Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), is a worldwide pest of onion, Allium cepa L. In field studies on onion resistance conducted in 2007 and 2008 using 49 cultivars, 11 showed low leaf damage by T. tabaci. In laboratory studies, the 11 cultivars, along with two susceptible checks and four additional cultivars, were evaluated to characterize resistance to T. tabaci and...

Frankliniella spp. (Thysanoptera: Thripidae) thrips damage a variety of crops, feed on a broad range of hosts, and often migrate into cropping systems from adjacent vegetation. To determine potential sources of Frankliniella spp. thrips on crops, annual cycles of abundance of Frankliniella occidentalis (Pergande), Frankliniella fusca (Hinds), Frankliniella bispinosa (Morgan), and Frankliniella ...

A field experiment was undertaken in a vineyard southern Romania to evaluate the insect species abundance this temperate climate area, over period of 24 consecutive weeks, starting from April 2nd September 27th, 2019. total number 19 303 insects were collected. After their morphological analysis, 89 identified (nine orders and 28 families), which 52 came beneficial fauna (six 14 families, 1 316...

Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), a worldwide pest of onion, Allium cepa L., can reduce onion yield by > 50% and be even more problematic when it transmits Iris yellow spot virus (family Bunyaviridae, genus Tospovirus, IYSV). Because T. tabaci is difficult to control with insecticides and other strategies, field studies on onion, Allium cepa L., resistance to T. ta...

Tomato spotted wilt tospovirus (TSWV) is a major economic threat to tobacco production in Georgia. Several thrips species are reported as vectors of TSWV, and three of these species are observed on Georgia tobacco, Frankliniella fusca (Hinds), F. occidentalis (Pergande), and F. bispinosa (Morgan). This study evaluated several thrips control practices for efficacy and suppressing the incidence o...

An action threshold (AT) is one of the most important decision-making elements in integrated pest management. Unlike economic thresholds, ATs are not typically derived from an economic injury level model, but they are more commonly used. ATs may be identified from research-based, pest-crop relationships, but they also may be based on experience. ATs may be adjusted depending on, e.g., weather a...

Control of Frankliniella occidentalis (Pergande) is a serious problem for agriculture all over the world because of the limited range of insecticides that are available. Insecticide resistance in F. occidentalis has been reported for all major insecticide groups. Our previous studies showed that cytochrome P450-mediated detoxification is a major mechanism responsible for insecticide resistance ...

M.W. Siebert, Dow AgroSciences LLC, 129 Bayou Rd, Greenville, MS 38701; S. Nolting and J.E. Dripps, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268; L.C. Walton, Dow AgroSciences LLC, 693 Walton Road SW, Tupelo, MS 38804; D.R. Cook and J. Gore, Delta Research and Extension Center, Mississippi State University, Box 197, Stoneville, MS 38776; S. Stewart, University of Tennessee,...

Ultralow oxygen (ULO) treatments with different oxygen levels, treatment times, and temperatures were studied to determine effects on western ower thrips mortality and postharvest quality of iceberg lettuce. Thrips mortality increased with reduced oxygen level and increased treatment ime and temperature. At 0.003% oxygen, over 99.6% mortality rates of thrips were achieved in three ULO treatment...