Artropodofauna do solo em sistemas direto e convencional de cultivo de sorgo (Sorghum bicolor (L.) Moench) na região de Santa Maria, RS

Abstract

Com este trabalho, objetivou-se estudar a artropodofauna do solo em cultivo de sorgo (Sorghum bicolor (L.) Moench) em diferentes estações do ano e profundidade do solo, em sistema direto e convencional. O estudo foi realizado de agosto de 1996 a abril de 1997, em área experimental do Departamento de Defesa Fitossanitária, Universidade Federal de Santa Maria, Rio Grande do Sul, Brasil. Para as coletas dos artrópodes utilizou-se extrator de solo, tomando-se amostras em cinco pontos, nas profundidades de 0-5 cm, 5-10 cm, 10-15 cm e de 15-20 cm, em cada estação do ano. A classe Insecta foi a mais expressiva, correspondendo a 87,68% e 100% do número total de artrópodes, respectivamente na semeadura direta e na semeadura convencional. A ordem Coleoptera foi a mais numerosa, com predomínio das formas larvais das famílias Scarabaeidae, Carabidae e Elateridae, correspondendo a 25,0%, 10,8% e 8,8% do total coletado, respectivamente. A artropodofauna do solo variou através do ano e decresceu com o aumento da profundidade do solo.

Diversity and Spatial Distribution of Predacious Dolichopodidae (Insecta: Diptera) on Organic Vegetable Fields and Adjacent Habitats in Brazil

“…Condylostylus is the only genus of Dolichopodidae commonly cited in studies on insect communities associated with agricultural environments in Brazil (Seffrin et al 2006;Togni et al 2010;Harterreiten-Souza et al 2014). Nevertheless, it was not the most abundant genus found in this study.…”

Monitoring the Neotropical brown stink bug Euschistus heros (F.) (Hemiptera: Pentatomidae) with pheromone‐baited traps in soybean fields

“…The complex of stink bugs around the world has always been difficult to control, and the advent of reduced tillage practices has intensified this problem (Fidelis et al. 2003; Chocorosqui and Panizzi 2004; Seffrin et al. 2006).…”

“…As a consequence, these sucking insects have surfaced as the new primary pests of these transgenic crops. The complex of stink bugs around the world has always been difficult to control, and the advent of reduced tillage practices has intensified this problem (Fidelis et al 2003;Chocorosqui and Panizzi 2004;Seffrin et al 2006). Future pest management strategies should accommodate semiochemical relationships with crop plants and herbivore enemies to take full advantage of stabilizing trophic webs.…”

Chemical Ecology Studies in Soybean Crop in Brazil and Their Application to Pest Management

“…However, Bt toxins are not effective against sucking insects (Hemiptera) (P. Roberts, University of Georgia College of Agricultural and Environmental Sciences, Athens, GA, USA, personal communication; Sharma & Pampapathy, 2006;Torres & Ruberson, 2008) and, as a consequence, have surfaced as the new primary pests in these transgenic crops. The complex of stink bugs around the world has always been difficult to control, and the advent of reduced tillage practices has intensified this problem (Fidelis et al, 2003;Chocorosqui & Panizzi, 2004;Seffrin et al, 2006). The use of sex pheromone baited traps for monitoring stink bugs catches mainly the adult sexually mature females individuals (Borges et al, 1998a) but damage is caused by both adult and immature stink bugs .…”