20 documents found, page 1 of 2

Feasible sampling plan for adults of Aleurocanthus woglumi Ashby (Hemiptera: Al...

Toxicity of the essential oil of basil cultivars and hybrids and its repellent ...

Essential oils have emerged as an alternative to synthetic insecticides in the control of stored grain pests. The toxicity and repellency of the essential oils of four basil cultivars and three basil hybrids and the monoterpenes linalool, citral, and (E)-methyl cinnamate were evaluated in the stored grain pests Callosobruchus maculatus and Sitophillus zeamais. The essential oils of the cultivar Genovese and the...

Morpho-agronomic characterization of Varronia curassavica germplasm conservated...

Varronia curassavica Jacq. is a medicinal and aromatic plant native to Brazil. The essential oil of this species is valued by the pharmaceutical industry due to its bioactive substances containing anti-inflammatory properties. This study aimed to morpho-agronomically characterize 27 accessions of the collection of V. curassavica of the Active Germplasm Bank of Medicinal and Aromatic Plants of the Federal Univer...

Seletividade de oito inseticidas a predadores de lagartas em citros

O objetivo deste trabalho foi avaliar a seletividade dos inseticidas abamectina, acefato, carbaril, deltametrina, fenitrotiom, fenpropatrina, paratiom metílico e triclorfom aos predadores Brachygastra lecheguana (Latreille), Protonectarina sylveirae (Saussure) e Protopolybia exigua (Saussure) (Hymenoptera: Vespidae) em concentrações que corresponderam a 50% e 100% da dose recomendada para o controle de lagartas...

Seletividade fisiológica de inseticidas aos inimigos naturais de Plutella xylos...

A conservação de inimigos naturais é um componente fundamental no manejo integrado de pragas. Neste trabalho, estudou-se a seletividade de sete inseticidas usados no manejo de Plutella xylostella (L.) (Lepidoptera: Plutellidae) ao parasitóide Oomyzus sokolowskii (Kurdjumov) (Hymenoptera: Eulophidae) e aos predadores Discodon sp. (Coleoptera: Cantharidae) e Lasiochilus sp. (Hemiptera: Anthocoridae). Os organofos...

Natural mortality factors of tomato leafminer Tuta absoluta in open-field tomat...

Little importance has been given to the role of natural mortality factors (biotic and abiotic) in the regulation of tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) populations. The present study determined the action of mortality factors on T. absoluta populations infesting cultivated tomato crops. Eighty ecological life tables for T. absoluta in field cultivated tomato plants were constructed and ana...

Seasonal variation in natural mortality factors of Tuta absoluta (Lepidoptera: ...

The seasonal variation in natural mortality of phytophagous insects is determined by the relative importance of biotic and abiotic factors in agroecosystems. Knowledge regarding these factors throughout the year represents a key concern for IPM programmes. Seasonal population fluctuations of tomato pinworm, Tuta absoluta, led to an investigation of its natural mortality factors during the rainy season when the ...

Seletividade fisiológica de inseticidas a Vespidae predadores de Ascia monuste ...

Este trabalho objetivou estudar a seletividade dos inseticidas carbaril, deltametrina, paratiom metílico, permetrina e triclorfom em relação a Ascia monuste orseis (Godart) (Lepidoptera: Pieridae) e a seus predadores Brachygastra lecheguana Latreille e Protonectarina sylveirae (Saussure) (Hymenoptera: Vespidae). Por meio de curvas de concentração-mortalidade e das concentrações letais para 90% da população (CL9...

Critical yield components and key loss factors of tropical cucumber crops

The critical components and the key factors of yield losses in autumn–winter and spring–summer cucumber crops were determined and quantified in Viçosa county, State of Minas Gerais, Brazil, in areas cultivated with gynoecium hybrids of the groups Aodai (Sprint 440 II) and “Caipira” (Vlasstar). The data were used to build crop life tables. The overall losses in the autumn–winter and spring–summer cultivations we...

Acaricidal properties of vetiver essential oil from Chrysopogon zizanioides (Po...

Ticks are arthropods widely distributed in tropical and subtropical regions, which can transmit infectious agents also responsible for zoonoses. Excessive use of conventional acaricides has resulted in the onset of drug resistance by these parasites, thus the need to use alternative methods for their control. This study evaluated the acaricidal activities of Chrysopogon zizanioides (vetiver) essential oils cont...