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Microbiological quality of organic and conventional vegetables sold in Brazil
(2013-01-01)
While searching for healthier diets, people became more attentive to organic produce. Yet, organic foods may be more susceptible to microbiological contamination because of the use of organic fertilizers, a possible source ...
Dairy goat health management and milk production on organic and conventional system in Brazil
(2013-05-01)
The aimed of this article is to measure risk factors on health and milk production on organic and conventional dairy goats in Brazil. Two experimental groups (organic and conventional) were evaluated simultaneously. The ...
Carbono orgânico e carbono residual do solo em sistema de plantio direto, submetido a diferentes manejos
(2011-07-01)
The organic carbon is a major component of the soil organic matter, and its stock is influenced by the type of management system used. This study aimed to evaluate the effect of two cropping systems, with and without cover ...
Work and technological innovation in organic agriculture
(IOS Press, 2012-01-01)
Organic agriculture is a sustainable cultivation ecologically, economically and socially. Several researches in organic agriculture have been made from technical perspectives, economic traits or related to ecological ...
Effects of methylmercury on electric organ discharges in the weak electric fish Gymnotus sylvius
(2013-07-05)
Methylmercury (MeHg) is present in the environment because of natural and anthropogenic causes. MeHg can reach the central nervous system (CNS) and cause neurological damage in humans and animals. Electric organ discharges ...
Fertilizante orgânico como fonte de fósforo no cultivo inicial de brachiaria brizantha cv. Marandú
(2010-04-01)
Phosphorus is considered an essential element for plants, but it is found in low amounts in Brazilian soils, mainly in areas destined to pastures, and the application of organic matter contributes to the improvement of ...
Determination of Total Nitrosamines in Vegetables Cultivated Organic and Conventional Using Diamond Electrode
(2013-07-10)
Vegetables were analyzed for total N-nitrosamines (NAs) and the influence of disinfection processes was assessed. Differences in NAs found in cabbage, spinach, and broccoli were determined by square wave voltammetry using ...
Soil microbial biomass and organic matter fractions during transition from conventional to organic farming systems
(Elsevier B.V., 2012-01-15)
The aim of this study was to investigate the response of soil microbial biomass and organic matter fractions during the transition from conventional to organic farming in a tropical soil. Soil samples were collected from ...
Extração de matéria orgânica aquática por abaixamento de temperatura: Uma metodologia alternativa para manter a identidade da amostra
(2003-03-01)
In this work was developed an alternative methodology to separation of aquatic organic matter (AOM) present in natural river waters. The process is based in temperature decreasing of the aqueous sample under controlled ...
Estoque de carbono orgânico no solo afetado por adubação orgânica e sistemas de culturas no Sul do Brasil
(Universidade Estadual de Londrina (UEL), 2012-01-01)
Organic carbon is a major component of soil organic matter and its stock is influenced by the management system adopted. This study aimed to examine the effects of cropping systems and nutrient sources (mineral and organic) ...