6 documents found, page 1 of 1
Validation of an automatic evaluation of sticky traps for fungus-gnats
Schuhli, Guilherme Schnell e; da Cruz, Pedro Cazetta; Franciscon, Luziane; Oliveira, Edilson Batista deThe evaluation of adhesive trap is a time-consuming task, vulnerable to count errors. Our proposition originated from the need to perform periodical evaluations of fungus-gnats (Diptera: Sciaridae). We selected, at random, 100 traps samples from a single site. Manual counting was performed and the traps were subsequently submitted to digitalization and automatic counting. We perform comparisons of both counting...
Sample size for monitoring sirex populations and their natural enemies
Penteado, Susete do Rocio Chiarello; Oliveira, Edilson Batista de; Iede, Edson TadeuThe woodwasp Sirex noctilio Fabricius (Hymenoptera: Siricidae) was introduced in Brazil in 1988 and became the main pest in pine plantations. It has spread to about 1.000.000 ha, at different population levels, in the states of Rio Grande do Sul, Santa Catarina, Paraná, São Paulo and Minas Gerais. Control is done mainly by using a nematode, Deladenus siricidicola Bedding (Nematoda: Neothylenchidae). The evaluat...
Um sistema computadorizado de prognose do crescimento e produção de Pinus taeda...
Oliveira, Edilson Batista deO presente trabalho teve os seguintes objetivos gerais: (1) desenvolver um sistema computadorizado que integre métodos de engenharia econômica a um simulador de crescimento e produção de povoamentos de Pinus taeda L., implantados na Região Sul do Brasil, e (2) avaliar sua aplicação nas atividades de manejo e planejamento da produção destas florestas. O sistema desenvolvido foi constituído por três softwares: (a...
Damages caused by cattle on different tree species in silvopastoral systems
Porfírio-da-Silva, Vanderley; Moraes, Anibal de; Moletta, José Luis; Pontes, Laíse da Silveira; Oliveira, Edilson Batista de; Pelissari, AdelinoWe assessed the damage done by cattle in three species of trees in a silvopastoral system implanted in the subtropical region of Brazil. The species Schinus terebinthifolius (Raddi), Grevillea robusta (A. Cunn. Ex R. Br) and Eucalyptus dunnii (Maiden), were planted in single rows (14 m x 3 m) to compose a silvopastoral system. During the first three years, the area was used for grain production in alley croppin...
Initial Growth of Mimosa scabrella Benth., Schinus terebinthifolius Raddi e All...
Knapik, Juliane Garcia; Almeida, Lausanne Soraya de; Ferreria, Marcio Pinheiro; Oliveira, Edilson Batista de; Nogueira, Antonio CarlosIn order to study the influence of mineral nutrition on quality and the growth of seedlings of Schinus terebinthifolius Raddi, Mimosa scabrella Benth. and Allophylus edulis (ST. Hil.) Radl, a experiment was conducted in the nursery facilities of Embrapa Florestas, Colombo – PR. The three species were sown in plastic containers of 50 cm3 in February 2004. The substrate was a mixture of a commercial formula (pine...
Production, Carbon and Economical Profitability of Pinus elliottii and Eucalypt...
Oliveira, Edilson Batista de; Ribaski, Jorge; Zanetti, Éderson Augusto; Penteado Junior, Joel FerreiraThis work objective was to estimate wood production, CO2 stocks and economical profitability, including carbon credits sale from pasture associated eucalyptus and pine plantations. For each species, two experimental plots were used, all installed at natural pasture land in Alegrete, Rio Grande do Sul State. Experimental plots were submitted to three treatments: two of them with silvipasture systems at triple...