Copper phytoextraction and phytostabilization by Brachiaria decumbens Stapf. in vineyard soils and a copper mining waste.

Brachiaria decumbens is a high biomass plant with great potential for phytoremediation of copper-polluted soils. The current study aimed to evaluate B. decumbens plants for phytoextraction and phytostabilization use in two different copper contaminated vineyard soils and a copper mining waste. Also, the macro and micronutrients uptake were evalu- ated after plants growth in copper contaminated soils. B. decumbens was cultivated in two vineyard soils (Inceptisol and Mollisol) and a copper mining waste for 47 days of growth in greenhouse. Then, B. decumbens?s nutrient uptake was evaluated, and it?s potential application in phytoremediation techniques for the phytoextraction and phytostabilization of copper contamination. B. decumbens exhibited high levels of biomass production at contaminated soils and no negative effect on macronutrients uptake was found. Copper contaminated soils affected micronutrients uptake by Brachiaria plants. This Brachiaria specie showed high potential on copper phytoextraction with accumulation of copper concentra- tions in the shoots and roots of 70 and 585 mg·kg?1 of dry mass, respectively, in the vineyard Inceptisol soil, after 47 days of growth. Mollisol soil and copper mining waste also exhibited high copper concentration in the biomass in the entire plant with 371 and 466 mg·kg?1, respectively. Although Brachiaria exhibited low levels of translocation factor for copper, this specie showed high potential for copper phytoextraction on Inceptisol, Mollisol and copper mining waste with 1900, 1156 and 1363 g·ha?1 of copper, respectively. In summary, B. decumbens plants showed high potential for copper phytoextraction and phytostabilization of copper on contaminated vineyard soils and copper mining waste

Producao e manejo de frangos de corte.

Escolha do pinto; Cama para aviario; Circulo de protecao; Recebimento dos pintos no balcao; Aquecimento; Manejo das cortinas; Iluminacao; VBebedouros; Agua; Comedouros; Edificacoes para frangos de corte; Alimentacao; Criacao com separacao de sexo; Avaliacao de desempenho do lote; Sanidade.bitstream/item/58448/1/doc28.pd

Biocontrole da antracnose pós-colheita do mamão com levedura killer.

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Influencia do Tempo de Alimentacao e de Niveis de Proteina em Frangos de Corte.

Foi realizado um experimento com frangos de corte, com o objetivo de verificar o efeito de diferentes niveis de proteina em tres horarios de alimentacao. Verificou-se o ganho de peso, (GP), consumo de racao (CR), conversao alimentar (CA), peso da carcaça (PC), rendimento de carcaaa (RC) e gordura abdominal (GA). Utilizaram-se racoes isocaloricas (3.100 kcal/EM) a base de milho e farelo de soja, com 23, 22, 21, 20 e 19% de proteina bruta (PB) no periodo de 1 a 28 dias; e 21, 20, 19, 18 e 17% de PB de 29 a 49 dias; as aves foram arracoadas da seguinte maneira: 20 minutos de alimento a vontade a cada intervalo de 1:30, 3:00 e 4:30 horas; uma racao-testemunha a vontade e tres repeticoes por tratamento. As analises estatisticas mostraram que houve diferenca significativa (P<0,05) entre horarios de alimentacao sobre o desempenho, para todas as variaveis, exceto RC e PC. Alimentacao a vontade apresentou melhor GP, porem pior CA. Nao houve efeito de interacao entre niveis de proteina e intervalo de horario de alimentacao

Copper phytoextraction and phytostabilization by Brachiaria decumbens Stapf. in vineyard soils and a copper mining waste.

Brachiaria decumbens is a high biomass plant with great potential for phytoremediation of copper-polluted soils. The current study aimed to evaluate B. decumbens plants for phytoextraction and phytostabilization use in two different copper contaminated vineyard soils and a copper mining waste. Also, the macro and micronutrients uptake were evalu- ated after plants growth in copper contaminated soils. B. decumbens was cultivated in two vineyard soils (Inceptisol and Mollisol) and a copper mining waste for 47 days of growth in greenhouse. Then, B. decumbens?s nutrient uptake was evaluated, and it?s potential application in phytoremediation techniques for the phytoextraction and phytostabilization of copper contamination. B. decumbens exhibited high levels of biomass production at contaminated soils and no negative effect on macronutrients uptake was found. Copper contaminated soils affected micronutrients uptake by Brachiaria plants. This Brachiaria specie showed high potential on copper phytoextraction with accumulation of copper concentra- tions in the shoots and roots of 70 and 585 mg·kg?1 of dry mass, respectively, in the vineyard Inceptisol soil, after 47 days of growth. Mollisol soil and copper mining waste also exhibited high copper concentration in the biomass in the entire plant with 371 and 466 mg·kg?1, respectively. Although Brachiaria exhibited low levels of translocation factor for copper, this specie showed high potential for copper phytoextraction on Inceptisol, Mollisol and copper mining waste with 1900, 1156 and 1363 g·ha?1 of copper, respectively. In summary, B. decumbens plants showed high potential for copper phytoextraction and phytostabilization of copper on contaminated vineyard soils and copper mining waste.201