11 documents found, page 1 of 2
Controle da podridão gomosa em melão rendilhado em cultivo protegido por saniti...
Vida, João Batista; Tessmann, Dauri J.; Zambolim, Laércio; Verzignassi, Jaqueline R.; Brandão Filho, José Usan T.A podridão gomosa (Didymella bryoniae) é a principal doença para o meloeiro rendilhado (Cucumis melo) cultivado em estufas no Norte do Estado do Paraná e a poda das brotações laterais das plantas tem sido eficiente meio de disseminação do patógeno. Este trabalho teve como objetivo estudar o efeito da desinfestação da tesoura de poda com hipoclorito de sódio (2%), no desenvolvimento da podridão gomosa em meloeir...
Progress of Asian soybean rust and airborne urediniospores of Phakopsora pachyr...
Nascimento, Jefferson Fernandes do; Vida, João Batista; Tessmann, Dauri José; Zambolim, Laércio; Vieira, Rafael Augusto; Oliveira, Ricardo Ribeiro deA ferrugem asiática, causada por Phakopsora pachyrhizi, relatada em nível epidêmico em 2003/04, é a principal doença na cultura as soja no Brasil. Este trabalho teve como objetivos estudar o progresso da ferrugem-asiática da soja e quantificar os urediniósporos no ar na região de Campo Mourão no Estado do Paraná, região Sul do Brasil. Três experimentos foram instalados em condições de campo, nas safras 2006/07 ...
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...
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...
Etiology and Management of the Diseases of Peach Palm in Brazil
Mafacioli, Rudimar; Santos, Alvaro Figueredo dos; Tessmann, Dauri José; Vida, João BatistaThe majority of phytosanitary problems in peach palm (Bactris gasipaes var. gasipaes) are still restricted to some plantations. However, with the expansion of planted areas, the damages caused by diseases has increased in nurseries as well as in plantations. The anthracnosis (Colletotrichum gloeosporiodes) is the most important disease of peach palm in Brazil, but other pathogens (Phytophthora palmivora, Fusari...
Efficiency of methods for the detection of Didymella bryoniae associated with s...
Gasparotto, Francielli; Vida, João Batista; Tessmann, Dauri José; Bonaldo, Solange Maria; Aguiar, Ronilda Lana; Penharbel, Marcelo PaesSeeds are the primary inoculum source of Didymella bryoniae on cucurbits cultivated in plastic greenhouse. The objective of this work was to compare the effectiveness of methodologies used for the detection of this pathogen in muskmelon seeds. Four methodologies were evaluated: blotter test with seed freezing and whole seed analysis; blotter test without seed freezing with the analysis of seed parts (seed coat,...
Phathogenicity of Meloidogyne javanica in function of the size of tray cells an...
Santos, Humberto Silva; Scapim, Carlos Alberto; Maciel, Sonia Lucia; Vida, João Batista; Schwan-Estrada, Kátia Regina de FreitasThe root-knot nematode Meloidogyne species are important diseases of lettuce crop. This one being improved by transplanting as the seedling gets resistance with age. Aiming to get the maximum benefit out of this crop management strategy, combinations of tray cell size and seedling transplanting age were evaluated. The completely randomized experimental design was adopted in a factorial scheme (3 x 3 x 2) + 2, w...
Morphophysiological characterization and molecular identification of isolates o...
Caixeta, Marilda Pereira; Corazza, Maria Júlia; Oliveira, Ricardo Ribeiro de; Zanutto, Carlos Alexandre; Nunes, William Mário de CarvalhoThe present work aims to identify 11 isolates of Guignardia citricarpa, the causal agent of the citrus black spot (CBS), obtained from affected fruit in different geographical regions, through PCR and morphophysiological characterization of propagative structures, sporing and mycelial growth in different means of culture, temperatures and photoperiods, under laboratory conditions. Through the PCR test, all isol...
Evaluation of systems for conduction of tomato crops in relation to disease sev...
Santos, Humberto Silva; Perin, Wesley Henrique; Titato, Luiz Gustavo; Vida, João Batista; Callegari, OsniThe objective of this work was to evaluate different methods for tomato production concerning the effects on yield and disease severity in leaves and fruits of the cultivar Santa Clara Miss Brasil of tomato. The experiment was carried out between September/1977 and January/1988 in Maringá-PR. The experimental design consisted of randomized blocks with four repetitions. The experiment unit consisted of two lines...