and then sterilized in a 1% formalin solution for 1 hour. When sowing, carbofuran was sprinkled into the sowing ditch at a dosage of 5g/m2.