Cercospora leaf spot is a disease caused by the fungus Cercospora citrullina. It can affect all cucurbit crops (like cucumber and squash) but it is especially common on watermelons. The fungus usually only affects the leaves of the plant, though it can occasionally spread to the petioles and stems.
Why do my watermelon leaves have brown spots?
Alternaria Leaf Blight – Watermelon leaf spots that started as small flecks, but quickly expanded into irregular brown spots as large as ¾ inch (2 cm.) across, could be caused by Alternaria. As the fungus spreads, entire leaves may brown and die.
What does watermelon fungus look like?
Another one of the most common watermelon diseases is gummy stem blight. A symptom of this fungal infection includes brownish-black, wrinkled spots on leaves. There will also be cankers, or lesions, on the vine stem, which will secrete a brown gummy substance. Gummy stem blight thrives in wet, humid conditions.
How do you treat watermelon leaf blight?
Fungicides that contain azoxystrobin, boscalid, chlorothalonil, copper hydroxide or potassium bicarbonate have shown to be very effective in controlling watermelon alternaria leaf spot when used regularly and in combination with proper sanitary practices.
What do Overwatered watermelons look like?
If rainfall is heavy, watermelons may swell too quickly for the plant to keep up with the extra water content. When this happens, the rind of the watermelon may split or burst as a result of the excess water building up inside of it. Once this has happened, the watermelon is ruined.
What is the best fungicide for watermelon?
The best fungicides are Flint Extra, Cabrio, mancozeb, or chlorothalonil.
How often should I water my watermelon?
Typically, watermelon plants need 1-2 inches of water per week so that the soil stays moist but not wet. If you’re not getting enough rain each week, make sure you give your plants an extra drink.
What’s wrong with my watermelon leaves?
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.
What do you spray watermelon with?
Melons are always attacked by fungal diseases, such as powdery and downy mildews. Therefore, preventive sprays should be employed often, using fungicides such as copper or mancozeb. Spraying can be done once a week during the dry season and at least twice during the wet season.
How do you know when to stop watering watermelon?
Stick your finger deep into the soil, down to about your second knuckle, if the soil feels moist, then refrain from watering until later. On the other hand, if the soil is dry at this level, it’s time to water. To avoid overwatering your watermelons be sure to check the weekly weather forecast.
How do you add calcium to watermelon plants?
A recommended preventive measure is a solution of 2 tablespoons of calcium chloride in 1 gallon of water sprayed on the foliage and fruit of watermelons at least twice during the growing season at one-week intervals beginning when the flowers start blooming. Premixed solutions are also sold.
Why does my Watermelon Peperomia have brown spots?
The most common causes of brown spots on Peperomia plants are too much light, underwatering, overwatering, using the wrong kind of water, pests, diseases, temperature changes, humidity problems and fertilizer problems.
How do you save a dying watermelon plant?
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.
Should I water my watermelon plant every day?
Watering 1–2 times each week works best for healthy watermelon plants. Aim to keep the soil evenly moist at all times—not too dry and not too wet. Give your young watermelon vines 2 inches (5 cm) of water every week. Decrease water to 1 inch (2.5 cm) weekly once fruit sets on the vines.
How often should you fertilize watermelon plants?
Just before or as soon as the vines begin to run, a second application of nitrogen is advisable. This is usually 30 to 60 days from planting. Use a 33-0-0 fertilizer at the rate of ½ pound (227 g.) per every 50 feet (15 m.)
Can watermelon get too much sun?
Watermelons require full sun for proper growth. For full sun, choose a location where watermelons receive eight to 10 hours of direct sunlight. The plants need sun to remain healthy and productive. Choose a garden location where trees, buildings or other structures do not block the sun and shade the plants.
Can you use neem oil on watermelon?
Neem oil is not only a natural pesticide, it’s also an antifungal spray. So, spraying your watermelon plants with neem oil every two weeks helps to keep insects away. Plus, you’ll also prevent fungus from causing plant disease.
How do you take care of watermelon plants?
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. Dry weather produces the sweetest melon.
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.
Can you use Epsom salt on watermelons?
For sweeter watermelons and cantaloupes when the plant starts vining and again when small 1-inch melons appear, spray with 6 1/2 tablespoons Epsom salts and 3 1/2 tablespoons borax in 5 gallons of water.
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.