Soil Water Holding
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Compressibility and water availability in Albaqualf soils under different deployment times in no-tillage
ABSTRACT: The southern Brazilian lowlands have been historically used for flooded rice cultivation. Over time, heavy machinery and intensive tillage practices have resulted in soil structure disruption, soil compaction, higher production costs and lower agricultural profitability. This study aimed to evaluate the effect of different deployment times of no-ti
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-09
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2. Organic Matter Stocks and the Interactions of Humic Substances with Metals in Araucaria Moist Forest Soil with Humic and Histic Horizons
ABSTRACT Soils with humic and histic horizons in tropical and subtropical ecosystems play an important role in determining the atmospheric C stock and its stabilization, climate regulation, water holding capacity, and environmental filtering, due to the different functions of soil organic matter (SOM). However, the processes and mechanisms that regulate SOM
Rev. Bras. Ciênc. Solo. Publicado em: 20/07/2017
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3. Climatic risk zoning for corn and palisade grass (Brachiaria brizantha cv: Marandu) cultivated in integrated crop-livestock systems in São Paulo state, Brazil
Climatic risk zoning allows the identification of areas of low risk of reduced crop productivity due to climatic events. In Brazil, losses to agriculture due to climate are mainly caused by drought. The objective of this research was to determine areas of low climatic risk for corn and palisade grass cultivated in integrated crop-livestock systems in Sao Pau
Revista Brasileira de Zootecnia. Publicado em: 2012-01
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4. Aplicação da trifluralina no controle da intrusão radicular de tubogotejadores enterrados sob lavoura cafeeira / Application of trifluralin in root intrusion control of subsurface drip under coffee
The objective of this research was to investigate effects of different doses and frequency of application of the herbicide Trifluralin to avoid root intrusion in subsurface drip irrigation in a coffee field during its initial development (6 to 18 months). While the space between rows was 2.5 meters, space between plants was 0.5 meters. A completely randomize
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2011
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5. Improvement of properties, and water and clay movement in vertisol-amended sand columns.
Clay amendments may improve agricultural productivity of sandy soils by increasing nutrient-and water-holding capacities. The objective of this research was to determine the effect of Vertisol amendments on infiltration rate, available water capacity, cation exchange capacity, and clay and carbon migration in sandy soil colums. Acid-washed quartz sand was pa
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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6. Study of potential impacts of using sewage sludge in the amendment of desert reclaimed soil on wheat and jews mallow plants
This investigation was conducted to study the impacts of using sewage sludge at different concentrations (0, 10, 25, 50, 75%) in amendment of desert reclaimed soil properties and some physiological aspects in wheat and jews mallow plants. Generally adding sewage sludge to desert soil improved the soil texture, raised the organic matter contents, water holdin
Brazilian Archives of Biology and Technology. Publicado em: 2010-08
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7. Microbial degradation of sulfentrazone in a Brazilian rhodic hapludox soil
Sulfentrazone is amongst the most widely used herbicides for treating the main crops in the State of São Paulo, Brazil, but few studies are available on the biotransformation of this compound in Brazilian soils. Soil samples of Rhodic Hapludox soil were supplemented with sulfentrazone (0.7 µg active ingredient (a.i.) g-1 soil) and maintained at 27ºC. The
Brazilian Journal of Microbiology. Publicado em: 2010-03
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8. Influência da temperatura, umidade e profundidade do solo na persistência do diurom e sulfato de endossulfam em um solo tropical
The influence of temperature (30 and 40 ºC) and soil humidity (20, 50 and 70% of water holding capacity) on the degradation of the herbicide diurom and the endosulfan metabolite, endosulfan sulfate was studied under laboratory conditions, in different soil layers (0-30, 30-38 and 38-83 cm) of an Oxisol (Yellow Latosol) collected in an agricultural area of M
Química Nova. Publicado em: 2010
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9. Classificação climática segundo Köppen e Thornthwaite e caracterização edafoclimática referente à região de Santa Maria, RS / Climatic classification by Köppen and Thornthwaite and edaphoclimatic characterization related to Santa Maria region, State of Rio Grande do Sul, Brazil
The present work was developed with the purpose of analyzing the climatic classification by Köppen and Thornthwaite (comparing the values of soil water holding, actual evapotranspiration, water deficit and water excess for cyclic water balance using monthly data), and of proposing an edaphoclimatic characterization related to the mesoclimatic region of Sant
Publicado em: 2009
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10. A inserção do município de São Lourenço da Serra na Região Metropolitana de São Paulo: um estudo da geração de emprego e renda em uma área de proteção aos mananciais
The objective of this dissertation is to understand the path in the formation of the São Lourenço da Serra municipality, within the establishment of the Metropolitan Region of São Paulo (RMSP), administrative portion of São Paulo state, which binds the municipal. The research initially debates the historical constitution of São Lourenço da Serra, from
Publicado em: 2009
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11. Irrigação, balanço hídrico climatológico e uso eficiente da água na cultura de café / Irrigation, climatological water balance and water efficient use on the coffee crop
Uma das tecnologias mais adotadas pelos produtores, principalmente os que têm suas lavouras situadas em região de cerrado, é a irrigação. No entanto, ainda não existe consenso sobre o manejo dessa irrigação, principalmente, com relação à quantidade de água a aplicar e na freqüência da irrigação. Objetivou-se com este trabalho verificar a infl
Publicado em: 2008
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12. Cinética de degradação microbiológica de torta de filtro no solo na presença de cádmio e níquel. / Filter cake microbiologycal degradation kinetics in soil on the presence of cadmium and nickel.
It was evaluated the effect of doses of nickel and cadmium on the degradation of the organic matter applied to soil by means of filter cake in a respirometry trial. Soil employed was Latossolo Vermelho Amarelo, sampled in the field at depth of 0-20 cm. It were applied doses of 0; 28; 56; 112 and 200 mg kg-1 Cd and 0; 62,5; 125; 250 and 500 mg kg-1 Ni as CdCl
Publicado em: 2005