Pictorial images are icons as well as eye-cons: they provide distillations of objects or ideas into simpler shapes. They create the impression of representing that which cannot be presented. Even at the level of the photograph, the links between icon and object are tenuous. The dimensions of depth and motion are missing from icons, and these alone introduce all manner of potential ambiguities. ...

The fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a polyphagous, invasive insect pest which causes significant losses in important crops wherever it has spread. use of pesticides agriculture key tool the management many crop pests, including S. frugiperda, but continued insecticides selected for various types resistance, enzyme systems that provide enhanced mech...

Excessive pesticide residues on Chinese cabbage will be harmful to people’s health. Therefore, an identification system was designed for qualitative analysis of lambda-cyhalothrin leaves. In order extract discriminant information from mid-infrared (MIR) spectra effectively, fuzzy uncorrelated vector (FUDV) proposed by introducing the set theory into (UDV) analysis. this system, Cary 630 FTIR sp...

Abstract Presented study focused on the incidence of pesticides: malathion, chlorpyrifos and ?-cyhalothrin heavy metal, arsenic in rice samples collected from three main growing areas. 30 brown Super Kernel Basmati varieties, irrigated through tube well irrigation were selected. Highly sensitive selective method High Performance Liquid Chromatography was used for determination pesticides. Resul...

Objective: We evaluated the susceptibility status of Anopheles gambiae in two communities Ikorodu, Lagos, Nigeria to DDT, deltamethrin, lambda cyhalothrin and bendiocarb.
 Methods: immature stages were collected from their habitats surveyed community allowed emerge before exposure adult females discriminating doses WHO insecticides including cyhalothrin, bendiocarb malathion. PBO synergist...

ABSTRACT: We evaluated under field conditions the toxicity of insecticides previously identified as harmful in laboratory and semifield bioassays on parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae). The experiments were conducted during 2019/20 2020/21 harvests rice fields. Following recommendations International Organization for Biological Integrated Control (IOBC), four appl...

© Copyright Faculdade de Saúde Pública da USP. Proibida a reprodução mesmo que parcial sem a devida autorização do Editor Científico. Proibida a utilização de matérias para fins comerciais. All rights reserved. VOORHAM, Jaco, The use of wide-mesh gauze impregnated with lambda-cyhalothrin covering wall openings in huts as a vector control method in Suriname. Rev. Saúde Pública, 31 (1) : 9-14, 19...

As agricultural expansion and intensification increase to meet the growing global food demand, so too will insecticide use and thus the risk of non-target effects. Insecticide pollution poses a particular threat to aquatic macroarthropods, which play important functional roles in freshwater ecosystems. Thus, understanding the relative toxicities of insecticides to non-target functional groups i...