Thrips are tiny, slender insects with fringed wings. Thrips species feed on a large variety of sources both plant and animal by puncturing them and sucking up the contents. A large number of thrips species are considered pests, because they feed on plants with commercial value. Thrips like tight spaces for hiding and feeding and, with regards to onions, are usually found in the neck or folded leaves.
Symptoms[edit | edit source]
A heavy infestation of thrips will cause sufficient damage to the leaves to reduce photosynthetic ability and, as a result, reduce any fruit yield. Silvery-white streaks are noticeable on the petals. Fruit damage varies depending on the crop.
Cucumber[edit | edit source]
An infestation results in distortion and curling of the fruit, white linear markings are visible.
Pepper[edit | edit source]
Silver or brown streak spots are visible on the fruit. Feeding on sweet pepper causes silvery or bronze streaks or spots on the fruit. The sepals may also curl due to thrips feeding and expose the fruit to infections.
Tomato[edit | edit source]
Ghost spoting may be visible if feeding has occured on the fruit. This may also occur on cucumber and pepper fruit.
Galleries[edit | edit source]
Thrips[edit | edit source]
Plant damage[edit | edit source]
References[edit | edit source]
|This page uses Creative Commons Licensed content from Wikipedia (view authors).|
|Bilberry · Blueberry · Cranberry|
|Adverse conditions||Iron deficiency|
|Diseases||Hemlock needle rust · Sudden oak death|
|Pests||Blueberry maggot · Cranberry fruitworm · Leaf-footed bug · Thrips · Vine weevil · Winter moth|
|Chilli · Sweet pepper|
|Adverse conditions||Calcium deficiency · Sun scald|
|Diseases||Alfalfa mosaic virus · Anthracnose fruit rot of pepper · Bacterial spot of tomato and pepper · Cucumber mosaic virus · Frogeye leaf spot · Grey mould · Pepper mild mottle virus · Phoma blight · Phytophthora blight · Sclerotinia rot · Southern blight · Tobacco etch virus · Tomato spotted wilt virus|
|Pests||Aphid · Leaf miner · Pepper weevil · Red spider mite · Root-knot nematode · Thrips (Chilli thrips, Western flower thrips)|
|Adverse conditions||Blossom drop · Blossom end rot · Catfacing · Dry set · Fasciation · Frost · Greenback · Hollow fruit · Leaf roll · Leggy plants · Magnesium deficiency · Nitrogen deficiency · Oedema · Phosphorus deficiency · Potassium deficiency · Split fruit · Sun scald · Tomato stem primordia|
|Pests||Aphid · Cabbage whitefly · Flea beetle · Greenhouse whitefly · Leaf miner (Tomato leafminer, Vegetable leafminer) · Potato cyst nematode · Potato psyllid · Root-knot nematode · Slug · Thrips (Eastern flower thrips)|
- ↑ Sparks, A.N.Jr. (2003). "Onion Thrips". "Forestry Images". Image Number: 1327083. Retrieved 2010-07-17.
- ↑ a b c Murphy, G. Ferguson, G. Shipp, L. (2009) "Biology Of Thrips In Greenhouse Crops". Minitry of Agriculture, Food & Rural Affairs, Ontario. Retrieved 2010-07-17.