16 documents found, page 1 of 2
Ambrosia beetles as bioindicators of “neem decline” in Brazil
Penteado, Susete do Rocio Chiarello; Carpanezzi, Aparecido Antonio; Neves, Edinelson José Maciel; Santos, Álvaro Figueredo dosThis is the first record of the beetles attack (Curculionidae, Scolitinae) in neem plantations located in Brejinho de Nazaré, Tocantins, Brazil. The insects were observed on plants between 7 and 10 years old and were identified as Xylosandrus compactus (Eichhoff), Cryptocarenus diadematus Eggers, 1937 and Hypothenemus sp. Westwood, 1836. The attacked plants showed a growth rate considered low for the region, ha...
Fusarium spp. and Phytophthora palmivora isolates associated with basal stem ro...
Alves, Sandro Alex Rosa; Santos, Álvaro Figueredo dos; Tessmann, Dauri José; Vida, João BatistaThe objective of this research was to evaluate the pathogenicity of P. palmivora and Fusarium spp. isolates associated with basal stem rotting of peach palm. Four P. palmivora isolates and 15 Fusarium spp. isolates were inoculated in wounded stems using mycelial plugs as inoculum. Disease intensity was based on symptoms showed by leaf flags and full- xpanded leaves, which ranged from yellowing to necrosis. It w...
Chemical Control of Anthracnose on Peach Palm Transplants in Orchard
Mafacioli, Rudimar; Tessmann, Dauri José; Santos, Álvaro Figueredo dos; Vida, João BatistaLeaf anthracnose, caused by Colletotrichum loeosporioides, is the most important disease of peach palm plants (Bactris gasipaes var. gasipaes) in nurseries in the Central and Southern Brazil. The objective of this study was to evaluate efficacy of some new formulations of fungicides for controlling anthracnose transplants in orchards. An assay with randomized block design was carried out, with five different fu...
Pupunha Palm Heart Production from Different Plant Density
Neves, Edinelson José Maciel; Santos, Álvaro Figueredo dos; Lavoranti, Osmir José; Martins, Emerson GonçalvesThe coast region of Paraná State, Brazil, has a great potential for growing of pupunha trees aiming palm heart production due to climate conditions. There were around one million pupunha trees planted at small farmers area, totalizing about 200 ha, in this region by the end of 2004. This fact confirms the specie as a sustainable and economicaly viable alternative for small farmers as long as the natural stands ...
Evaluation of Fungicides for Controlling Anthracnose on Leaves of Peach Palm (B...
Tessmann, Dauri José; Santos, Álvaro Figueredo dos; Vida, João Batista; Mafacioli, RudimarLeaf anthracnose, caused by Colletotrichum loeosporioides, is the most important disease of seedlings and young peach palm plants (Bactris gasipaes). The objective of this study was to evaluate efficacy of some fungicides for controlling anthracnose on leaves of young peach palm (Bactris gasipaes), in Northwestern Paraná State, Brazil. An assay with randomized block design was carried out, with five different f...
Fungi Association with Cedar’s Seeds and Fusarium sp. and Pestalotia sp. Pathog...
Benetti, Sílvia Cristina; Santos, Álvaro Figueredo dos; Medeiros, Antonio Carlos de Souza; Jaccoud Filho, David de SouzaThis research had as main objectives the evaluation of cedar’s seeds seed-borne fungi and the Fusariumsp. and Pestalotia sp. pathogenicities. For the fungi detection Potato Dextrose and Agar medium and Blottertest methods were used. For the pathogenicity tests, isolates of Fusarium sp. and Pestalotia sp. were used. The following fungi were observed: Pestalotia sp., Fusarium sp., Phomopsis sp., Colletotrichum sp...
Fungi Associated with Capororoca (Myrsine ferruginea) Myrsinaceae Fruits and Seeds
Rego, Suelen Santos; Santos, Álvaro Figueredo dos; Medeiros, Antonio Carlos de SouzaThe objectives of this study were to identify the fungi associated with capororoca (Myrsine ferruginea Spreng) fruits and seeds from different lots and check the incidence of fungi between green and ripe fruits andseeds from these fruits. For fungi detection Blotter test (BT) method was utilized, being 400 fruits and 400 seeds each sample, and incubated at 20 ºC ±1 ºC, 12 h dark light/12 h complete dark, for se...
Rooting of basal offshoots of peach palm (Bactris gasipaes) Abstract
Tracz, Anderson Luiz Augusto; Wendling, Ivar; Kalil Filho, Antonio Nascim; Santos, Álvaro Figueredo dos; Quoirin, Marguerite Germanine GhislaineThis paper aims to aprimorate the technic of offshots rooting and preparing of offshoots and verify the effect of progenies and substrates on the rooting of peach palm (Bactris gasipaes Kunth. var. gasipaes Henderson) offshots. Average of survival varying from 26.6 % to 60 %, of rooting from 3.3 % to 10 %. The progenies survivalaverage varied from 16.6 % to 26.6 % and rooting from 10 % to 16.6 %. Technic for ex...
Production of three cuttings of Bactris gasipaes for heart-of-palm under differ...
Neves, Edinelson José Maciel; Santos, Álvaro Figueredo dosThe present study was developed to characterize the chemical properties of the soil under peach palm (Bactris gasipaes) plantations at 24, 39 and 48 months old, and to quantify the heart-of-palm production on a local industrial scale (packaged in various forms in glass jars). The experiment was set up in two areas, located along the Alexandra-Matinhos Road (km 7 and km 10) near Paranaguá county, State of Paran...
Methodology for sporulation and production of monoconidial isolates of Sphaerop...
Basilio, Paula Rachel Rabelo Corrêa; Auer, Celso Garcia; Santos, Álvaro Figueredo dos; Higa, Antonio RioyeiSphaeropsis sapinea is one of main pathogens that causes losses in commercial plantations of Pinusspp. Studies for control based on genetic resistance can be done by inoculating different monosporic isolates onpine populations and selectioning the resistant individuals. This work describes a methodology for pycnidia production in vitro and S. sapinea monoconidial cultures, using an agar-water medium with steril...