Prevention and Control of Bowl Lotus Rot

The bowl lotus is now planted in the bowl of lotus flowers, specially placed on the indoor tea table, used to beautify the home environment, because the bowl lotus flowers diameter of only five centimeters, petite and exquisite appearance is very popular. However, bowl lotus is also prone to rot, so how to prevent the rot of bowl lotus?

Bowl lotus

Symptoms: the disease occurs in the whole plant, starts from the seed root, and extends to underground stems, petioles, leaves and pedicels. The underground stem seems asymptomatic at the initial stage, but some of its cross-sectional ducts become light brown or brown, and gradually expand. Some diseased stems do not change color significantly, but longitudinal wrinkles occur on the whole or one side of the stem, and the leaves from the diseased stems are light green, which begin to dry up from the leaf edge, causing the leaves to curl and even die.

Second, the route of transmission and disease conditions: the mycelium overwintered in the lotus root and chlamydospore in the soil, and the bacteria-carrying lotus root and diseased soil became the main source of primary infection. When planting lotus root with bacteria, the seedlings became the central diseased plant, first the underground stem and root had pathological changes, then affected the petiole and leaf, and the central diseased plant produced spores to invade from the wound and form re-infection. There were differences in resistance among varieties, the disease of deep root varieties was lighter than that of shallow root varieties, and it was easy to be induced by continuous rain, lack of sunshine or frequent storms, and it was easy to be induced by poor or acidic soil permeability in lotus root field, sewage or water temperature higher than 35 ℃.

Third, control methods: ① selects disease-resistant varieties according to local conditions. ② seriously ill fields should be rotated for 2-3 years. ③ selected disease-free lotus root, and used 50% carbendazim or methyl thiophanate wettable powder 800x solution plus 75% chlorothalonil wettable powder 800x liquid, sowed after spraying, covered with plastic film and sealed for 24 hours, dried and planted. ④ lotus root fields are ploughed and raked, and lime 1500~2250kg is applied per hectare. ⑤ should strengthen the management of fertilizer and water, apply enough rotten organic fertilizer, and topdressing timely and appropriately, so as to combine organic fertilizer with chemical fertilizer, nitrogen fertilizer with phosphorus and potassium fertilizer; according to the different growth stages of lotus root, it is necessary to manage the water layer, make the depth suitable, adjust the temperature and fertilizer with water, and prevent the disease from being aggravated by high water temperature or long-term deep irrigation. ⑥ sprays 50% carbendazim wettable powder 600x liquid plus 75% chlorothalonil wettable powder 600x liquid after timely removal of diseased plants; you can also use the above-mentioned mixed fungicides per hectare 7.5kg mixed with fine soil 375~450kg, pile up for 3h, sprinkle into the shallow water layer, and then spray the above-mentioned mixture 600x solution or 40% polysulfide suspension 400x solution or 50% Shu Ke wettable powder 1000 times solution on the aboveground petiole 2 days later.

The symptoms of bowl lotus rot and the prevention and control methods of bowl lotus rot

There are differences in resistance among varieties of lotus rot. deep root varieties are lighter than shallow root varieties, and the disease can be easily induced by continuous rain, lack of sunshine or frequent storms. Lotus field soil permeability is poor or acidic, sewage into the field or water temperature is higher than 35 ℃, it is easy to induce this disease. Today, we will introduce the symptoms of lotus rot and the prevention and control methods.

Symptoms of bowl lotus rot:

The symptom disease of lotus rot occurs in the whole plant, starting from the seed root, extending to the underground stem, petiole, leaf and pedicel and so on. The underground stem seems asymptomatic at the initial stage, but some of its cross-sectional ducts become light brown or brown, and gradually expand. Some diseased stems do not change color significantly, but longitudinal wrinkles occur on the whole or one side of the stem, and the leaves from the diseased stems are light green, which begin to dry up from the leaf edge, causing the leaves to curl and even die.

Prevention and control of lotus rot:

① selected disease-resistant varieties according to local conditions.

② seriously ill fields should be rotated for 2-3 years.

③ selected disease-free lotus root, and used 50% carbendazim or methyl thiophanate wettable powder 800x solution plus 75% chlorothalonil wettable powder 800x liquid, sowed after spraying, covered with plastic film and sealed for 24 hours, dried and planted.

