Avaliação populacional de lagartas e inimigos naturais em azevém, com rede de varredura

  title={Avaliaç{\~a}o populacional de lagartas e inimigos naturais em azev{\'e}m, com rede de varredura},
  author={Alexandre Specht and Elio Corseuil},
  journal={Pesquisa Agropecuaria Brasileira},
Noctuids are the main phytophagous pests of gramineae and decisions about its control are based on percentage of defoliation, not considering the level of larval infestation. The objective of this study was to test the sweeping net in the evaluation Noctuidae population and of the principal groups of natural enemies in ryegrass (Lolium multiflorum Lam.), in the morning and at night. The work was conducted in two crops in Salvador do Sul, RS, Brazil. In the first experiment, insects were sampled… Expand
Diversidade dos noctuídeos (Lepidoptera, Noctuidae) em Salvador do Sul, Rio Grande do Sul, Brasil
The Noctuidae community in Salvador do Sul, Rio Grande do Sul is described, where the more constant species were noctuids of great economic importance; the accessories were related to specific vegetable groups; the accidentals have their host unknown. Expand
PEST MANAGEMENT Caracterização dos Danos de Spodoptera eridania (Cramer) e Spodoptera cosmioides (Walker) (Lepidoptera: Noctuidae) a Estruturas de Algodoeiro
The results validate observations that these two species of Spodoptera are potential pests for cotton and quantify the potential damage of S. cosmioides and S. eridania. Expand
Reproductive biology and longevity of Euplectrus ronnai (Brèthes) (Hymenoptera: Eulophidae)
The larval ectoparasitoid Euplectrus ronnai (Brethes) is one of the components of a species complex that attacks the armyworm Mythimna (Pseudaletia) sequax Franclemont (Lepidoptera: Noctuidae). NoExpand
Tolerância à germinação na espiga em cultivares de trigo colhido na maturação fisiológica
Frontana was the most promising cultivar to be used in breeding programs and the use of visual grades as criteria of sprouting in the ears permitted a prompt and accurate evaluation of great number of cultivars without affecting the results of tolerant genotypes selection. Expand
Owlet moths (Lepidoptera: Noctuoidea) associated with Bt and non- Bt soybean in the brazilian savanna.
This study compared the richness and abundance of owlet moths (Noctuoidea) associated with Bt and non-Bt soybean, and determined the temporal variations as a function of phenology, and correlated the population variations of the most common species with meteorological variables. Expand
Owlet moths ( Lepidoptera : Noctuoidea ) associated with Bt and non-Bt soybean in the brazilian savanna
The use of GMO expressing Bt toxin in soybean production has increased significantly in the last years in Brazil in order to manage the damage caused by lepidopteran pests. In this study, we comparedExpand
Incidence of Mythimna sequax parasitized in wheat crop
This study reported for the first time four Tachinidae species parasitizing W. sequax, and further studies are needed to promote the conservation of these parasitoids in agroecossystem and development biological control programs for management of the wheat armyworm. Expand
[Characterization of the damage of Spodoptera eridania (Cramer) and Spodoptera cosmioides (Walker) (Lepidoptera: Noctuidae) to structures of cotton plants].
The results validate field observations that these two species of Spodoptera are potential pests for cotton and are considered species with potential to cause economic damage to cotton plants. Expand
Edge effects on carabid beetles (Coleoptera: Carabidae) between forest fragments and agricultural fields in south‐east Brazil
Carabid communities showed high similarity between edge – crop and edge – fragments, and species of Scarites showed the most potential as biocontrol agents of soybean/corn pests. Expand
Carabid beetles (Coleoptera: Carabidae) and biological control of agricultural pests in Latin America
Abstract The well-diversified Latin American agriculture plays an essential role in the economy of that region, through the export of food and agricultural commodities. The region is expected toExpand


Biologia e potencial de doru luteipes no controle de spodoptera frugiperda
It was concluded that D. luteipes under laboratory conditions gave an efficient control of S. frugiperda (eggs and larvae) and can be used under field conditions as for controlling this important pest of corn. Expand
This is a discussion of the South American grasslands from the standpoint of their evolution and composition. The tribes are considered in relation to climate, and grasses are classified as mega-,Expand
Biologia de Doru luteipes (Scudder) e sua capacidade predatoria de ovos de Helicoverpa zea (Boddie)
O objetivo deste trabalho foi estudar a biologia e o potencial de Doru luteipes (Scudder) em laboratorio, cOmo predador de ovos de Helicoverpa zea (Boddie). Ninfas de um dia de idade e adultos foramExpand
Insect Communities, Grasses, and Grasslands
This review characterizes special features of grasses and grasslands and presents analyses of their insect communities that focus on annual and perennial grasses, small and long grass species, biotypes of diff erent habitat types, grasses grown from wild and commercial seeds, ectophages and endophages, and below- and aboveground herbivory. Expand
The predators of insects
Abstract. 1. Insect–insectivore trophic relations were reviewed using presence–absence data from sixty‐one invertebrate‐dominated food webs and fifteen food webs from Briand's (1983) original fortyExpand
Diel activity patterns of some field Carabidae
A 24 h time‐sorting pitfall trap was used to collect Carabidae in a field in north‐east England in 1974, 1976 and 1977 to study the behaviour of these birds of prey. Expand