are insects that suck the cell sap, killing the plant slowly.
Reduction of thrip
was recorded in Neem extract (52.28%) followed by Neem oil (46.81%), Asafoetida (45.02%) and tobacco (43.40%) on cotton crop.
and aphid are major insect pests that damage the leaves and flowers by sucking the cell sap and reduce quality and quantity of plant .
Result showed varietal differences for adult populations of dusky bugs, jassid, white flies and thrips
were significant (P<0.5) but non-significant differences for mites.
In Brazil, information about thrips
and natural enemies associated with this plant is still scarce (BARBO SA et al., 2005).
schultzei were recorded on each leaf of the vine to verify the choice of the thrips
in relation to the position of the leaf, and in relation to the phenological stage of the plants.
In Ceara, there are also a few records of thrips
species, mainly associated with zucchini squash (Curcubita pepo L.), onion (Allium cepa L.) and tomato (Solanum lycopersicum L.) (Lima et al., 2011).
A significant negative correlation was observed between thrips
damage scores and total carbon concentration (r=-0.54) indicating that total carbon plays a significant role against thrips
damage in cowpea.
For example, a nonlinear regression model can write the increase of the number of thrips
found in a plant, after the seedlings emergence, related to time.
KEY TO THE IDENTIFICATION OF GENERA OF THRIPS
(INSECTA: THYSANOPTERA) COMMONLY ASSOCIATED WITH ORNAMENTAL PLANTS IN CENTRAL AMERICA