It is concluded from the present study that whitefly was the major pest of brassica in Tandojam, Sindh followed by thrips
, aphid and painted bug.
The effect of chemical treatment on four major insect pests of cowpea--cowpea aphid, Aphis craccivora Koch, legume flower bud thrips
, Megalurothrips sjostedti Trybom, legume pod borer, Maruca vitrata Fab and pod sucking bugs such as Anoplocnemis curvipes, Clavigralla spp.
To monitor thrips
populations and determine the efficacy of the insecticides, we sampled 32 fruits (8 per orientation) per tree 1 d prior to the spray, 2 d later, and then weekly until the end of the study.
cucumeris are predatory mites that help control various thrips
The new Swansea research targeting Western Flower Thrips
has a major benefit in that the gene-based intervention does not involve chemicals and leaves other more beneficial insects, such as bees, unharmed.
The small-scale study demonstrated that in 5-hour fumigations with 1,000 ppm (parts per million) phosphine at 5 [degrees]C, control of western flower thrips
on lettuce increased from 80 percent to 98 percent when oxygen was increased from 21 percent to 40 percent.
According to the researchers the newly discovered thrips
lived during the lower Cretaceous Period when flowering plants would have just started to diversify, eventually replacing conifers as the dominant species.
puncture and feed on the rind of citrus, leaving scars that get larger as the fruit grow (Grafton-Cardwell et al.
Species of sucking insects such as aphids, scale, leafhoppers, whitefly and thrips
and several species of phytophagous mites are not able to extract amino acids from proteins for their own use.
Azera is formulated to prevent and manage even the most pervasive and toughest-to-kill insects including aphids, thrips
, whiteflies, leaf miners, caterpillars, stink bugs and many others.
CONTROL PESTS Smother infestations of aphids, mites, thrips
, and whiteflies by spraying with horticultural oil.
Other insects collected were thrips
, lepidopterans and ants.
The key insect pests that decimate cowpea are the cowpea aphid, Aphis craccivora Koch, which attacks the seedlings, flowers and pods, flower bud thrips
, Megalurothrips sjostedti, Tryb.
AIn summer large quantities of thrips
or thunderflies swarm on to field crops and are blown in the air.
Pippa says: I suspect that these are tiny thrips
, commonly known as thunder flies, because they often appear in vast numbers during muggy and thundery weather.