12 documents found, page 1 of 2
Physico-chemical characteristics and productivity of tomato plants in function ...
Assunção, Natália Silva; Silva, Natalia Oliveira; Fernandes, Flávio Lemes; Aquino, Leonardo Angelo de; Fernandes, Maria Elisa de SenaThe objective of this study was to evaluate the effect of nitrogen sources and rates on the physicochemical characteristics and yield of tomato plants. Forty hybrids were cultivated at 100 and 400 kg ha-1 of N, combined with four sources (urea, ammonium sulfate, ammonium nitrate and calcium), plus a treatment without N application in a randomized complete block design four replicates. Size, stem diameter, numbe...
Non-destructive evaluation of the leaf area of garlic crop using mathematical m...
Gonçalves, Felipe Augusto Reis; Senoski, Marcelo de Paula; Raposo, Thiago Picinatti; Aquino, Leonardo Angelo de; Fernandes, Maria Elisa de SenaGrowth measurements such as leaf area (LA) and dry matter (DM) are important in experiments about plants population, fertilization, irrigation and others parameters of cultivation, in garlic crop. The LA and DM are commonly defined as destructive, lengthy and cause loss of plants in the experimental units. The objective of this study was to fit mathematical models using linear models that estimate the leaf area...
Chlorantraniliprole–mediated effects on survival, walking abilities, and respir...
Plata-Rueda, Angelica; Martínez, Luis Carlos; Zanuncio, José Cola; Fernandes, Maria Elisa de Sena; Serrão, José Eduardo; Guedes, Raul Narciso CarvalhoHypothenemus hampei Ferrari (Coleoptera: Curculionidae) is the main pest of coffee crops, and effective methods for pest management are needed urgently. Bioassays were conducted to assess the effects of the insecticide chlorantraniliprole on H. hampei adults. Toxicity, survivorship, larval production, respiration rate, and behavioral responses to six concentrations of chlorantraniliprole were evaluated. Chloran...
Flight movement and spatial distribution of immunomarked thrips in onion, potat...
Fernandes, Flávio Lemes; Fernandes, Maria Elisa de SenaO objetivo deste trabalho foi avaliar a distribuição espacial de tripes em diferentes cultivos, e a correlação entre os parâmetros meteorológicos e o movimento de voo dessa praga, com uso de imunomarcação. O experimento foi conduzido em área cultivada com tomate (Solanum lycopersicum), batata (Solanum tuberosum) e cebola (Allium cepa); e não cultivada, com plantas daninhas. As áreas com tomate (100 dias), batat...
Induced responses of Coffea arabica to attack of Coccus viridis stimulate locom...
Fernandes, Flávio Lemes; Picanço, Marcelo Coutinho; Gontijo, Pablo Costa; Fernandes, Maria Elisa de Sena; Pereira, Eliseu José GuedesThe green scale, Coccus viridis (Green) (Hemiptera: Coccidae), is an insect pest of coffee and several other perennial cultivated plant species. We investigated changes in alkaloid and phenolic contents in coffee plants as a response to herbivory by this insect. Greenhouse‐grown, 11‐month‐old coffee plants were artificially infested with the coccid and compared with control, uninfested plants. Leaf samples were...
Biological control of phytophagous arthropods in the physic nut tree Jatropha c...
Fernandes, Flávio Lemes; Fernandes, Maria Elisa de Sena; Lopes, Elisângela Novais; Venzon, Madelaine; Diniz, Juno Ferreira da SilvaJatropha curcas possui alto teor de óleo biocombustível que poderia substituir os combustíveis poluentes, possuindo grande potencial para o cultivo em larga escala de monocultivos no sistema convencional. Nós exploramos a ocorrência, a distribuição espacial e a resposta funcional das principais espécies fitófagas e seus inimigos naturais com potencial para controle biológico conservativo. Começamos a amostragem...
Economic damage levels and treatment thresholds for leafminer insects in Solanu...
Alves, Flávia Maria; Gonring, Alfredo Henrique Rocha; Zanuncio, José Cola; Fernandes, Maria Elisa de Sena; Plata-Rueda, AngelicaIntegrated Pest Management (IPM) can only result in reduced insecticide use when treatments are applied when infestations reach economic thresholds (ET) determined from economic injury levels (EIL). The objective of this study was to determine the EIL and ET for Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae) and Liriomyza huidobrensis (Burgess) (Diptera: Agromyzidae) in 8 and 11 fields of the potat...
Tomato plant inheritance of antixenotic resistance to tomato leafminer
Antônio, Adilson de Castro; Silva, Derly José Henriques da; Picanço, Marcelo Coutinho; Santos, Nerilson Terra; Fernandes, Maria Elisa de SenaO objetivo deste trabalho foi determinar a herança da resistência por antixenose em plantas de tomate (Lycopersicon esculentum) à traça-do-tomateiro [Tuta absoluta (Lepidoptera: Gelechiidae)]. As avaliações foram realizadas em plantas de tomate das gerações P1, P2, F1, F2, RC1 e RC2. A característica medida nos pais, BGH-1497 (masculino P2) e 'Santa Clara' (feminino P1), e nas gerações F1, F2, RC1 e RC2 foi o n...
DOES SULPHUR EXPEL THE COFFEE BERRY BORER FROM Coffea arabica L. FRUITS?
Endo, Ricardo Tsuyoshi; Junior, Salmo de Melo Davi; Silva, Rafael Vinhal; Fernandes, Maria Elisa de Sena; Pereira, Renata CunhaTechnicians and insecticide retailers recommend adding sulfur to the insecticide mixture to expel coffee borer females (Hypothenemus hampei ) from the fruit. The objective in this study was to verify if sulfur expels the coffee borer from the fruit and what the cost associated with the use of sulfur in the insecticide mixture is. Perforated fruits were collected from coffee crops (Red Catuaí, IAC 144) during th...
Capacidade combinatória entre fontes de resistência de Solanum sp. à Tuta absol...
Fernandes, Maria Elisa de SenaConselho Nacional de Desenvolvimento Científico e Tecnológico; The tomato leafminer, Tuta absoluta is an important pest of Solanum lycopersicum. In the search for improved varieties are resistant to this insect. One technique that helps in the choice of parents is to diallel. The diallel allows the estimation of general ability (GCA) and specific combining (CEC). So the goal was inferred from work on the combin...