Caterpillars.
Key to Lettuce Pests. Caterpillars attacking the fall crop are usually the most troublesome field pests of lettuce. In the greenhouse, aphid and cabbage looper infestations often give problems. Cutworms, whiteflies, leafminers, and slugs are slightly less important greenhouse pests.
What are common diseases in lettuce?
Lettuces Diseases
- Downy Mildew. Downy mildew is a fungus that can affect up to 80 percent of acreage once established.
- Leaf Spot. This disease comes from weeds and typically affects less than five percent of acreage.
- Lettuce Mosaic Virus.
- Tomato Spotted Wilt Virus.
- Bottom Rot.
- Drop.
- Bacterial Diseases.
- Chemical.
What is the most common plant pest?
Here are 10 of the most common plant pests, and how you can keep them in check.
- Aphids. Aphids live only about a week, but a mature female can reproduce rapidly.
- Leaf miners. Leaf miners are the larvae of various pests, including moths, flies, and beetles.
- Scale.
- Whiteflies.
- Earwigs.
- Cutworms.
- Fungus gnats.
- Mealybugs.
Is lettuce prone to pests?
Lettuce leaves are easy for pests to reach at ground level, and the folds of leafy types provide a multitude of effective hiding places. It’s important to keep a close eye on your lettuce in the garden, because some insects can do a huge amount of damage in a very short period of time.
What is lettuce bug?
Entamoeba histolytica (aka lettuce bug) is an intestinal parasite, and if I remember correctly, the first mobile organism we ever visualized under the microscope in high school or college biology. For many decades, most cases seen in the U.S. occur in recent immigrants and travelers returning from endemic areas.
What causes spots on lettuce?
Bacterial leaf spot can occur on both leaf and head lettuce varieties. As with most bacterial diseases, the pathogen, Xanthomonas campestris pv. vitians, is highly dependent on wet, cool conditions for infection and disease development. Symptoms develop only if rain or sprinkler irrigation is present.
What are the 4 types of pests?
There are four different types of pests – rodents, insects, birds and wildlife. Below we discuss a little more about each, what the signs of infestation are and how you can prevent them. Rats and mice are one of the more unpleasant infestations.
What are the five 5 common insects that causes damages to plants?
Top 10 insect pests to plants
- Cotton bollworm (Helicoverpa armigera)
- Tobacco whitefly (Bemisia tabaci)
- Two-spotted spider mite (Tetranychus urticae)
- Diamondback moth (Plutella xylostella)
- Taro caterpillar (Spodoptera litura)
- Red flour beetle (Tribolium castaneum)
- Green peach aphid (Myzus persicae)
What are some common plant pests and diseases?
Here are some of the plant diseases and pests we commonly see and how you can prevent and treat them.
- Sooty Mold.
- Fusarium Wilt.
- Fire Blight.
- Aphids.
- Thrips.
- Oleander Leaf Scorch.
What do lettuce aphids look like?
Lettuce aphid has several color forms, ranging from green to orange to pink. Adult winged and wingless lettuce aphids have black markings on the joints of the legs and antennae. Some of the wingless aphids have many black markings on the top of the abdomen as well.
What are the green bugs on my lettuce?
Lettuce aphids come in multiple hues ranging from green to orange to pink. The adults have black markings on their leg joints and antennae. Some have black markings on the abdomen as well and may be winged or wingless.
How do I control aphids on my lettuce?
Conclusion
- Manually Remove Aphids.
- Spray Leaves or the Lettuce Plant that has Aphids.
- Use Insecticidal Soap.
- Use Commercial Pesticide.
- Apply an Organic Pesticide.
- Use Essential Oils.
- Dust Your Lettuce Plant & its leaves.
- Cut Back Your Lettuce Plant.
Why does lettuce have E. coli?
Romaine lettuce and spinach are grown in the soil, which can be exposed to animal feces or contaminated water. The produce is at risk of contamination from irrigation water especially if it’s grown near animal production facilities where the animals may be infected with E. coli.
Does all lettuce have bugs?
Any variety of lettuce is fairly easy to grow; however, most varieties are susceptible to insect pests that attack the lettuce and either kill it off completely or do irreparable damage. Keep reading to learn more about these pests and when lettuce insecticide may be necessary for control.
Is bugs on lettuce normal?
These little insects suck sap from your salad and are totally harmless, should the occasional hitchhiker slip your attention. To remove them, there are a few home remedies: Soak the leaves in salted water (a tablespoon for a large bowl should do).
What kind of bugs eat lettuce?
Key to Lettuce Pests. Caterpillars attacking the fall crop are usually the most troublesome field pests of lettuce. In the greenhouse, aphid and cabbage looper infestations often give problems. Cutworms, whiteflies, leafminers, and slugs are slightly less important greenhouse pests.
What is best fertilizer for lettuce?
Feed lettuce plants every two weeks with a balanced water soluble or granular fertilizer, such as a 10-10-10 or a 5-5-5, diluted to half strength. Look for a fertilizer in which the three numbers separated by hyphens are equal or almost equal.
What plants keep bugs away from lettuce?
Chives and garlic, in particular, are good neighbors because they naturally repel aphids, a common problem for lettuce. Similarly, marigolds, one of the big powerhouses of pest repellers, can be planted near lettuce to help keep the bugs away.
What bacteria is in lettuce?
Leafy greens and other vegetable row crops are a major source of E. coli O157 infections. Other harmful germs found on leafy greens include norovirus, Salmonella, Listeria, and Cyclospora.
What does blight look like on lettuce?
Lesions enlarge, turn brown, dry out and may fall out giving the leaves a tattered appearance. Numerous fruiting bodies (pycnidia) develop with leaf spots. Symptoms of bacterial leaf spot start as small brown spots with chlorotic haloes occurring on the lower leaves first.
How do you treat bacterial leaf spots on lettuce?
Remove old vegetable debris in the garden and do not plant new crops where host plants were once growing. There are no recognized chemical treatments for bacterial leaf spot disease.