Aspectos biológicos de Quesada gigas (Olivier, 1790) (Hemiptera: Cicadidae) em cafeeiro

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV

Ácaro da mancha-anular do cafeeiro: controle em função da cobertura pela calda com ramais e volumes de aplicação

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O problema do financiamento: uma análise histórica sobre o crédito no complexo cafeeiro paulista. Casa Branca (1874-1914)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

O complexo cafeeiro e a influência do crédito na circunscrição do município de Descalvado (1873-1915)

Pós-graduação em História - FCHS

Utilização de água residuária do processo pós-colheita do café na produção de mudas de cafeeiro

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Impacto do aumento da concentração de CO2 atmosférico sobre o período latente e o controle biológico da ferrugem do cafeeiro

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Reprodução de Pratylenchus coffeae e P. jaehni (Nematoda: pratylenchidae) em citros e cafeeiro

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeito de bactérias endofíticas do cafeeiro no controle da ferrugem

Pós-graduação em Agronomia (Proteção de Plantas) - FCA

Cobre via foliar na nutrição e na produção de mudas de cafeeiro

The objective of this study was to evaluate the effect of different sources and doses of copper (Cu) applied to leaves on growth and nutrition of coffee seedlings. The treatments consisted of combinations of two Cu sources (Cupric Sulfate Ammonium - CSA and Copper Sulfate - CS) and four Cu doses (0, 250, 500 and 1000 g ha-1). The sources of Cu in different doses were dissolved in water, calculated for the application volume of 400 L ha-1. The doses were divided in 3 applications at 20 days. The Cu content and concentration in the leaf, stem, and root in were measured. The dry matter of the leaf, stem, root and total and the utilization, absorption and translocation efficiency, in coffee seedlings were evaluated. In general the Cu content and concentration were obtained for the CS at doses of 250, 500 and 1000 g ha-1 Cu. The maximum increase of total dry matter was 48 and 51 g to CSA and CS, when applied 534 and 668 g ha-1, respectively. The highest utilization and absorption efficiency was found to CSA and CS, respectively. The translocation efficiency was similar for both sources.

Modelos duplo sigmoidais para o crescimento de frutos do cafeeiro

Coffee is one of the main products of Brazilian agriculture, the country is currently the largest producer and exporter. Knowing the growth pattern of a fruit can assist in the development of culture indicating for example, the times of increased fruit weight and its optimum harvest, essential to improve the management and quality of coffee. Some authors indicate that the growth curve of the coffee fruit has a double sigmoid shape. However, it consists of just a visual observation without exploring the use of regression models. The aims of this study were: i) determine if the growth pattern of the coffee fruit is really double sigmoidal; ii) to propose a new approach in weighted importance re-sampling to estimate the parameters of regression models and select the most suitable double sigmoidal model to describe the growth of coffee fruits; iii) to study the spatial distribution effect of the crop in the growth curve of coffee fruits. In the first article the aim was determine if the growth pattern of the coffee fruit is really double sigmoidal. The models double Gompertz and double Logistic showed significantly superior fit to models of simple sigmoid confirming that the standard of coffee fruits growth is really double sigmoidal. In the second article we propose to consider an approximation of the likelihood as the candidate distribution of the weighted importance resampling, aiming to facilitate the process of obtaining samples of marginal distributions of each parameter. This technique was effective since it provided parameters with practical interpretation and low computational effort, therefore, it can be used to estimate parameters of double sigmoidal growth curves. The nonlinear model double Logistic was the most appropriate to describe the growth curve of coffee fruits. In the third article aimed to verify the influence of different planting alignments and sun exposure faces in the fruits growth curve. A difference between the growth rates in the two stages of fruit development was identified, regardless the side. Although it has been proven differences in productivity and quality of coffee, there was no difference between the growth curves in the different planting alignments herein studied.

Espaçamentos para cafeeiro (Coffea arabica L.) com e sem irrigação em região de cerrado

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Distribuição de inseticidas em frutos do cafeeiro (coffea arabica l.) e eficiência no controle da broca-do-cafeeiro (Hypothenemus Hampei F.)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Absorção e translocação de boro em cafeeiro

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Cultivo consorciado do cafeeiro (coffea arabica L.) e cultivares da nogueira-macadâmia (Macadamia integrifolia maiden e betche) sob os regimes sequeiro e irrigado

Pós-graduação em Agronomia (Agricultura) - FCA

Métodos de estimativa da evapotranspiração de referência para a mesoregião do Triângulo Mineiro e Alto Paranaíba-MG

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)