Buscar
Itens para a visualização no momento 1-10 of 100
Modelagem de processos erosivos em uma bacia agrícola: limitações e possibilidades
(Universidade Federal de Santa Maria, 2017-03-01)
The growing demand for modeling tools able represent erosive processes in catchments, and their connections, requires that mathematical modelling be associated with monitoring. This doctoral thesis sought to contribute to ...
Interações dinâmicas no crescimento de tungue e cana-de-açúcar em sistemas agroflorestais
(Universidade Federal de Santa Maria, 2017-06-30)
The aim of the study was to evaluate the influence of meteorological variables on the growth of Tungue and its implications on the growth and productivity of sugarcane in agroforestry systems. The research was conducted ...
Caracterização morfológica e agressividade de populações de Pratylenchus spp. provenientes de cana-de-açúcar e manejo de fitonematoides na cultura pelo emprego de rizobactérias
(Universidade Federal de Santa Maria, 2017-03-31)
Sugarcane is among the crops most affected by the presence of phytonematoids, with large losses in productivity observed each year. In view of this problem, the objective of this work was to characterize the nematode ...
Manejo do solo e plantas de cobertura de inverno para o cultivo da soja em área de arroz irrigado
(Universidade Federal de Santa Maria, 2017-02-23)
In Rio Grande do Sul state, the Alfisols areas are predominantly cultivated with irrigated rice, however, the monoculture of rice can complicate the use of these areas for rice crop. An alternative to this is the use of ...
Toxidez por cobre: reflexos na qualidade de sementes e no desenvolvimento inicial de aveia preta
(Universidade Federal de Santa Maria, 2017-02-24)
in the soill elevated over the years through anthropogenic actions such as the application of
manure and cupping fungicides. As a reflection of these increases the establishment and
development of plants grown in these ...
Cultivo de mandioca no Rio Grande do Sul sob influência do fenômeno ENOS utilizando o modelo Simanihot
(Universidade Federal de Santa Maria, 2017-03-03)
The objective of this study was to evaluate the effect of planting date on productivity in the cassava crop for the state of Rio Grande do Sul using the Simanihot model, when considering the influence of the ENSO phenomenon. ...
Manejo de brusone em arroz irrigado e sensibilidade micelial de isolados à diferentes fungicidas
(Universidade Federal de Santa Maria, 2017-02-24)
The blast rice, caused of fungus Pyricularia oryzae is the most important rice crop disease and can cause up to 100% crop damage. The cultural, varietal and chemical management at the field level and the monitoring and ...
Echium plantagineum L. (boraginaceae): superação da dormência, respostas à temperaturas, luz e profundidades de semeadura
(Universidade Federal de Santa Maria, 2017-02-24)
Echium plantagineum is considered an annual invasive ruderal plant, possibly biennial, originating in the Mediterranean region and Western Europe, of easy adaptation, with up to 1,5 m of height, reproduced by seeds, and ...
Amostragem sequencial para avaliação de lagartas e percevejos em soja
(Universidade Federal de Santa Maria, 2017-02-16)
Among the principal limitations of grain yield in soybean are the insect pests, especially the defoliating caterpillars and Sucking stink bugs grains. It is necessary to reveal and quantify these insects for proper ...
Tamanho de amostra para caracteres morfológicos e produtivos de centeio
(Universidade Federal de Santa Maria, 2017-12-15)
The objective of this study was to determine the sample size for morphological and productive characteristics of the rye crop, as a function of sowing times and cultivars. Uniformity trials with two rye cultivars and five ...