4 documents found, page 1 of 1
Expert system for identification of economically important insect pests in comm...
Zanuncio, José Cola; Nascimento, Diego A.; Anunciação Jr., Ronivaldo M.; Arnhold, Alexandre; Ferraz Filho, Antonio C.; Santos, Alexandre dosHomogeneous teak plantations in Brazil occupy large areas with genetically close plants, which may favor insect pests. The insect pests can reduce the quantity and quality of wood produced. The identification of insects at early stages is important to prevent its spread. The objective of this study was to develop an expert system to identify, with mobile smartphones as inference engine, economically important i...
OCORRÊNCIA DOS ÁCAROS Mononychellus sp. E Oligonychus sp. EM MOGNO AFRICANO (Kh...
Nascimento, Diego Arcanjo do; Silva, Willian Lucas Paiva da; Santos, Alexandre dos; Santos, Juliana Cristina dos; Arnhold, AlexandreO mogno africano é nativo da África e foi introduzido no Brasil nos anos 70 como substituto do mogno nativo. Foi observado que plantas de dois anos de idade apresentavam sinais de ataque nas folhas em um plantio em Rio Manso, no estado de Minas Gerais, Brasil. Foram encontradas duas espécies de ácaros, Mononychellus sp. e Oligonychus sp., ambos da família Tetranychidae. As lesões observadas foram de ondulação d...
Forest cultures and leaf cutting ants in Viçosa, State Minas Gerais, Brazil
Arnhold, Alexandre; Magistrali, Iris Cristiane; Anjos, Norivaldo dosThis study aimed to enlarge the records of forest species attacked by leaf cutting ants in Viçosa, in the state of Minas Gerais. The rising was accomplished in the Campus of the Universidade Federal de Viçosa, being considered only nest active that were cutting and carrying fragments of forest essences. For the study it was evaluated temperature measures and distances of the nest to the attacked tree. As result...
Occurrence of Costalimaita lurida (Coleoptera: Chrysomelidae) in Eucalyptus spp...
Arnhold, Alexandre; Gonçalves, DinarteChrysomelids are important pests in forest plantations because they cause injuries and affect tree growth. Among the chrysomelid, Eumolpinae subfamily presents the greatest number of species recorded as pest. The purpose of this study was to register the occurrence and evaluate the attack of Costalimaita lurida (Lefévre, 1891) in a plantation of Eucalyptus spp. in the northern of Minas Gerais state. The attack ...