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Itens para a visualização no momento 11-20 of 30
Mineralogia e liberação de potássio em solos de várzea do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2010-04-09)
The cultivation of flooded rice in Rio Grande do Sul (RS) does not always respond to potassium (K) fertilization, even when the availability is considered low or medium. Other K forms not estimated by the method of analysis ...
Alterações fisiológicas e bioquímicas em plantas cultivadas em solos com acúmulo de cobre e zinco
(Universidade Federal de Santa Maria, 2010-11-26)
Soil pollution by heavy metals such as copper (Cu) and zinc (Zn) has deserved special attention as it may represent risks to the quality of the environment. In Brazil particularly in the state of Rio Grande do Sul, the ...
Diagnóstico e recuperação da mata ciliar da Sanga Lagoão do ouro na microbacia hidrográfica do Vacacaí-Mirim, Santa Maria - RS
(Universidade Federal de Santa Maria, 2010-11-12)
The intensive and disordered use of the soil has been taking many ecosystems to the degradation,
besides the ciliary ones that, in spite of they be considered by the legislation as Permanent
Preservation Areas, they have ...
Liberação de nitrogênio em diferentes solos e épocas de cultivo sob adubação orgânica
(Universidade Federal de Santa Maria, 2010-04-30)
Organic fertilizers promote improvements in soil properties and are important in providing balanced nutrients to plants. The officials parameters adopted by the Commission of Chemistry and Soil Physics in the States of Rio ...
Estrutura e água em argissolo sob distintos preparos na cultura do milho
(Universidade Federal de Santa Maria, 2010-10-15)
The retention and availability of water in the soil are controlled by soil structure and its temporal variation is associated with the weather and the crops needs. Water also controls the aeration and soil penetration ...
Qualidade da matéria orgânica e disponibilidade de cobre em solos de áreas de videira
(Universidade Federal de Santa Maria, 2010-03-29)
In Brazil, the grape is produced in several regions, but in the South that the culture of the vine
has great economic importance because it has suitable climatic conditions for growing this species.
The application continues ...
Cianobactérias heterocitadas e euglenas vermelhas em lavoura de arroz irrigado por inundação em planossolo háplico, Santa Maria, RS
(Universidade Federal de Santa Maria, 2010-08-30)
Oxyreduction reactions resulting from the soil flood promote lighest availability of nutrients from fertilizer application, soil solution. Although the management of drainage, necessary to improve plant establishment ...
Utilização do lodo de esgoto na vermicompostagem e como substrato para a produção de mudas de Pinus elliottii Engelm
(Universidade Federal de Santa Maria, 2010-02-24)
The urban population growth causes an increase in solid and liquid waste quantity produced by man. A viable alternative to use of these wastes would be its application in agricultural sector. The sewage sludge can fall as ...
Plantas de cobertura de solo consorciadas e em cultivo solteiro: Decomposição e fornecimento de nitrogênio ao milho
(Universidade Federal de Santa Maria, 2010-02-26)
No-tillage system is a soil management practice which predominates in the agricultural fields of Rio Grande do Sul Plateau. For its success, is essential the permanent vegetal soil cover maintenance and an adequate crop ...
Injeção de dejetos líquidos de suínos no solo e inibidor de nitrificação como estratégias para reduzir as emissões de amônia e óxido nitroso
(Universidade Federal de Santa Maria, 2010-06-30)
Injection of pig slurry (PS) into the soil and the addition of nitrification inhibitors have
been used in some countries as a strategy for manure nitrogen (N) preservation and
mitigation of its pollution potential. The ...