Biological Fertilizers
Mostrando 13-24 de 47 artigos, teses e dissertações.
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13. Using Macrocystis pyrifera (L.) C. Agardh from southern Chile as a source of applied biological compounds
The exploitation of seaweeds in Chile has been carried out for more than 60 years. More recently, seaweeds have been used for the production of alginate, agar and carrageenan, agricultural fertilizers and industrial aquaculture (feed for abalone and sea urchins), increasing the added value of this natural resource. In the Magellan Region (56ºS), the giant k
Revista Brasileira de Farmacognosia. Publicado em: 06/05/2011
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14. Contribuição da micorriza arbuscular na resposta das culturas à calagem e adubação fosfatada em solos de cerrado.
ABSTRACT: The crop production in the cerrado soils may be improved when high amounts of lime and phosphate fertilizers are used. An economical management alternative of these inputs involves biological processes as the arbuscular mycorrhiza. The presence of arbuscular mycorrhizal fungi in the soil and the consequent root colonization cause an alteration in t
Planaltina. Publicado em: 2011
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15. Effect of green manure species and their sowing dates on common bean crop.
Nitrogen is the most required nutrient by common bean (Phaseolus vulgaris L.). Although common bean can obtain this nutrient from atmosphere by the biological nitrogen fixation (BNF) process, the fixed amounts are not enough to supply all plant necessities. Under agroecological production systems, part of the required N could be supplied by green manures as
Annual Report of the Bean Improvement Cooperative. Publicado em: 2011
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16. Green manure incorporation timing for organically grown broccoli.
The objective of this work was to determine the effect of incorporation timing of the velvet bean (Stizolobium cinereum) (GM) on both organic broccoli yield and N status. Mineral N content in the soil, biologically fixed N recovery by broccoli, GM biomass decomposition and N release kinetics were also determined. Plots were fertilized with 12 Mg ha-1 of orga
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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17. Uso de parâmetros microbiológicos como indicadores para avaliar a qualidade do solo e a sustentabilidade dos agroecossistemas.
ABSTRACT: Every factor that has a negative impact on soil microorganisms sooner or later will reflect in a deterioration of soil chemical and physical properties specially, those related to soil organic matter losses. This paper was based on a talk presented at "The International Symposium of Indicators of Soil Quality" held on Marco Juarez-Argentina. Some o
Planaltina. Publicado em: 2011
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18. Adubação nitrogenada suplementar tardia em soja cultivada em latossolos do Cerrado.
O objetivo deste trabalho foi avaliar se a adubação nitrogenada, nos estádios de pré-florescimento (R1) e início do enchimento de grãos (R5), interfere na produtividade e na nodulação da soja. O estudo foi realizado por sete anos, em Latossolo Vermelho-Amarelo argiloso e, por quatro anos, em Latossolo Vermelho argiloso, ambos com populações estabe
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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19. 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
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20. Inoculation with selected strains of Azospirillum brasilense and A. lipoferum improves yields of maize and wheat in Brazil.
Interest in the use of inoculants containing bacteria that promote plant growth is likely to increase in the coming years, due to higher costs of fertilizers, concerns over pollution and emphasis on sustainable agriculture. Although Brazil has a long tradition in research on nitrogen fixation in Azospirillum-grass associations, it has not led to recommendati
Plant and Soil. Publicado em: 2011
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21. Otimização do manejo da pinta preta causada por Guignardia citricarpa Kiely na produção ecológica de tangerinas cv. Montenegrina sob a ótica da pesquisa participativa / Optimization of management techniques of black spot (Guignardia citricarpa Kiely.) in ecological orchards of tangerine trees cv. montenegrinafrom the perspective of participatory research
In the state of Rio Grande do Sul many citric species are grown, the town of Montenegro, in Vale do Caí/RS stands out among the most important producers. For the production of fruits for in natura consumption most of the local farmers adopt technological packages that consist in the use of chemical inputs and in environmetal simplification. However, experim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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22. Establishment of recommendations and parameters for use of urban waste compost in agriculture in the State of Sao Paulo - Brazil.
The organic matter present in urban waste (45 to 60% of total dry mass), after being stabilized in the form of compost, is recommended for application in agricultural soils, since it improves its physical and chemical properties and benefits the soil biological processes. Also, the urban waste compost has been economically viable for application in agricultu
INTERNATIONAL ORBIT CONFERENCE. Publicado em: 2011
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23. Oxidação microbiológica do enxofre elementar no solo / Microbiological elemental sulfur oxidation in soil
Reduções dos níveis de sulfato nos solos vêm sendo observadas em função de práticas agrícolas e exportação de biomassa. O enxofre Elementar (S0) pode ser usado como fertilizante, contudo para ser absorvido pelas plantas deve ser antes oxidado a sulfato. A oxidação microbiológica do S0 está associada com Acidithiobacillus thiooxidans, apesar de
Publicado em: 2011
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24. Tratamento de água para consumo humano de reservatório eutrofizado através de pré e interoxidação, adsorção em carvão ativado e dupla filtração / Drinking water treatment of eutrophic reservoir by pre and interoxidation, activated carbon adsorption and double filtration
Disordered basins occupation provoked acceleration of eutrophication, which besides purely aesthetic and landscaping problems, results in occurrence of high phytoplankton densities with potentially toxic cyanobacteria dominance. Alongside physical aging and consequent deterioration of installations, usual treatment technologies do not provide adequate condit
Publicado em: 2011