Land Productivity
Mostrando 13-24 de 90 artigos, teses e dissertações.
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13. Managing agricultural phosphorus to minimize water quality impacts
ABSTRACT Eutrophication of surface waters remains a major use-impairment in many countries, which, in fresh waters, is accelerated by phosphorus (P) inputs from both point (e.g., municipal waste water treatment plants) and nonpoint sources (e.g., urban and agricultural runoff). As point sources tend to be easier to identify and control, greater attention has
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-02
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14. Intensificación agrícola y pérdida de servicios ambientales en el partido de Azul (Provincia de Buenos Aires) entre 2002-2011
In recent decades, Argentinean agriculture, especially in the Pampas ecoregion, has undergone a remarkable expansion based on technological development. This process allows increasing productivity but it increases costs in terms of loss of environmental services. This paper aims at analyzing the loss of some support and regulation services in the period 2002
Soc. nat.. Publicado em: 2013-12
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15. Biodiesel de microalgas: avanços e desafios
Microalgae biomass has been described by several authors as the raw material with the greatest potential to meet the goals of replacing petroleum diesel by biodiesel while not competing with arable land suitable for food production. Research groups in different countries are seeking the most appropriate production model for productivity, economic viability a
Quím. Nova. Publicado em: 2013
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16. Mecanização e intensificação do trabalho no corte de cana do CAI canavieiro do estado de São Paulo
Assuming that the work is the central category in the production process, the relationship between the recent modernization, in special in the harvesting activities, and the manual harvesting work intensification were studied in the Sugarcane Agroindustrial Complex of São Paulo State. The work intensification, which involves high energy expenditure by the w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/11/2012
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17. Análise da eficiência técnica e fronteiras de produção na orizicultura do Rio Grande do Sul e de Mostardas
This work aim at measuring the relative technical efficiency and the frontiers of production in Rio Grande do Sul and Mostardas County irrigated rice production, considering the rice census database carried out by the Rio Grandense Rice Institute (IRGA), harvest 2004/2005. This survey seeks to identify the determining factors of this rice production efficien
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/08/2012
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18. Análise de patentes de tecnologias relacionadas a resíduos de equipamentos elétricos e eletrônicos / Analysis of patents for technologies related to waste electrical and electronic equipment
The problem of solid waste has been touted as one of the most serious to date. The increasing scarcity of land for the establishment of new landfills, combined with the existing limitations for the recovery of non-renewable materials, low degree of implementation of new treatment alternatives and recycling, now represent a major challenge. Therefore, conside
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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19. Identification and quantification of benchmarks of milk production systems in Minas Gerais
The objective of this study was to identify and quantify benchmarks of milk production systems. The technological profile and size, livestock and economic indicators of sixteen farms in the region of Triângulo Mineiro were analyzed. Indicators correlated with rate of return on capital (RRC) were identified and quantified in four scenarios of RRC (6, 8, 10 a
R. Bras. Zootec.. Publicado em: 2012-10
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20. Water-deficit tolerant classification in mutant lines of indica rice
Water shortage is a major abiotic stress for crop production worldwide, limiting the productivity of crop species, especially in dry-land agricultural areas. This investigation aimed to classify the water-deficit tolerance in mutant rice (Oryza sativa L. spp. indica) genotypes during the reproductive stage. Proline content in the flag leaf of mutant lines in
Scientia Agricola. Publicado em: 2012-04
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21. Development and application of a bioeconomic efficiency index for beef cattle production in Rio Grande do Sul, Brazil
An index was developed to estimate the bioeconomic efficiency of production systems, identifying alternative scenarios that could improve their efficiency, and building isoefficiency relations in beef cattle production systems in Rio Grande do Sul. The concept of return on investment was used to develop the indicator. Scenarios regarded as efficient showed v
Revista Brasileira de Zootecnia. Publicado em: 2012-03
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22. Avaliação econômica da terminação de bovinos em pastagem irrigada / Economic evaluation of finishing of cattle in irrigated pasture
The adoption of new technologies with the aim of intensifying the production of beef cattle has increased in recent years. Irrigation of pasture is one of these alternatives on the rise and this study aimed to determine the economic viability of finishing cattle by measuring the production costs and financial indicators. This study evaluated three production
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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23. Effects of silvopastoral systems on the production of buffaloes on Eastern Amazon, Brazil.
The silvopastoral systems (SPS) are characterized by the deliberate combination of trees, pasture and animals in the same area and at the same time. In these systems, the components present integrated management, with the aim of increasing productivity per area unit, with interaction in all directions and at different magnitudes. These production systems aim
WORLD BUIATRICS CONGRESS. Publicado em: 2011
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24. Program, abstracts and related documents.
The context: Soil biodiversity and sustainable agriculture; Abstracts - Theme 1: Monitoring and assessment: Bioindicators of soil health: assessment and monitoring for sustainable agriculture; Practical tools to measure soil health and their use by farmers; Biological soil quality from biomass to biodiversity - importance and resilience to management stress
Londrina: Embrapa Soybean: FAO. Publicado em: 2011