Inorganic Nutrients
Mostrando 25-36 de 104 artigos, teses e dissertações.
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25. Productive, nutritional and metabolic characteristics of marandu palisadegrass grown with nitrogen and magnesium rates / Características produtivas, nutricionais e metabólicas do capim-marandu submetido a doses de nitrogênio e magnésio
Productive, nutritional and metabolic characteristics of the forage plants may be changed by the nitrogen and magnesium availability. The objective was to study the effects of nitrogen and magnesium rates on marandu palisadegrass growth, by evaluating the shoot and root yield, leaf and root concentrations of nutrients and leaf concentration of inorganic form
Publicado em: 2010
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26. Argilominerais em solos de manguezais da costa brasileira / Clay minerals in mangrove soils of Brazilian coast
Mangroves are transitional ecosytems between continental and marine environments. Its widely distributed along Brazilian coast under great variability of climatic, oceanographic, geological and geomorphological conditions. Its soil mineralogy has a relevant role in the pedogenic processes and biogeochemical behavior of nutrients and potential inorganic and o
Publicado em: 2010
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27. Efeitos dos sistemas de pastejo isolado, simultâneo e alternado de ovinos com bovinos sobre as características da forragem, desempenho, consumo e características de carcaça dos ovinos / Effect of isolated; simultaneous and alternated pasture of sheep and cattle on pasture quality; performance; intake and carcass traits of sheep
The aim of this study was to evaluate the effects of three types of rotational pasture: isolated (I); simultaneous (S); and alternated (A) with sheep and cattle on structural and chemical traits of grass, voluntary dry matter intake, animal performance and carcass traits of sheep. The experimental period lasted 99 days. A experimental area of Panicum maximum
Publicado em: 2010
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28. Qualidade da água e distribuição espacial de foraminíferos bentônicos em estuários das Baías Norte e Sul da Ilha de Santa Catarina (Brasil)
Watersheds with different characteristics lead to different rates of biogeochemical elements that contribute in estuarine systems. Thus, this study investigated the contribution of drainage on the nutrients as well as the responses of benthic foraminifera, with focus on estuarine region of six major systems that discharge in the North and South bays of Santa
Publicado em: 2009
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29. Organic zinc, copper and selenium supplementation in dairy cows and effects on milk quality and mammary gland health / Fornecimento de zinco, cobre e selênio orgânicos para vacas leiteiras e efeitos sobre a qualidade do leite e saúde da glândula mamária
The general objectives of this study were to evaluate the effect organic zinc (Zn), copper (Cu) and selenium (Se) supplementationto dairy cows on milk quality, mammary gland health and feed intake. The specific objectives were to evaluate: the somatic cell count (SCC), clinical and subclinical mastitis prevalence, milk production and composition during the f
Publicado em: 2009
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30. Economic and environmental sustainability of land and use system of family agriculture in State of Acre / Sustentabilidade socioeconômica e ambiental de sistemas de uso da terra da Agricultura Familiar no Estado do Acre
The depletion of Brazilian Amazon has as main negative consequences the greenhouse gas emissions and the extinction of species. The expansion of the agricultural in the Amazon, and particularly in the state of Acre, has been considered the main cause of that deforestation. The forest cut down has not been followed by improvements on the rural household life
Publicado em: 2008
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31. Behavior of dissolved inorganic N in surface and sub-surface waters in a cultivated sugar cane area / Comportamento do N inorgânico dissolvido em águas superficiais e sub-superficiais em área com cultivo de cana-de-açúcar
The sugar cane is an important agricultural activity in Brazil and its productivity is related to several factors, such as the availability of suitable nutrients quantities, with emphasis on the nitrogen. However, the constant use of fertilizers increases the possibility of environmental contamination, mainly in water bodies. In this study were evaluated the
Publicado em: 2008
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32. Comparação dos índices de qualidade da água e usos do fator contaminação e índice de geoacumulação para os sedimentos da microbacia do arroio João Corrêa, São Leopoldo, RS, Brasil
The João Corrêa creek, with 7 km length and a 9.7 km2 micro basin (MbaJC), has its main source into the forested hilly landscape of Sapucaia county and flows trough out the São Leopoldo city, receiving along his course several urban wastes and industrial effluents. Looking for a quantified evaluation of environmental impacts related to human activities, m
Publicado em: 2008
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33. Ecotoxicologia de um sistema florestal de eucalipto tratado com lodo de esgoto / Ecotoxicology of eucalyptus forest system treated with sewage sludge
The application of sewage sludge in forest systems quests the improvement of the production, favoring the physical, chemistries and biological characteristics of the soil and of the plants. However, the sludge can contain pathogen and, organic and inorganic toxics elements, and the effect of these pollutants in the soil and in the plant is still unknown. It
Publicado em: 2008
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34. Studies of nutritional strategies for broiler chikens / Estudos de estratégias nutricionais para frangos de corte
Two experiments were carried to evaluate productive parameters, carcass, abdominal fat, breast fillet yield, ammonia concentration (NH3), retention and excretion of nutrients and economic performance using different nutritional strategies in broiler chickens of 1 to 46 days of age. A random block experimental design was applied, with five treatments of 4 blo
Publicado em: 2008
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35. Efeitos da salinidade e da composiÃÃo iÃnica da Ãgua de irrigaÃÃo sobre o desenvolvimento de plantas de feijÃo-de-corda / Effects of salinity and ionic composition of the water irrigation on the development of cowpea plants [Vigna unguiculata(L.)].
The use of the inadequate water in irrigation can be prejudicial to the plants. The objective of this work was to evaluate the effect of salinity and chemical composition of irrigation water on plant growth, mineral nutrition, gas exchange, and organic solutes contents of cowpea plants [Vigna unguiculata (L.) Walp.]. Plants were cultivated in plastic pots, u
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2007
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36. Aspects of the time-space variation of the phytoplankton biomass and production and related parameters in Santos Estuary and Bay / Aspectos da variação espacial e temporal da biomassa e produção fitoplanctônica e parâmetros correlatos no estuário e baía de Santos
The relationship between time-space variations of phytoplankton biomass and primary productivity and the variability in physical and chemical characteristics of the water column was investigated by monthly samplings of temperature, salinity, inorganic nutrients, seston and phytoplankton biomass in 4 oceanographic stations in Santos Bay and 3 stations in Sant
Publicado em: 2007