What Are The Common Diseases Of Watermelon?

Watermelon Diseases

• Disease Management Strategies.
• Anthracnose (Colletotrichum obiculare)
• Bacterial fruit blotch (Acidovorax citrulli)
• Cercospora leaf spot (Cercospora citrullina)
• Downy mildew (Pseudoperonospora cubensis)
• Fusarium wilt (Fusarium oxysporum f.
• Gummy stem blight (Stagonosporopsis cucurbitacearum)

How do you control the watermelon virus?

Regularly monitor the fields for signs of the diseases, as well as the presence of aphids. Crop rotation with non-host plants may help in avoiding the virus. Remove waste from previous cultures. Control insecticide use in order not to affect beneficial insects.

Which fungicide is best for watermelon?

The best fungicides are Flint Extra, Cabrio, mancozeb, or chlorothalonil.

What Bacteria grows on watermelon?

Contaminated melons have been linked to cases of food poisoning caused by Salmonella bacteria. Melons can become contaminated in the field by: soil.

What does an infected watermelon look like?

Water-soaked, “oily” areas on the underside of the cotyledons or seedling leaves often paralleling the veins with a yellow halo are characteristic symptoms. The infected areas dry up and become elongated, angled, black, necrotic patches.

What is killing my watermelon plants?

The most common reasons for watermelon plants dying include incorrect soil, watering issues, not enough sunlight, or planting issues. Temperature, weeds, diseases, and pests can also play a role.

Why do watermelon leaves turn yellow?

Yellowing Leaves in Watermelon
Nitrogen Deficiency – Both young and old leaves can show signs of nitrogen deficiency and may appear any shade of lighter green to yellow. This is common during both dry spells and when plants simply aren’t being fed enough.

When is the best time to spray fungicide?

While it is better to have protectant fungicide applications on before a rain or heavy dew event which could represent an infection period, avoid putting on protectant fungicides within several hours before a rainstorm as you may lose much of it to wash-off.

How do you increase watermelon fruit size?

To maximize the size of the melon, water the plants regularly in deep water sessions that keep the soil moist. Side dress the Watermelon plants with fertilizer prepared for edible crops or fertilizer tea to feed the plants. Fertilizer encourages growth to produce large melons.

What causes black spots on watermelon leaves?

Anthracnose – This seed-borne fungus is hard to detect initially, as it may only appear as small spots on your plants and fruits. As it grows, these spots expand and turn black or gray and new sunken areas may appear on your fruit.

What causes deformed watermelon?

The deformed shape could indicate that part of the melon is getting enough water and trying to develop normally and part of it is not. Water regularly so the melons do not undergo dry spells. Mulching can also help to conserve moisture.

Can watermelon have E coli?

We observed a low prevalence of natural E. coli on the surfaces of the watermelon fruits (S1 Appendix). Out of 25 watermelons, 10 were positive for E. coli with five upper half and six lower half positive samples.

Why are my watermelon leaves turning yellow with brown spots?

The fungus usually only affects the leaves of the plant, though it can occasionally spread to the petioles and stems. Symptoms of cercospora on watermelon leaves begin as small, dark brown spots near the crown of the plant. If left untreated, the spots will spread to other leaves and develop a yellow halo.

What are the symptoms of plant disease?

A symptom of plant disease is a visible effect of disease on the plant. Symptoms may include a detectable change in color, shape or function of the plant as it responds to the pathogen. Leaf wilting is a typical symptom of verticilium wilt, caused by the fungal plant pathogens Verticillium albo-atrum and V. dahliae.

Can watermelon have viruses?

Watermelon mosaic virus is best known for causing disease in most cucurbits and some legumes, though experimentally it has been shown to have a broader host range than almost all other potyviruses. This host range includes more than 170 different plant species from 27 different families.

How do you keep a watermelon healthy?

While melon plants are growing, blooming, and setting fruit, they need 1 to 2 inches of water per week. Keep soil moist, but not waterlogged. Water at the vine’s base in the morning, and try to avoid wetting the leaves and avoid overhead watering. Reduce watering once fruit are growing.

How do you save a dying watermelon?

If the soil and the plant’s roots are allowed to dry out, the vines and leaves will wilt, then shrivel up and die. Add a thick layer of mulch around the plants to conserve water and slow evaporation from the soil.

What to spray on watermelons for bugs?

Insecticides Insecticides used in watermelon are: abamectin, esfenvalerate, diazinon, dimethoate, carbofuran, dicofol, methomyl, permethrin, carbaryl, endosulfan, imidacloprid, bifenthrin, beta-cyfluthrin, thiamethoxam, spiromesifin, fenpropathrin, dinotefuran, spintor, vydate, and fulfill.

Can you water watermelons too much?

Can You Over Water Watermelon Plants? Yes, watermelon can be overwatered. Generally, watermelons need about 1 to 2 inches of water per week to start growing, blooming and producing fruits. However, the amount of water that a watermelon plant needs is reduced once the watermelon sets the fruit.

How often do you have to water watermelon?

Watering Watermelons
They require plentiful regular, even watering for quick growing. Give watermelons 1 to 2 inches (2.5. -5cm) of water every week (1 inch equals 16 gallons/60.5 liters.) Keep the soil moist until the fruit reaches full size then stop watering while the fruit ripens.

How many watermelons do you get per plant?

2-4 fruits
How Many Watermelons per Plant? Healthy watermelon vines produce 2-4 fruits per plant. The vines produce both male and female flowers. Both are needed to set fruit and there are fewer female flowers compared to male, about one female for every seven males.