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Onion thrips Thrips tabaci • Young (nymphs) and adults very small 0.5-1.2 mm. The body is thin, and slender. Their eyes are darker and are easy to see. • Often like to crawl into regions between leaves. Photos: Whitney Cranshaw, Colorado State University, Bugwood.org; A. N. Sparks Jr University of Georgia, Bugwood.org INSECT 40
30 Μαρ 2023 · At less than two millimeters in length, thrips are a tiny insect that can cause a big impact. They’re pale yellow to brown, winged, sucking insects that overwinter in fields. Thrips injury in cabbage is identified by blistered, scarred, and bronze heads in cabbage, according to PennState Extension.
14 Απρ 2023 · When cabbage is nearby, thrips can infest it. Injury. Cabbage are blistered, scarred, and bronzed by thrips feeding on leaves; with thrips present, heads are unmarketable. Thrips feed on leaves by puncturing and rasping the outer leaf tissue and sucking the sap as it exudes from the cells.
19 Αυγ 2015 · Damage from thrips was negligible at harvest and none of the observed damage was significant enough to render the cabbage heads unmarketable. Thrips tabaci showed a varietal preference for Lennox over Bronco throughout this study.
The onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae) has been recognized as a severe worldwide pest of white cabbage (Brassica oleracea L. convar. capitata provar. capitata Duch.)...
1 Μαρ 2005 · Mean index of damage on the exterior leaves of cabbage heads caused by Thrips tabaci feeding. Five varieties grown at a plant density of 30 × 40 cm (2001) were evaluated using a six-degree...
Thrips crop damage is easily noticeable, though the precise symptoms differ between thrips species and host plant types. Depending on the species, the damage leads to leaf wilting, brown and white spots, or a silvery or scaly appearance.
