Revista: | Anais da Academia Brasileira de Ciencias |
Base de datos: | PERIÓDICA |
Número de sistema: | 000435918 |
ISSN: | 0001-3765 |
Autores: | Timm, Luiz Carlos1 Haygert Velho, Ione Maria P2 Bolke, Delvacir R3 Alessio, Dileta Regina M4 Busanello, Marcos5 Sicheski, Sirineu José1 Gehrke, Cássio Rodrigo6 Velho, Joao Pedro2 |
Instituciones: | 1Universidade Federal de Santa Maria, Programa de Pos-graduacao em Agronegocios, Palmeira das Missoes, Rio Grande do Sul. Brasil 2Universidade Federal de Santa Maria, Departamento de Zootecnia e Ciencias Biologicas, Palmeira das Missoes, Rio Grande do Sul. Brasil 3Instituto Federal de Educacao, Ciencia e Tecnologia Sul-Rio-Grandense, Ciencia e Tecnologia Sul-Rio-Grandense, Pelotas, Rio Grande do Sul. Brasil 4Centro Universitario Leonardo da Vinci, Nucleo de Educacao a Distancia, Indaial, Santa Catarina. Brasil 5Universidade de Sao Paulo, Departamento de Zootecnia, Piracicaba, Sao Paulo. Brasil 6Universidade Federal de Santa Maria, Curso de Zootecnia, Palmeira das Missoes, Rio Grande do Sul. Brasil |
Año: | 2020 |
Volumen: | 92 |
Número: | 3 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Artículo |
Enfoque: | Aplicado, descriptivo |
Resumen en inglés | The aims of this study were to evaluate the yield and composition of dual-purpose wheat pasture BRS Tarumã managed with various urea nitrogen (N) doses and validate an exponential model and compare nutrient production costs. The completely randomized design had four replications per treatment (0, 150, 250, 350, and 450 kg N ha-1). For the 350 and 450 kg ha-1 treatments, the cycle was 212 d whereas that of the control was 167 d. The control accumulated 1,771 kg ha-1 dry matter. In contrast, the 450 kg ha-1 treatment accumulated 7,011 kg ha-1 DM. Topdressing nitrogen (150, 250, 350, and 450 kg ha-1) increased the traditional average daily accumulation rate by 586% relative to the control. However, the degree-days method determined a daily accumulation rate 652% higher than the control. The levels of dry matter and other nutrients in BRS Tarumã wheat pasture were influenced by the doses of nitrogen in the topdressing under the same environmental conditions (temperature and rainfall). An exponential model explained the dynamics of nutrient accumulation and was based on the thermal sum of each nitrogen dose impacting the cost per kilogram of pasture produced |
Disciplinas: | Agrociencias |
Palabras clave: | Gramíneas, Fertilización, Nutrientes minerales, Urea, Composición química, Suma térmica, Rendimiento, Triticum aestivum |
Keyword: | Gramineae, Fertilization, Mineral nutrients, Urea, Chemical composition, Thermal sum, Yield, Triticum aestivum |
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