④ lotus root fields are ploughed and raked, and lime 1500~2250kg is applied per hectare.

⑤ should strengthen the management of fertilizer and water, apply enough rotten organic fertilizer, and topdressing timely and appropriately, so as to combine organic fertilizer with chemical fertilizer, nitrogen fertilizer with phosphorus and potassium fertilizer; according to the different growth stages of lotus root, it is necessary to manage the water layer, make the depth suitable, adjust the temperature and fertilizer with water, and prevent the disease from being aggravated by high water temperature or long-term deep irrigation.

⑥ sprays 50% carbendazim wettable powder 600x liquid plus 75% chlorothalonil wettable powder 600x liquid after timely removal of diseased plants; you can also use the above-mentioned mixed fungicides per hectare 7.5kg mixed with fine soil 375~450kg, pile up for 3h, sprinkle into the shallow water layer, and then spray the above-mentioned mixture 600x solution or 40% polysulfide suspension 400x solution or 50% Shu Ke wettable powder 1000 times solution on the aboveground petiole 2 days later.

The symptoms of bowl lotus rot and the prevention and control methods of bowl lotus rot are introduced here. I believe everyone will understand it after reading it.

How to control the rot of lotus bowls

Bowl lotus, also known as hibiscus, likes plenty of sunshine and is not tolerant to shade. Rot is a common disease in the growth process of bowl lotus. Today, the editor shares with you the symptoms and control methods of bowl lotus rot.

Symptoms of bowl lotus rot:

The disease occurs in the whole plant, starts from the seed root, and extends to underground stems, petioles, leaves and pedicels. The underground stem seems asymptomatic at the initial stage, but some of its cross-sectional ducts become light brown or brown, and gradually expand. Some diseased stems did not change color significantly, but longitudinal wrinkles occurred on the whole or one side of the stem, and the leaves of the diseased stems were light green, and then began to dry up from the leaf edge, causing the leaves to curl and even die.

The transmission route and incidence conditions of lotus rot:

The mycelium overwintered in the lotus root and chlamydospore in the soil, and the bacteria-carrying lotus root and diseased soil were the main sources of primary infection. When planting lotus root with bacteria, the seedlings became the central diseased plant, first the underground stem and root had pathological changes, then affected the petiole and leaf, and the central diseased plant produced spores to invade from the wound and form re-infection. There were differences in resistance among varieties, the disease of deep root varieties was lighter than that of shallow root varieties, and it was easy to be induced by continuous rain, lack of sunshine or frequent storms, and it was easy to be induced by poor or acidic soil permeability in lotus root field, sewage or water temperature higher than 35 ℃.

Prevention and control methods of bowl lotus rot:

① selected disease-resistant varieties according to local conditions.

② seriously ill fields should be rotated for 2-3 years.

③ selected disease-free lotus root, and used 50% carbendazim or methyl thiophanate wettable powder 800x solution plus 75% chlorothalonil wettable powder 800x liquid, sowed after spraying, covered with plastic film and sealed for 24 hours, dried and planted.

④ ploughed the lotus root field deeply and applied lime 1500-2250kg per hectare.

⑤ should strengthen the management of fertilizer and water, apply enough rotten organic fertilizer, and topdressing timely and appropriately, so as to combine organic fertilizer with chemical fertilizer, nitrogen fertilizer with phosphorus and potassium fertilizer; according to the different growth stages of lotus root, it is necessary to manage the water layer, make the depth suitable, adjust the temperature and fertilizer with water, and prevent the disease from being aggravated by high water temperature or long-term deep irrigation.

⑥ sprays 50% carbendazim wettable powder 600x liquid plus 75% chlorothalonil wettable powder 600x liquid after timely removal of diseased plants; you can also use the above-mentioned mixed fungicide 7.5kg to mix fine soil 375-450kg per hectare, pile up for 3-4h, sprinkle it into shallow water layer, and then spray it on the aboveground petiole 2-3 days later with the above-mentioned mixture 600x solution or 40% sulfide suspension 400x solution or 50% Shu Ke wettable powder 1000 times solution.

The above is about the symptoms and control methods of bowl lotus rot.