Espaçamentos entre plantas e cobertura do solo com cama-de-frango na produção da bardana (Arctium lappa L.)

Estudo Bibliométrico da Produção Científica de Gerenciamento de Riscos entre os Anos de 2000 e 2012

Effects of ground cover from branches of arboreal species on weed growth and maize yield1 Efeitos da cobertura do solo com ramos de espécies arbóreas no crescimento das plantas daninhas e rendimento do milho

Cultivating maize under systems of alley cropping results in improvements to the soil, a reduction in weeds and an increase in yield. Studies using ground cover from tree shoots produce similar results. The aim of this study was to evaluate the effects on weed growth and maize yield of ground cover made up of 30 t ha-1 (fresh matter) of branches from the tree species: neem (Azadirachta indica A...

Effect of N and K doses in nutritive solution on growth, production and coffee bean size

O suprimento adequado de nutrientes ao cafeeiro é essencial para obtenção de alta produtividade. O objetivo deste trabalho foi avaliar o efeito do nitrogênio, do potássio e da relação N:K no crescimento vegetativo e reprodutivo do cafeeiro. Para isto, plantas de café receberam solução nutritiva, contendo K nas concentrações de 1,08; 2,15; 3,23 e 5,38 mmol L, combinadas com a dose de 6 mmol L de...

Dinamica fluvial do rio Amazonas entre Manaus e Itacoatiara com o uso de imagens de satelite

The Amazon river is subject to major geomorphological changes between the hydrologic periods of flood and dry. Such changes can be mapped and detected by remote sensing techniques. In this context, this research had as objective to evaluate the dynamics of this great fluvial system, in the stretch between the cities of Manaus and Itacoatiara, in the period of 20 years. The results showed the pr...

Efeito da Temperatura e Cama do Aviário na Virulência de Beauveria bassiana (Bals.) Vuill. e Metarhizium anisopliae (Metsch.) para o Controle do Cascudinho (Alphitobius diaperinus) (Panzer) (Coleoptera: Tenebrionidae)

This study was carried out to evaluate the influence of temperature and poultry litter on germination vegetative growth virulence and conidial production of Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) isolates on larvae and adults of the lesser mealworm (Alphitobius diaperinus) (Panzer). The vegetative growth and conidial production were evaluated on culture media. Vi...