8 documents found, page 1 of 1
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,...
Agronomic performance of new popcorn hybrids in Northwest of Paraná State, Braz...
Vieira, Rafael Augusto; Rodovalho, Marcos de Araújo; Scapim, Carlos Alberto; Tessmann, Dauri José; Amaral Júnior, Antônio Teixeira doIn maize, variations on agronomic performance in distinct environments are common and more evident for one-way hybrids. The objective of this work was to evaluate the performance of new one-way popcorn hybrids developed by the Breeding Program of the State University of Maringá, in northwestern Paraná. The characteristics evaluated were: grain yield, popping expansion, plant height, ear height and the intensity...
Diagnosis and perspectives of weed management in peach palm in northwest of Par...
Oliveira Júnior, Rubem Silverio de; Constantin, Jamil; Inoue, Mirian Hiroko; Carreira, Sílvio Anésio Mesquita; Dvoranen, Eslauco CésarA field survey accomplished for 24 areas cropped with peach palm in northwest Paraná provided enough information to show a high occurrence of weeds such as Brachiaria decumbens, Cenchrus echinatus, Panicum maximum, Emilia sonchifolia, Sida spp, and Sida micranthum. Most difficult weeds to control are perennial such as Cynodon dactylon, Cyperus spp. and S. micranthum), or those where glyphosate is less effective...