How to control the white silk disease of tulips

White silk disease of tulip is a common disease that does great damage to tulips and often causes plant death. In breeding, attention should be paid to prevention and control.

Symptoms: the whole plant withered, the stem base wrapped around white fungus or rapeseed tea brown sclerotia, the affected part became brown and rotten. A large number of white fungi and tea-brown fungi can be seen on the soil surface.

Pathogen: sclerotiumrolfsiisacc. It is called neat micronucleus disease, which belongs to the subphylum of semiknowns. The hyphae were white silk-like, fan-like or radial expansion, and then gathered into fungal cords or entangled sclerotia. Sclerotia is like rapeseed, the initial white to yellow-white, and then become tea-brown, round, smooth surface.

Route of infection: 1. The pathogen overwintered with sclerotia or fungal cords in the soil with the remains of the disease. when the conditions were suitable in the following year, the mycelium produced by Sclerotinia sclerotiorum was initially infected.

two。 The silky filamentous hyphae produced by the plants extended to contact the neighboring plants or the sclerotia were re-infected by water transmission, resulting in the spread of the disease, continuous cropping or clay weight of the soil and low-lying or high-temperature and humid years or seasons.

Prevention and control methods: diseased plants were removed and burned in time, and 5% Jinggangmycin water was irrigated with 5% Jinggangmycin water agent 1000 × 1600 times, or 50% tianan water agent 500 × 600 times, or 20% methyl richos emulsion 1000 times, or 90% dimethophos wettable powder 1000 times, each plant (hole) was fully irrigated with 0.4% 0.5 liter of wine. Combined with ploughing, 100,150kg lime powder per mu can slightly alkalize the soil and inhibit the breeding of white silk pathogen.

Root lice feed on bulbs in the soil and drill into the epidermis to suck sap, causing plant growth weakness or easy to rot or induce diseases. Soak the worm-carrying bulb in thin lime water for 10 minutes, take it out and rinse thoroughly to kill the root lice.

Symptoms: the whole plant withered, the stem base wrapped around white fungus or rapeseed tea brown sclerotia, the affected part became brown and rotten. A large number of white fungi and tea-brown fungi can be seen on the soil surface.

Pathogen: SclerotiumrolfsiiSacc. It is called neat micronucleus disease, which belongs to the subphylum of semiknowns. The hyphae were white silk-like, fan-like or radial expansion, and then gathered into fungal cords or entangled sclerotia. Sclerotia is like rapeseed, the initial white to yellow-white, and then become tea-brown, round, smooth surface. In addition, it is reported that Corticiumrolfsii (Secc.) Cyrzi. It is also the pathogen of the disease.

Transmission route of white silk disease of tulip

1. The pathogen overwintered with sclerotia or fungal cords in the soil with the remains of the disease. when the conditions were suitable in the following year, the mycelium produced by Sclerotinia sclerotiorum was initially infected.

two。 The silky filamentous hyphae produced by the plants extended to contact the neighboring plants or the sclerotia were re-infected by water transmission, resulting in the spread of the disease, continuous cropping or clay weight of the soil and low-lying or high-temperature and humid years or seasons.

Prevention and control of white silk disease of tulip:

When diseased plants were found, the diseased plants were removed and burned in time, and the river water of the diseased point and its adjacent plants were irrigated with 5% Jinggangmycin water 1000 × 1600 times, or 50% Tianan water 500 × 600 times, or 20% methyl richos emulsion 1000 times, or 90% dimethophos wettable powder 1000 times, each plant (hole) was sprinkled with 0.4% 0.5 liter of water. Combined with ploughing, 100,150kg lime powder per mu can slightly alkalize the soil and inhibit the breeding of Xanthomonas campestris.

Symptoms and Control of White Silk Disease of Tulip

Tulip (details) although the cultivation is not very difficult, but if you do not pay attention to conservation, it is still prone to disease. White silk disease is one of the more common diseases of tulips, which will lead to the withering of the whole tulip plant. The editor will introduce the symptoms, etiology, prevention and treatment of this disease for you in detail.

Tulips (details)

First, symptoms: the whole plant withered, the stem base wrapped around white fungus or rapeseed tea brown small sclerotia, the affected part became brown and rotten. A large number of white fungi and tea-brown fungi can be seen on the soil surface.

2. Etiology:

A. the pathogen overwintered in the soil with sclerotia or fungal cords. When the conditions were suitable in the following year, the mycelium produced by Sclerotinia sclerotiorum was initially infected.

B, the filamentous hyphae produced by the strain extended to contact the neighboring plants or the sclerotia were re-infected by water transmission, resulting in the spread of the disease, continuous cropping or clay weight of the soil and low-lying or high-temperature and humid years or seasons.

Third, prevention and control methods: when diseased plants are found, they are removed and burned in time, and the diseased points and their adjacent plants are irrigated with 5% Jinggangmycin water 1000 × 1600 times, or 50% Tianan water 500 × 600 times, or 20% methyl risperidophos emulsion 1000 times, or 1000 times of 90% dimethophos wettable powder, each plant (hole) is sprinkled with 0.4 × 0.5 liter. Combined with ploughing, 100,150kg lime powder per mu can slightly alkalize the soil and inhibit the breeding of Xanthomonas campestris.