Produção e composição química da Brachiaria brizantha cv. Marandu adubada com água residuária de suinocultura
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Data
2010-07-12
Autores
Serafim, Renata Soares [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
No presente trabalho objetivou-se avaliar o efeito da aplicação de diferentes doses de água residuária de suinocultura na produção e composição química da Brachiaria brizantha cv. Marandu, no período de 12 de fevereiro de 2008 a 29 de abril de 2009. Os tratamentos consistiram de: tratamento 1 = testemunha (0 m³ de água residuária de suinocultura ha-1); tratamento 2 = 100 m³ ha-1; tratamento 3 = 200 m³ ha-1; tratamento 4 = 300 m³ ha-1 e tratamento 5 = 600 m³ ha-1. As adubações foram divididas em oito aplicações, a cada 60 dias e o corte da forragem realizou-se quando a mesma atingia altura de 30 cm. O delineamento experimental foi o de blocos completos casualizados, com quatro repetições e cinco tratamentos, em esquema de parcelas subdivididas no tempo. As médias foram comparadas pelo programa “SISVAR” e o teste utilizado foi o de Tukey. O experimento consistiu na avaliação do terceiro ano da aplicação de água residuária de suinocultura na Brachiaria brizantha cv. Marandu, e iniciou-se em fevereiro de 2008 com o corte de uniformização das parcelas e a primeira aplicação de água residuária de suinocultura. Os parâmetros avaliados foram: produção de massa seca (kg MS ha-1), forragem acumulada (kg MS ha-1 ano-1), taxa de acúmulo de forragem (kg MS ha-1 dia-1), teores médios de massa seca, proteína bruta, fibra em detergente neutro, fibra em detergente ácido, hemicelulose, cálcio, fósforo, magnésio e potássio. Foram observadas interações entre as doses de água residuária de suinocultura e os cortes em todos os parâmetros avaliados. Quanto à produção de massa seca, as doses de 300 e 600 m³ apresentaram os maiores valores e diferiram-se das demais (P<0,05). A taxa de acúmulo de forragem foi influenciada pela produção de forragem acumulada, e apresentou o mesmo comportamento, sendo superior nas doses de 300 e 600 m³...
In the present study aimed to evaluate the effect of different quantities of swine wastewater in the production and chemical composition of Brachiaria brizantha cv. Marandu, from February 12, 2008 to April 29, 2009. The treatments were: treatment 1 = control (0 m³ of swine wastewater ha-1); treatment 2 = 100 m³ ha-1; treatment 3 = 200 m³ ha-1; treatment 4 = 300 m³ ha-1 and treatment 5 = 600 m³ ha-1. Fertilization was divided into eight applications every 60 days and cut the grass held up when it reached a height of 30 cm. The experimental design was a randomized complete block with four replications and five treatments in a split plot in time. Means were compared by SISVAR and the test used was Tukey. The experiment consisted in evaluating the third year of application of swine wastewaster in Brachiaria brizantha cv. Marandu, and began in February 2008 with the unification of cutting portions and the first swine wastewater application. The parameters evaluated were: dry matter production (kg DM ha-1), accumulated forage (kg DM ha-1 yr-1), rate of forage accumulation (kg DM ha-1 day-1), mean levels dry matter, crude protein, neutral detergent fiber, acid detergent fiber and hemicellulose, calcium, phosphorus, magnesium and potassium. Interactions were observed between the levels of swine wastewater and cuts across all parameters. The production of dry weight, the quantities of 300 and 600 m³ showed the highest values and differed from the others (P <0.05). The rate of forage accumulation was influenced by forage production and accumulated had the same pattern, with higher quantities of 300 and 600 m³. The average content of crude protein were higher (P <0.05) at quantities of 300 and 600 m³ when compared to the control, indicating proportional increase in function of quantities. The lowest NDF and ADF were obtained with the application of the highest dose of swine wastewater... (Complete abstract click electronic access below)
In the present study aimed to evaluate the effect of different quantities of swine wastewater in the production and chemical composition of Brachiaria brizantha cv. Marandu, from February 12, 2008 to April 29, 2009. The treatments were: treatment 1 = control (0 m³ of swine wastewater ha-1); treatment 2 = 100 m³ ha-1; treatment 3 = 200 m³ ha-1; treatment 4 = 300 m³ ha-1 and treatment 5 = 600 m³ ha-1. Fertilization was divided into eight applications every 60 days and cut the grass held up when it reached a height of 30 cm. The experimental design was a randomized complete block with four replications and five treatments in a split plot in time. Means were compared by SISVAR and the test used was Tukey. The experiment consisted in evaluating the third year of application of swine wastewaster in Brachiaria brizantha cv. Marandu, and began in February 2008 with the unification of cutting portions and the first swine wastewater application. The parameters evaluated were: dry matter production (kg DM ha-1), accumulated forage (kg DM ha-1 yr-1), rate of forage accumulation (kg DM ha-1 day-1), mean levels dry matter, crude protein, neutral detergent fiber, acid detergent fiber and hemicellulose, calcium, phosphorus, magnesium and potassium. Interactions were observed between the levels of swine wastewater and cuts across all parameters. The production of dry weight, the quantities of 300 and 600 m³ showed the highest values and differed from the others (P <0.05). The rate of forage accumulation was influenced by forage production and accumulated had the same pattern, with higher quantities of 300 and 600 m³. The average content of crude protein were higher (P <0.05) at quantities of 300 and 600 m³ when compared to the control, indicating proportional increase in function of quantities. The lowest NDF and ADF were obtained with the application of the highest dose of swine wastewater... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Biofertilizantes, Forragem, Composição bromatológica, Minerais, Taxa de acúmulo, Biofertilizer, Forage, Chemical composition, Mineral, Rate of accumulation
Como citar
SERAFIM, Renata Soares. Produção e composição química da Brachiaria brizantha cv. Marandu adubada com água residuária de suinocultura. 2010. vi, 89 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2010.