Dry Matter Distribution
Mostrando 13-24 de 62 artigos, teses e dissertações.
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13. Índice de agresividad espacial (IAE) de Chenopodium album en el cultivo de algodón para santiago del estero, Argentina
The Space Aggressiveness Index (SAI) is a bio-ecological parameter that depicts weed distribution characteristics. There are not antecedents about this subject in cotton crop. This paper was aimed at determining the space aggressiveness index for Chenopodium album (CHEAL) and relating it to yield losses. Work was done on the Guazuncho-INTA cultivar throughou
Planta Daninha. Publicado em: 2011-09
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14. Fertilization and oversowing on natural grassland: effects on pasture characteristics and yearling steers performance
The objective of this study was to evaluate the vegetal and animal production of a natural pasture on a Mollisol soil in the region of Campanha, in RS. The experimental design consisted of complete randomized blocks with three replicates, which enables the comparison between natural unfertilized pastures with fertilized pastures and pastures fertilized and o
Revista Brasileira de Zootecnia. Publicado em: 2011-09
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15. Macrobenthic community structure in a Brazilian chocked lagoon system under environmental stress
Saquarema-Jaconé lagoonal system (SJLS) comprises a sequence of five interconnected shallow brackish lagoons with access to the sea by a single permanent tidal channel. It is a eutrophic system, receiving constant input of organic load from its urbanized catchments. The relationship between several environmental variables and the spatial-temporal distributi
Zoologia (Curitiba). Publicado em: 2011-06
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16. Effects of the physiological age of seed potatoes on tuber initiation and starch and dry matter accumulation.
The physiological age of seed potato tubers (Solanum tuberosum L.) modifies several morphological, physiological and agronomic characteristics of the crop. However, there is little evidence on the possible influence of physiological age upon the mechanism involved in tuber initiation and starch accumulation. This study investigated the effects of the physiol
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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17. Levantamento dos níveis de radioatividade natural em águas do alto Vale do Ribeira à planície costeira do litoral sul do Estado de São Paulo / Assessment of natural radioctivity levels in waters from Higher Ribeira Valley until the southern Sao Paulo State coastal plain
The complex exchange of fluvial, subsurface and seawater within a coastal area directly affects global biogeochemical cycles and the application of isotopic tracers, mainly natural radionuclides from U and Th series, is a powerful tool to track sources and sinks of trace elements and nutrients to this systems. The unique Ra signature applied to quantify the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/11/2010
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18. Origin and composition of particulate organic matter in the estuarine-lagoon complex Mundaú-Manguaba using lipids as molecular markers / Origem e composição da matéria orgânica particulada no complexo estuarino-lagunar de Mundaú-Manguaba utilizando lipídios como marcadores moleculares
The Mundaú-Manguaba estuarine lagoon system is located in Maceió, Alagoas, Brazil. This region has been suffering an accelerated process of environmental degradation through many antropic activities like urban growth, sugar-cane processing, cattle breeding, industrials waste and sewage. The aim of this work is to evaluate the suspended particulate matter c
Publicado em: 2010
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19. Lipídios como indicadores de fontes e distribuição de matéria orgânica particulada em um complexo estuarino-lagunar tropical (Mundaú-Manguaba, AL)
Fatty acids, alcohols and sterols were considered as markers of the source and distribution of particulate organic matter during the dry season in the Mundaú-Manguaba estuarine-lagoon system, NE Brazil. Lipid composition showed an overwhelming influence of autochthonous sources of organic matter in all system´s compartments, including the probable occurren
Química Nova. Publicado em: 2010
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20. PROPRIEDADES FÍSICAS E QUÍMICAS DE UM SOLO ARENOSO SOB O CULTIVO DE Eucalypus spp. / PHYSICAL AND CHEMICAL PROPERTIES OF SANDY SOIL UNDER CULTIVATION OF Eucalypus spp.
The study was carried out to evaluate the changes in the physical and chemical properties of a sandy soil after afforestation of an Eucalyptus forest planted in different spacing resulting in several plant population. The initial plant growth was also monitored. It was accomplished an experiment planted with Eucalyptus dunnii Maiden planted on Alfisol (Red Y
Publicado em: 2010
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21. Diet of invertebrates sampled in leaf-bags incubated in a tropical headwater stream
The diet of macroinvertebrates sampled in leaf-bags incubated in a tropical stream was analyzed on a spatial scale (one forested and one deforested area) and on a temporal scale (dry and rainy seasons). The macroinvertebrates were mostly represented by detritivores specialized in fine detritus (69%), followed by generalist detritivores (10% with a diet based
Zoologia (Curitiba). Publicado em: 2009-12
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22. PHOSPHORUS UPTAKE AND USE EFFICIENCY IN POTATO CULTIVATED in vitro / EFICIÊNCIA DE ABSORÇÃO E UTILIZAÇÃO DE FÓSFORO EM BATATA CULTIVADA in vitro
Phosphorus (P) restriction to plants is one of major limiting factors for crop productivity. Alternatively to application of P-containing fertilizer, this obstacle to the vegetal production can be surmounted by developing of efficient plants in P-uptake and use. The objective of this work was to verify if there is behavior difference for Puptake and use effi
Publicado em: 2009
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23. Suprimento de nitrogênio e de potássio e características morfogênicas, nutricionais e produtivas do capim-Marandu / Nitrogen and potassium supply and the morphogenetic, nutritional and productive characteristics of Marandu palisadegrass
Nitrogen and potassium are essentials for plant development, are extracted by plants in high amounts and their availabilities may change the morphogenetic, productive and nutritional characteristics of plants. The objectives of this research were: a) to assess fertilization with nitrogen and potassium rates on morphogenetic and shoot and root dry matter prod
Publicado em: 2009
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24. Estrutura e produtividade da comunidade fitoplanctÃnica de um estuÃrio tropical (SirinhaÃm, Pernambuco, Brasil)
The estuary of SirinhaÃm river located in the district of SirinhaÃm, Southern of Pernambuco state, (8Â34â-8Â37âS e 35Â04â-35Â01âW), was evaluating aiming to catalog the phytoplankton community, estimating its productive capacity, the temporal spatial dynamics and the principal environmental variables that affect its composition. The samplings of th
Publicado em: 2009