Consulta: creatorFacets:"Pazini,Juliano de Bastos"
Registros recuperados: 6
Data/hora: 10/06/2024 06:27:43

Mortalidade de percevejo-do-colmo do arroz no preparo do solo para cultivo mínimo
Provedor de dados: 86
Autores: Pazini,Juliano de Bastos; Botta,Robson Antônio; Silva,Fernando Felisberto da.
O objetivo deste trabalho foi verificar a influência do manejo da resteva do arroz irrigado, durante o preparo do solo, sobre a redução populacional pré-hibernante do percevejo-do-colmo (Tibraca limbativentris). Os tratamentos consistiram dos seguintes manejos da resteva: uma passada de grade aradora; duas passadas de grade aradora; duas passadas de grade aradora mais uma passada de grade niveladora; e controle. Em cada unidade amostral, determinou-se o número de ninfas e adultos do percevejo-do-colmo. No preparo do solo, no mínimo duas passadas com grade aradora são necessárias para a redução populacional pré-hibernante do percevejo-do-colmo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tibraca limbativentris; Controle mecânico; Manejo da resteva; Resteva do arroz.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000700020

Relationship between the occurrence of the rice water weevil and water depth in flooded rice crop
Provedor de dados: 86
Autores: Büttow,Germano Tessmer; Pazini,Juliano de Bastos; Seidel,Enio Júnior; Silva,Fernando Felisberto da; Grützmacher,Anderson Dionei; Martins,José Francisco da Silva.
Abstract: The objective of this work was to assess the relationship between the depth of irrigation water and larval infestation by Oryzophagus oryzae in flooded rice crop. Water depth and larval infestation were evaluated in the upper levee, in between levees, and in the lower levee. The data were subjected to the descriptive statistical and geostatistical analyses. The highest larval infestation occurs in field areas with greater water depth, which is typical of the lower levee. The spatial distribution of O. oryzae larvae is of the aggregate type and depends on the greater irrigation water depth.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Oryzophagus oryzae; Geostatistics; Spatial distribution.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000700557

Mapping of spatiotemporal distribution of Tibraca limbativentris Stal (Hem.: Pentatomidae) in flooded rice crop in Southern Brazil
Provedor de dados: 92
Autores: Costa,Helen da Silva; Seidel,Enio Júnior; Pazini,Juliano de Bastos; Silva,Augusto Maciel da; Silva,Fernando Felisberto da; Martins,José Francisco da Silva; Barrigossi,José Alexandre Freitas.
ABSTRACT The rice stem bug, Tibraca limbativentris Stal (Hem.: Pentatomidae), is one of the main insect pests in Brazilian rice crops. Knowledge of its spatiotemporal distribution can support the development of an effective sampling system and improve IPM strategies. This study aimed to map the spatiotemporal distribution of rice stem bug in flooded rice crop in Southern Brazil. Flooded rice crop was scouted for two seasons to estimate insect densities. Four occurrence categories were observed: no insect, only adults, only nymphs, and both phases. The relationship between phenological stages and insect categories was established. Interpolation (mapping) of occurrence categories of T. limbativentris was performed by multiquadric equations. In two seasons...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insect ecology; Multiquadric equations; Oryza sativa L.; Pest monitoring; Rice stem bug.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000300205

Geostatistics applied to the study of the spatial distribution of Tibraca limbativentris in flooded rice fields
Provedor de dados: 65
Autores: Pazini,Juliano de Bastos; Botta,Robson Antonio; Seidel,Enio Júnior; Silva,Fernando Felisberto da; Martins,José Francisco da Silva; Barrigossi,José Alexandre Freitas; Rübenich,Rodrigo.
Tibraca limbativentris (rice stem bug) is an insect highly injurious to the rice crop in Brazil. The aim of this research was to define the spatial distribution of the T. limbativentris and improve the sampling process by means of geostatistical application techniques and construction of prediction maps in a flooded rice field located in the "Planalto da Campanha" Region, Rio Grande do Sul (RS), Brazil. The experiments were conducted in rice crop in the municipality of Itaqui - RS, in the crop years of 2009/10, 2010/11 and 2011/12, counting fortnightly the number of nymphs and adults in a georeferenced grid with points spaced at 50m in the first year and in 10m in the another years. It was performed a geostatistical analysis by means adjusting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Rice stem bug; Dispersion; Monitoring.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601006

Método de amostragem do pulgão-da-raiz na cultura do arroz irrigado
Provedor de dados: 65
Autores: Silva,Fernando Felisberto da; Martins,José Francisco da Silva; Pazini,Juliano de Bastos; Botta,Robson Antonio; Rosa,Ana Paula Schneid Afonso da.
Com objetivo de definir um método eficiente para amostragem do pulgão-da-raiz do arroz (Rhopalosiphum rufiabdominale), foi realizado um experimento num arrozal irrigado por inundação, da cultivar 'Avaxi', localizado em Santa Vitória do Palmar, RS. Retiraram-se amostras padrão de solo e raízes à profundidade de 5cm, utilizando um amostrador constituído por um tubo de PVC rígido (15cm de altura x 5cm de diâmetro), abrangendo uma planta de arroz no topo das taipas. As amostras padrão foram submersas e agitadas num copo plástico com capacidade de 750mL, contendo água, até o solo desprender totalmente das raízes, sendo o número de pulgões sobrenadantes contabilizado. Após a contagem inicial, todo o material (solo e fragmentos vegetais) restante nos copos e...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Rhopalosiphum rufiabdominale; Monitoramento; Solo.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000400633

Some aspects about the spatial dependence index for variability of soil attributes
Provedor de dados: 65
Autores: Santos,Eduardo Lucas Ensslin dos; Seidel,Enio Júnior; Pazini,Juliano de Bastos; Oliveira,Marcelo Silva de; Appel Neto,Edemar; Barbosa,Ismael Canabarro.
ABSTRACT: The main purpose of this article was to evaluate the behavior and relationship of the range and components of SDI (Spatial Dependence Index) in general and in function of field factors such as soil types, type of attribute and soil layers. This evaluation was based on real data collected in national journals. It was noticed that the parameter range, in general and for different field factors, presented asymmetric positive behavior. The components of the SDI showed approximately symmetrical behavior. The SDI can capture the range behavior more intensely (the spatial variability behavior in the horizontal direction of the semivariogram), and, in a less intense way, the behavior of the contribution and sill parameters (the spatial dependence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spatial dependence; Geostatistics; Semivariogram; Field factors.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000600252