Lettuce Plant Pests

However there are also bad companion plants which you should never plant near lettuce. In lettuce visually monitor 40-60 seedlings and 20 hearted lettuce for insect pests and beneficials.

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Spread monitoring over at least 5-10 locations within a planting and include crop boundaries.

Lettuce plant pests. Using a bug-vac on 100 seedlings can be substituted for visual monitoring. On the attacked plants can be observed bleaching spots that give the plant a mosaic look. In severe cases appear colorless spots in the spaces between the nerves and even burns.

Lettuce root aphids These pests can cause older plants to suddenly wilt and die back usually in mid- to late sunmmer. Most of the spots can be observed on the spaces between the nerves. Lettuce mosaic virus.

Growers must rely on control by other chemicals already being used in the crop. Pests and diseases affecting lettuce Lettuces are relatively pest and disease free. Several slug and snail species are common garden pests.

Slugs are dark gray to black in color and can range in size from 25 to 10 cm 1-4 in. Fungal infection can be a problem in very humid weather and should be treated by thinning out the plants to improve air circulation around the remaining lettuces. Field crickets Gryllus spp like darkling beetles enter the garden from adjacent fields.

You may not see the aphids as they feed on the roots not the leaves but you may see lots of ants around the plants as they feed on the honeydew that the aphids produce. The good news is you can control slugs organically. How to get rid of garden pests a garden slug on lettuce Slugs and snails are most gardeners enemy number one.

The symptoms appear at temperatures above 20 degrees Celsius. For instance good companion plants can serve as ground cover improve soil conditions attract pollinators provide shade and can keep away pests. Slime trails present on rocks walkways soil and plant foliage.

Flowers and fruit may also be damaged if present. The tender leaves of seedlings and fresh new growth on established garden plants are magnets for molluscs which make holes in leaves and leave tell-tale trails of slime. Caterpillars are a large family of insects and possibly the most destructive to lettuce crops.

Garden snails are generally smaller and possess a. There are so many including cutworms armyworms earworms and loopers. As you can see good companion plants can really make a positive difference for your lettuce growth project.

Treat these lettuce diseases by spacing the plants apart to provide airflow and by reducing the amount of irrigation the seedlings receive. If infestation is severe leaves may be shredded. These bugs fly into the garden as moths and lay clusters of eggs on the leaves of plants.

Lettuce SARP 2014 Page 3 There are no or limited chemicals permitted for a number of the lesser pests of lettuce. Irregularly shaped holes in leaves and stems. They are not common pests of lettuce but if present they may destroy your lettuce crop by eating the.

Fungal lettuce diseases such as damping off or sclerotinia drop white mold are caused by soil borne fungi that thrive in cool damp soil and are primarily lettuce seedling diseases.

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