Adubação nitrogenada e cortes a intervalos fixos em três cultivares de aveia branca
In southern Brazil where the climate is subtropical with mild temperatures and frequent frosts during the winter, there are demands for forage that is productive of good nutritional quality and to adapt to climate conditions of the region. For this reason, the use of cultivated pastures cold season...
| Autor principal: | Militão, Érica Rui |
|---|---|
| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/11368 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: |
In southern Brazil where the climate is subtropical with mild temperatures and frequent frosts during the winter, there are demands for forage that is productive of good nutritional quality and to adapt to climate conditions of the region. For this reason, the use of cultivated pastures cold season is an alternative to reduce the critical period of the production of tropical forages. Fieldwork was conducted at the Federal Technological University of Paraná - Campus Dois Vizinhos, UNEP (Teaching and Research Unit) Annual Crops in the period April to September 2013. The experimental area consisted of 09 plots of 24 m² (3x8 m), divided into three blocks, with spacing of 0.5 m plots with a total area of 216 m². We evaluated the Avena sativa L., varieties IPR126, Guapa and URS URS Taura, wishing to compare them as variables related to growth and biomass production development, to recommend as possible roughage feed on pasture. After implantation, we performed cutting standardization to reach approximately 25 cm in height, and subsequent sections were performed every 21 days, keeping time to regrowth of 10 cm above ground. Were subdivided into areas of 6 m², which received doses of 0, 60, 120 and 240 kg N ha-1. We evaluated and quantified the rate of assimilation and intracellular concentration of CO2, photosynthetic rate, chlorophyll content, leaf/stem ratio, number of tillers/plant, number of leaves/tiller, leaf area and biomass production. The oat cultivars showed differential accumulation of biomass according to the times of cutting and nitrogen fertilization did not influence plant development. |
|---|