Results 11 to 20 of about 865,702 (313)

Modelo numérico do transporte de nitrogênio no solo. Parte II: Reações biológicas durante a lixiviação Numerical model of nitrogen transport in the soil. Part II: Biological reaction during leaching

Revista Brasileira de Engenharia Agrícola e Ambiental, 2008
Analisar o efeito da temperatura e umidade do solo nos processos de mineralização e nitrificação do nitrogênio e comparar as concentrações de nitrato e amônio, simuladas pelo modelo SIMASS-C, com aquelas obtidas experimentalmente, foi o objetivo que ...
Felizardo A. Rocha, Mauro A. Martinez, Antônio T. Matos, Reinaldo B. Cantarutti, Joseane O. da Silva   +4 more
doaj   +1 more source

Bacterial nitrate assimilation: gene distribution and regulation [PDF]

, 2011
In the context of the global nitrogen cycle, the importance of inorganic nitrate for the nutrition and growth of marine and freshwater autotrophic phytoplankton has long been recognized.
Andrew J. Gates, Assumpção, Caballero, Cabello, Chai, Chen, Conrado Moreno-Vivián, David J. Richardson, Flores, Forchhammer, Forchhammer, Gates, Gutierrez, Ishida, Kayumov, Koropatkin, Leigh, Li, Lin, Lledó, Llácer, M. Dolores Roldán, Moreno-Vivián, Nakano, Ogawa, Ohashi, Pawlowski, Paz-Yepes, Pino, Puerta-Fernández, Ramos, Richardson, Sanders, Shao, Shu, Shu, Stuart J. Ferguson, Swanson, Szeto, Toukdarian, Víctor M. Luque-Almagro, Weiss, Weiss, Wray, Wu   +44 more
core   +1 more source

Transporte de NO3- e NH4+ em agregados de Latossolo Vermelho com e sem atividade biológica NO3- and NH4+ transport in a typic Haplortox aggregates with and without biological activity

Revista Brasileira de Engenharia Agrícola e Ambiental, 2007
Objetivou-se, com este trabalho, avaliar a influência do tamanho dos agregados de um Latossolo Vermelho distrófico sobre as transformações e transporte do amônio e do nitrato em condições de presença e ausência de atividade biológica.
Fábio C. Coelho, Hugo A. Ruiz, Reinaldo B. Cantarutti, Gonçalo E. França   +3 more
doaj   +1 more source

Diurnal Patterns in Solute Concentrations Measured with In Situ UV-Vis Sensors: Natural Fluctuations or Artefacts?

Sensors, 2020
In situ spectrophotometers measuring in the UV-visible spectrum are increasingly used to collect high-resolution data on stream water quality. This provides the opportunity to investigate short-term solute dynamics, including diurnal cycling.
Suzanne R. Jacobs, Björn Weeser, Mariana C. Rufino, Lutz Breuer   +3 more
doaj   +1 more source

Differential Metabolic Responses of Lettuce Grown in Soil, Substrate and Hydroponic Cultivation Systems under NH₄⁺/NO₃⁻ Application

Metabolites, 2022
Nitrogen (N) is an essential element for plant growth and development. The application of a balanced and optimal amount of N is required for sustainable plant yield.
Muhammad Khalid Hameed, Wajid Umar, Ali Razzaq, Tariq Aziz, Muhammad Aamer Maqsood, Shiwei Wei, Qingliang Niu, Danfeng Huang, Liying Chang   +8 more
doaj   +1 more source

Modelo numérico do transporte de nitrogênio no solo. Parte I: Desenvolvimento e teste do modelo Numerical model of nitrogen transport in the soil. Part I: Model development and test

Revista Brasileira de Engenharia Agrícola e Ambiental, 2008
Este trabalho visa realizar modificações no modelo de transporte de soluto no solo SIMASS-C, permitindo-lhe simular as concentrações do nitrato e amônio no solo, considerando-se as transformações biológicas e o efeito da temperatura e do teor de água do ...
Felizardo A. Rocha, Mauro A. Martinez, Antônio T. Matos, Reinaldo B. Cantarutti, Joseane O. da Silva   +4 more
doaj   +1 more source

Investigation of the Sugarcane Bagasse Adsorbent Efficiency For Nitrate Removal from Agricultural Outflow Drainage [PDF]

علوم و مهندسی آبیاری, 2017
Nitrate is a non-concentrated source of environmental pollution caused by fertilizer overdose in agricultural wastewater. These poisonous compounds are accumulated in aquatics tissues specially fishes and affect their reproduction and procreation ability.
Milad Hashemi, Abed Ali Naseri, Afshin Takdastan   +2 more
doaj   +1 more source

Increased Arctic NO₃⁻ Availability as a Hydrogeomorphic Consequence of Permafrost Degradation and Landscape Drying

Nitrogen, 2022
Climate-driven permafrost thaw alters the strongly coupled carbon and nitrogen cycles within the Arctic tundra, influencing the availability of limiting nutrients including nitrate (NO3−).
Carli A. Arendt, Jeffrey M. Heikoop, Brent D. Newman, Cathy J. Wilson, Haruko Wainwright, Jitendra Kumar, Christian G. Andersen, Nathan A. Wales, Baptiste Dafflon, Jessica Cherry, Stan D. Wullschleger   +10 more
doaj   +1 more source

Organik Salata-Marul Yetiştiriciliğinde Agryl Örtü ve Bazı Gübrelerin Verim, Kalite, Yaprak Besin Madde İçeriği ve Toprak Verimliliği Özelliklerine Etkileri

Journal of Agricultural Sciences, 2011
Bu çalışma, Ege Üniversitesi Ziraat Fakültesi Bahçe Bitkileri Bölümü’ne ait organik tarım arazisinde 2005-2006 yıllarında yürütülmüştür. Agryl örtü altında (A+) ve açıkta yetiştirilen (A-) Yedikule marul çeşidi ile kıvırcık yapraklı Arapsaçı salata ...
Dilek Anaç, Dursun Eşiyok, Gölgen Öztekin, Hale Duyar, Hüseyin Kayıkçıoğlu, Özlem Gürbüz Kılıç, Yüksel Tüzel   +6 more
doaj   +1 more source

Nitrate and phosphate availability and distribution have different effects on root system architecture of Arabidopsis [PDF]

, 2002
Plant root systems can respond to nutrient availability and distribution by changing the three-dimensional deployment of their roots: their root system architecture (RSA). We have compared RSA in homogeneous and heterogeneous nitrate and phosphate supply
Fitter, A H, Leyser, H M O, Linkohr, B I, Williamson, L C   +3 more
core   +1 more source