Buscar
Itens para a visualização no momento 11-20 of 1045
Inoculação com azospirillum brasilense em milho na integração lavoura-pecuária e a relação com as doses de nitrogênio e umidade do solo e ph s em solução
(Universidade Federal de Santa Maria, 2016-08-10)
Continuous use of fertilizer in high concentrations has been raising concerns on environmental pollution associated with the modernization and specialization of agricultural production and livestock systems. With this, ...
Aspectos fisiológios de sementes, produtividade de grãos de trigo submetidos a doses de nitrogênio, inoculação e aplicação foliar de Azospirillum brasilense
(Universidade Federal de Santa Maria, 2016-07-26)
The use of chemical fertilizers as well as providing greater productivity, is costly. The use of bacteria of the genus Azospirillum brasilense represent a potential tool to reduce production costs while improving productive ...
Pisolithus microcarpus e óleo essencial em três espécies nativas em solo contaminado com cobre
(Universidade Federal de Santa Maria, 2014-02-21)
Mining areas and constantly receiving addition of industrial waste are subject to increased levels of copper in the soil. Copper when in high amounts in the soil can adversely affect vegetation preventing the cultivation ...
Resíduos de agroindústrias familiares: Impactos na qualidade da água e tratamento com técnicas simplificadas
(Universidade Federal de Santa Maria, 2010-02-26)
Human activities have altered the environmental quality especially with regard to water sources. The agro-industry activity in small scale may represent a potential pollutant different from those of other agricultural ...
Fungos ectomicorrízicos do sul do Brasil, com ênfase no hábito hipógeo
(Universidade Federal de Santa Maria, 2010-10-29)
Fungi represent an extremely important group of organisms in terrestrial ecosystems. Among their several important ecological roles, is the mutualistic association with
plant roots, forming different types of mycorrhiza. ...
Atributos químicos após dezenove aplicações de dejeto líquido de suínos em argissolo sob plantio direto
(Universidade Federal de Santa Maria, 2010-09-27)
The use of pig slurry as a source of nutrients can affect the conditions of acidity and nutrient availability, altering the environment for crop development. The objective of this study was to evaluate changes in chemical ...
Sistemas de cultivo para a cultura de melancia
(Universidade Federal de Santa Maria, 2010-07-15)
Aiming to evaluate the watermelon crop (Citrullus lanatus L.) in different management systems, on an Ultisol in the Central Depression of RS, Brazil, an experiment was carried out during the agricultural year 2008/2009 ...
Relações físico-hídricas de um latossolo sob plantio direto
(Universidade Federal de Santa Maria, 2010-11-19)
Soil compaction is a process inherent in the no-tillage system and therefore, it will be always observed with varying intensity degrees. However, this system has features which can be maximized in order to reduce the ...
Composição bioquímica e decomposição da parte aérea e raízes de culturas comerciais e plantas de cobertura de solo
(Universidade Federal de Santa Maria, 2010-02-26)
Crop residues (CR) composed by shoots and roots of plants are the main source of C for the agricultural soils. During the decomposition of these CR in the soil, part of C is evolved as CO2 and nutrients are mineralized, ...
Implicações do uso do solo nas propriedades físicohídricas e mecânicas de um argissolo vermelhoamarelo e de um gleissolo háplico
(Universidade Federal de Santa Maria, 2010-07-23)
The Central Depression is an area with sedimentary rocks, presenting a large variety of soils. In highlands Alfisols are found, whereas in lowlands Planosols and Endoaqualf. The morphological, physical and chemical ...