Diversidade de fungos associados a Parlatoria ziziphus (Lucas)(Hemiptera: Diaspididae) em Citros

Parasitismo em Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae) em Pomares de Citros em Montenegro, RS

Phyllocnistis citrella Stainton, the citrus-leafminer, is an important pest of citrus worldwide. Knowledge of natural parasitism levels is fundamental to the establishment of tactics of management and control of this species. This work aimed to evaluate the parasitism in two citrus orchards, one of ‘Montenegrina’ (Citrus deliciosa Ten.) and the other of ‘Murcott’ (C. sinensis (L.) Osbeck x C. r...

Interação entre fungos micorrízicos arbusculares e bactérias diazotróficas em trigo

The aim of this work was to evaluate the inoculation effect of two new endophytic diazotrophic bacteria and the interaction between arbuscular mycorrhizal fungi (AMF) and these bacteria on wheat plants. The experiment was carried out in a greenhouse with the two strains of diazotrophic bacteria, IAC11HT (Achromobacter insolitus) and IAC12HT (Zoogloea ramigera), and two AMF (Glomus sp. and Acaul...

Um método para determinação de pontos de operação com diversidade em linha digital de assinante usando balanceamento de espectro e algoritmo evolucionário

This work presents a method for finding diversity set operating points, which are Pareto optimal and diverse, to digital subscriber lines (DSL). Several works presented in the literature have proposed algorithms for optimizing data transmission in DSL lines, which results in a unique operating point for the modems. These works use spectrum balancing algorithms to solve the power allocation prob...

Heteroptera as Vectors of Plant Pathogens

RESUMO A habilidade de insetos picadores-sugadores em transmitir doenças para as plantas está intimamente relacionada ao modo de alimentação e ao tecido alvo. Os percevejos são considerados de importância econômica mínima como vetores de patógenos de plantas, embora tenham comportamento alimentar semelhante aos homópteros. Os modos de alimentação em Heteroptera incluem “dilaceração e bombeament...

Feeding behavior of pharoscymnus ovoideus sicard (COL.: coccinellidae) a predator of date palm scale parlatoria blanchardi targ (hom.: diaspididae)