The aims of this study were to evaluate the yield and composition of dualpurpose 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 infl uenced 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.
The objective of this study was to assess the growth of annual ryegrass (Lolium multiflorum) cv. BRS Ponteio with different doses of nitrogen applied in the pasture, thereby adjusting their growth to the exponential growth model. A randomized block design was used with five nitrogen application rates (0, 150, 250, 350, and 450 kg N ha-1) and four replicates, applied in installments. Each plot measured 9 m2. On April 15, 2014, 25 kg ha-1 of viable pure seeds of annual ryegrass were sown at a depth of 0.02 m, in 18 rows spaced at 0.17 m in each plot. Growth in the control treatment (zero nitrogen) pasture lasted 167 days with only three cuts, whereas in pastures treated with 350 and 450 kg N ha-1, growth was extended for an additional 45 days with a 333% increase in the number of cuts. The pastures were used for the same duration (188 days) in the treatments with 150 and 250 kg N ha-1, however, increased nitrogen resulted in two additional cuts and a shorter time interval between cuts. The time interval between each cut and the degree-days interacted dynamically causing distinct growth. Growth of the annual ryegrass BRS Ponteio without nitrogen application is poor and cannot be represented even by a first order linear model. The application of nitrogen topdressing, in the form of urea, decreases the time interval between cuts, increases the dry matter production per hectare, stimulates this production, and follows the exponential growth model.
This study analyzed the behavior of the annual ryegrass (Lolium multiflorum) BRS Ponteio and dual-purpose wheat (Triticum aestivum) BRS Tarumã with different doses of ammonium sulfate as topdressing and evaluated the exponential growth model to explain the physiological development of both species. For each species, a completely randomized design was used with four replications per treatment with 9m2 area, in which the following treatments were distributed: 0, 150, 250, 350 and 450 kg nitrogen per hectare applied as ammonium sulfate. The cumulative and adjusted productions to the exponential growth model at the end of the cycle were, respectively: BRS Ponteio 150 = 5,620; 250 = 5,920; 350 = 7,585 and 450 = 8,491 and BRS Tarumã 150 = 3,922; 250 = 5,060; 350 = 7,024 and 450 = 7,491 kg dry matter per hectare. The cultivars analyzed without nitrogen application had limited growth and showed no adjustment even to the first order linear model. The application of nitrogen decreased the interval between cuts and increased dry matter production per hectare following the exponential growth model.
A emergência de saúde mundial expôs a insegurança alimentar que a dependência do trabalho manual impõe à cadeia produtora de proteína animal. Dentre as alternativas que incutem resiliência à produção de alimentos, está a automação. Nesta pesquisa a resiliência é compreendida como a capacidade da cadeia produtora de alimentos em se adaptar a eventos disruptivos, e transcender a ruptura com robustez. Em períodos de escassez de mão-de-obra, tornar automática a tarefa repetitiva libera a mão-de-obra para outras tarefas não automatizadas. O índice de automação na indústria de alimentos em países em desenvolvimento é menor se comparado aos países desenvolvidos. O objetivo deste estudo foi analisar as motivações para adoção de automação na agroindústria de abate de frango, para isto, foram entrevistados gestores de agroindústrias de grande porte no sul do Brasil. Dentre os achados desta pesquisa, a emergência de saúde foi um motivador para adoção de automação de tarefas, assim como, as restrições sanitárias, porém, as incertezas mercadológicas, a retomada lenta da economia e elevados custos dos insumos, bem como, custos extras decorrentes da pandemia, adiaram os planos de automação agroindustrial. Fica evidente que a emergência de saúde causada pela pandemia do Covid-19 instigou a resiliência das agroindústrias e suscitou o sentido de urgência no setor de alimentos para a automação.
O presente estudo tem como objetivo analisar como a riqueza socioemocional familiar influencia os processos de gestão empresarial, sejam eles administrativos ou sucessórios, em uma empresa familiar do noroeste do Rio Grande do Sul, caracterizando-se como descritivo, com abordagem qualitativa, oriundo de um estudo de caso. Aplicou-se a técnica de análise do discurso nas entrevistas realizadas. Os resultados demonstram a importância do estudo do tema para melhor entendimento da aplicação desses aspectos emocionais de forma prática e seu impacto na empresa, como coalizão familiar e participação ativa em todos os processos da empresa, além de valorização do capital social. Observou-se a identificação dos fatores socioemocionais presentes nas relações cotidianas e sua influência positiva junto à empresa, propiciando um ambiente organizacional que remete realmente ao ambiente familiar. A contribuição teórica do estudo consiste na discussão das características da SEW (Riqueza Socioemocional) dentro de uma organização familiar. Esse estudo amplia o debate sobre riqueza socioemocional destacando o fato de que o processo de sucessão aprimora a estrutura da SEW, mas não a perde no caminho da transição das gerações, permitindo à empresa manter sua essência familiar.
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