Resumo
The objective this research was to study the arthropods associated with soybean Glycine max (L.) Merrill crops in Chapecó, Santa Catarina State, Brazil. The samples were collected from 2005/06 and 2006/07 and 2007/08 seasons applied weekly the ground-cloth method in eight points distributed among the crops between V4 and R8 plants stages. The samples were sorting in laboratory and the data were organized by date and taxon. Phytophagous insects totaled 5,278 individuals and natural enemies were 2,203. The stink bugs Nezara viridula (L.) and Piezodorus guildinii (West.) (both Hemiptera: Pentatomidae) are as "key" pests of soybean crops occurring mainly on the reproductive plants phase. Anticarsia gemmatalis Hüebner (Lepidoptera: Noctuidae) and Diabrotica speciosa Germar (Coleoptera: Chrysomelidae) are "secondary" pests more "frequent" infesting the plants during the vegetative and early reproductive stages. Lebia concinna Brullé (Coleoptera: Carabidae) and bugs Geocoris spp. (Hemiptera: Lygaeidae) and predatory ants and spiders are predators "constant" and more "frequent" in crops.
O objetivo desse trabalho foi estudar a artropodofauna associada à cultura da soja, Glycine max (L.) Merrill, no município de Chapecó, SC. As amostragens foram realizadas nas safras 2005/06, 2006/07 e 2007/08, aplicado semanalmente o método do "pano-de-batida" em oito pontos distribuídos pelas lavouras, entre os estádios V4 e R8 das plantas. As amostras foram triadas em laboratório e os dados foram organizados por data e táxon. Houve captura de 5.728 insetos fitófagos e 2.203 inimigos naturais. Os percevejos Nezara viridula (L.) e Piezodorus guildinii (West.) (ambos Hemiptera: Pentatomidae) enquadraram-se como pragas "chave", incidindo principalmente na fase reprodutiva das plantas. Anticarsia gemmatalis Hüebner (Lepidoptera: Noctuidae) e Diabrotica speciosa Germar (Coleoptera: Chrysomelidae) são as pragas "secundárias" mais "frequentes", infestando as plantas na fase vegetativa e no início da fase reprodutiva. Lebia concinna Brullé (Coleoptera: Carabidae), percevejos Geocoris spp. (Hemiptera: Lygaeidae), formigas-predadoras e aranhas são predadores "constantes" e com maior "frequência" nas lavouras.
Resumo
The objective this research was to study the arthropods associated with soybean Glycine max (L.) Merrill crops in Chapecó, Santa Catarina State, Brazil. The samples were collected from 2005/06 and 2006/07 and 2007/08 seasons applied weekly the ground-cloth method in eight points distributed among the crops between V4 and R8 plants stages. The samples were sorting in laboratory and the data were organized by date and taxon. Phytophagous insects totaled 5,278 individuals and natural enemies were 2,203. The stink bugs Nezara viridula (L.) and Piezodorus guildinii (West.) (both Hemiptera: Pentatomidae) are as "key" pests of soybean crops occurring mainly on the reproductive plants phase. Anticarsia gemmatalis Hüebner (Lepidoptera: Noctuidae) and Diabrotica speciosa Germar (Coleoptera: Chrysomelidae) are "secondary" pests more "frequent" infesting the plants during the vegetative and early reproductive stages. Lebia concinna Brullé (Coleoptera: Carabidae) and bugs Geocoris spp. (Hemiptera: Lygaeidae) and predatory ants and spiders are predators "constant" and more "frequent" in crops.
O objetivo desse trabalho foi estudar a artropodofauna associada à cultura da soja, Glycine max (L.) Merrill, no município de Chapecó, SC. As amostragens foram realizadas nas safras 2005/06, 2006/07 e 2007/08, aplicado semanalmente o método do "pano-de-batida" em oito pontos distribuídos pelas lavouras, entre os estádios V4 e R8 das plantas. As amostras foram triadas em laboratório e os dados foram organizados por data e táxon. Houve captura de 5.728 insetos fitófagos e 2.203 inimigos naturais. Os percevejos Nezara viridula (L.) e Piezodorus guildinii (West.) (ambos Hemiptera: Pentatomidae) enquadraram-se como pragas "chave", incidindo principalmente na fase reprodutiva das plantas. Anticarsia gemmatalis Hüebner (Lepidoptera: Noctuidae) e Diabrotica speciosa Germar (Coleoptera: Chrysomelidae) são as pragas "secundárias" mais "frequentes", infestando as plantas na fase vegetativa e no início da fase reprodutiva. Lebia concinna Brullé (Coleoptera: Carabidae), percevejos Geocoris spp. (Hemiptera: Lygaeidae), formigas-predadoras e aranhas são predadores "constantes" e com maior "frequência" nas lavouras.