6 documents found, page 1 of 1
Modelos lineares generalizados na agronomia: análise de dados binomiais e de co...
Carvalho, Fábio JanoniPara a validação de qualquer pesquisa científica é necessário um embasamento estatístico correto. Apesar de reconhecer a estatística como elemento-chave da integridade de uma investigação, o uso inadequado é comum nas Ciências Agrárias. No primeiro capítulo há uma pesquisa bibliográfica feita na revista Ciência e Agrotecnologia, em que se discutiram os métodos estatísticos e os erros encontrados, tendo estimula...
Diversity of fungi in seeds of hymenaea stignocarpa and hymenaea courbaril befo...
Costa, Nayara Cecília Rodrigues; Carvalho, Fábio Janoni; Juliatti, Fernando Cezar; Castro, Mariana Viana; da Cunha, Walter VieiraThe recovery of degraded areas led to an increase of native forest seedlings production. Jatoba-do-cerrado (Hymenaea stignocarpa Mart.) and jatoba-da-mata (Hymenaea courbaril L.), native species of the Brazilian Cerrado, are widely used for the recovery of this biome. Although forest species present a diversity of pathogens disseminated by seeds, few studies have been published and no study was found for jatoba...
Physiological quality of parsley seeds in relation to doses of nitrogen and pot...
Maciel, Gabriel Mascarenhas; Carvalho, Fábio Janoni; Almeida, Cinara Xavier de; Luz, José Magno Queiroz; Nogueira, Gregory Gustavo SilvaParsley seeds [Petroselinum crispum (Mill.) Nyman ex AW Hill] must have germinations higher than 70%. But seed companies have found difficulties to get the minimum standards of germination established for this species, because of the slow and irregular germination after harvesting. The aim of this study was to evaluate the effect of nitrogen and potassium fertilization on the physiological quality of parsley se...
Solar radiation estimated from empirical models for the north of Minas Gerais, ...
da Silva, Valdiney José; Carvalho, Fábio Janoni; da Silva, Claúdio Ricardo; Atarassi, Roberto Terumi; Almorox, JavierEstimating daily solar radiation (Rs) provides an important alternative in situations where it cannot be measured by conventional pyranometers. This study used meteorological data from nine cities in the north of the Minas Gerais state, Brazil, for the period from 2008 to 2010 with the aim of evaluate the accuracy and applicability of some simple models to help regions where Rs is impossible to be measured. Fiv...
Análise de experimentos de germinação usando os modelos lineares generalizados
Carvalho, Fábio JanoniCHAPTER II: Analysis of variance (ANOVA) is one of the most important statistical models applied in agronomic experiments, especially in the seeds area. Based on strong assumptions, it lasted for many years with the support of techniques such as data transformation. As ANOVA being a special case of Generalized Linear Models (GLM), a classic experiment of seeds germination of tree species Copaifera langsdorffii ...
Genetic, environmental effects and storage period in onion seeds quality
Maciel, Gabriel Mascarenhas; Carvalho, Fábio Janoni; Fernandes, Marco Aurélio Rocha; Beloti, Igor Forigo; oliveira, Camila Soares deIn several species, seed longevity may be influenced by genotype and storage environment. It is scarce researches that evaluated those effects in onion seeds. From the exposed, it was aimed to evaluate the behavior from onion seeds of different genotypes stored in three conditions of relative humidity (25; 35 and 45% RH) monitored during six different storage periods. The research was executed at the Laboratóri...