What are the symptoms of yellow vein mosaic?
Yellow vein mosaic disease is found in okra plants or ladyfinger. The symptoms include alternate green and yellow patches, vein clearing and vein chlorosis of leaves. The yellow network of veins is very conspicuous and vein and veinlets are thickened.
What causes yellow vein mosaic?
This disease is caused by a complex consisting of the monopartite begomovirus Bhendi yellow vein mosaic virus (BYVMV, family: Geminiviridae) and a small satellite DNA beta component. BYVMV can systemically infect bhendi upon agroinoculation but produces only mild leaf curling in this host.
What are the symptoms of mosaic?
Mosaic symptoms are variable but commonly include irregular leaf mottling (light and dark green or yellow patches or streaks). Leaves are commonly stunted, curled, or puckered; veins may be lighter than normal or banded with dark green or yellow.
Which virus causes yellow vein mosaic of okra?
Yellow vein mosaic disease (YVMD), okra leaf curl disease (OLCD), and okra enation leaf curl disease (OELCD) are caused by viruses of genus Begomovirus (family Geminiviridae) resulting in the serious losses in okra cultivation (Venkataravanappa et al., 2013b).
How do you control yellow vein mosaic virus?
Spraying monocrotophos 1.5 ml/litre of water can restrict the disease spread. Synthetic pyrethroids should not be used because it will aggravate the situation. It can be controlled by application of Chlorpyriphos 2.5 ml + neem oil 2 ml lit of water.
How can we control yellow mosaic virus?
Seeds are to be treated with insecticides like carbosulfon at 30gm or monocrotophos at 5ml per one kg seed before sowing. Follow crop rotation and maintain soil health management. Grow suitable region wise resistant varieties. Use seeds collected from disease-free plants.
What is yellow vein mosaic of lady finger?
Bhendi yellow vein mosaic virus (BYVMV) or okra yellow vein mosaic (OYVMV) is a viral disease caused by monopartite Begomovirus affecting okra plants. It was first found in 1924 in Bombay, India, and Sri Lanka. It is the major limitation of the production of okra. This disease is transmitted by whitefly.
Can mosaic virus be cured?
Once plants are infected, there is no cure for mosaic viruses. Because of this, prevention is key! However, if plants in your garden do show symptoms of having mosaic viruses, here’s how to minimize the damage: Remove all infected plants and destroy them.
Is mosaic virus harmful to humans?
Is the mosaic virus harmful to humans or pets? The mosaic virus is not harmful to humans or pets since the virus is specific to plants.
What diseases affect okra?
Okra.
Who has discovered yellow vein mosaic virus for the first time?
3 Bhendi yellow vein mosaic virus. BYVMV was first reported by Kulkarni (1924) from Mumbai, India.
What disease does Lady Finger cause?
Yellow vein mosaic of bhindi or vein clearing of bhindi is the most devastating disease in all the bhindi growing regions of India. Up to 80% of crop loss is expected if the crop is infected at early stages.
What causes vein banding?
It is a symptom seen in plants infected with certain viral diseases. Here, dark or light bands appear along the main veins. This might look similar to the yellow mosaic disease.
How fast does mosaic virus spread?
Cucumber mosaic virus is spread from plant-to-plant by many species of aphids. Aphids only retain the ability to transmit these viruses for very short periods of time (minutes to a few hours). Thus, spread is often very rapid and local.
How do you control okra disease?
Diseases
- Rotate crop to non-host to reduce build-up of inoculum in the soil; avoid water stress to plants by irrigating when required.
- Use on certified, disease-free seed; plant varieties with higher resistance to the disease in areas with a history of Fusarium diseases; fumigating the soil may reduce disease incidence.
Is a viral infection seen in okra?
Okra mosaic virus was first seen in okra plants in Africa, but there are now reports of it popping up in U.S. plants. This virus is still not common, but it is devastating to crops. If you grow okra, you are not likely to see it, which is good news since control methods are limited.
How do you treat mosaic virus?
Which is the most serious disease of okra?
Yellow Vein Mosaic Virus (YVMV):
This is the most important and destructive viral disease in bhendi. The disease infects at all the stages of crop growth and severely reduces growth and yield. The disease is transmitted by white fly.
Does Lady Finger contain potassium?
Introduction: Ladyfinger, popularly known as bhindi in India, is rich in nutrients. It is considered a good source of carbohydrates, proteins, vitamins, enzymes, calcium, potassium and many other nutrients.
What does a varices band look like?
The enlarged veins are called varices. The doctor placed elastic rings around the veins. The rings look like rubber bands.
How long do variceal bands last?
After the application of rubber bands over esophageal varices, the ligated tissues with rubber bands may fall off within a few days (range: 1-10 d).
Is mosaic virus treatable?
What causes yellow spots on okra leaves?
Cercospora Leaf Spot of Okra
Cercospora is a fungal infection wherein spores are carried by the wind from infected plants to other plants. These spores adhere to the leaf surface and grow, becoming mycelia growth. This growth is present on the undersides of the leaves in the form of yellowing and brown spots.
What are the major problem observed in okra production?
The major problems identified by the okra farmers were difficulty getting funds, bad access roads to farms, difficulty in controlling weeds and pests and diseases.
Is mosaic virus common?
As can be inferred from its name, cucumber mosaic virus often affects cucumbers, but it is also a common problem for many other garden plants, including other cucurbits (melons, squashes), nightshades (tomatoes, peppers, eggplants, potatoes), and leafy greens (lettuce, spinach).