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Sistema radicular de seis gramíneas irrigadas em diferentes adubações nitrogenadas e manejos - DOI: 10.4025/actasciagron.v32i2.1020
Provedor de dados: 1
Autores: Cunha, Fernando França da; Universidade Federal de Viçosa; Ramos, Márcio Mota; Universidade Federal de Viçosa; Alencar, Carlos Augusto Brasileiro de; Universidade Vale do Rio Doce; Martins, Carlos Eugênio; Empresa Brasileira de Pesquisa Agropecuária; Cóser, Antônio Carlos; Empresa Brasileira de Pesquisa Agropecuária; Oliveira, Rubens Alves de; Universidade Federal de Viçosa.
Objetivou-se avaliar a densidade de raiz e a profundidade efetiva do sistema radicular de seis gramíneas irrigadas sob efeito de diferentes adubações nitrogenadas e manejos. O experimento foi analisado em esquema de parcelas sub-subdivididas, tendo nas parcelas os manejos (pastejo e corte), nas subparpelas as gramíneas (Estrela, Marandu, Mombaça, Pioneiro, Tanzânia e Xaraés) e nas sub-subparcelas as doses nitrogenadas (100, 300, 500 e 700 kg ha-1 ano-1). A densidade de raiz foi obtida pela densidade média de todas as amostras, e a profundidade efetiva foi definida na profundidade onde se concentravam 80% de peso das raízes. Observou-se efeito das gramíneas, adubação nitrogenada e manejos nas características avaliadas. O capim-Marandu, seguido do Xaraés,...
Palavras-chave: 5.04.04.00-8; 5.03.02.01-9; 5.01.01.05-6 profundidade efetiva; Densidade de raiz; B. brizantha; P. maximum; P. purpureum; C. nlemfuensis Pastagem e Forragicultura; Irrigação e Drenagem; Fertilidade do Solo e Adubação root depth; Root density; B. brizantha; P. maximum; P. purpureum; C. nlemfuensis.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1020

Nitrogen and carbohydrate fractions in exclusive Tifton 85 and in pasture oversown with annual winter forage species - 10.4025/actascianimsci.v34i1.11428
Provedor de dados: 2
Autores: Moreira, Andréia Luciane; Pólo Alta Sorocabana/APTA; Reis, Ricardo Andrade; Faculdade De Ciências Agrárias e Veterinárias (UNESP); Simili, Flávia Fernanda; Pólo Centro Leste (APTA); Gomide, Carlos Augusto de Miranda; Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA); Ruggieri, Ana Claudia; Faculdade De Ciências Agrárias e Veterinárias (UNESP); Berchielli, Telma Terezinha; Faculdade De Ciências Agrárias e Veterinárias (UNESP).
The experiment was undertaken at the Faculty of Agrarian and Veterinary Sciences (FCAV) Jaboticabal, São Paulo State, Brazil, during winter-spring-summer of 2001-2002, to determine the fractionation of nitrogen and carbohydrates in Tifton 85 (Cynodon dactylon Vanderyst x Cynodon nlemfuensis (L.) Pers), exclusively or oversown with winter annual forage species. Treatments comprised bristle oat (Avena strigosa Schreb), yellow oat (Avena byzantina C. Koch), triticale (X Triticosecale Wittmack), bristle oat + yellow oat, bristle oat + triticale, yellow oat + triticale, bristle oat + yellow oat + triticale seeded in Tifton 85 and sole crop (control). Experimental design was composed of completely randomized blocks with three replications. Fodder was cut 20 cm...
Tipo: Pesquisa de campo; análise laboratorial
Palavras-chave: 5.04.04.00-8; 5.07.01.01-0 Avena sp.; Cynodon sp.; Grassland management tillage triticale.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11428

Tillering dynamics of Tanzania guinea grass under nitrogen levels and plant densities - doi: 10.4025/actascianimsci.v34i4.13382
Provedor de dados: 2
Autores: Braz, Thiago Gomes dos Santos; Universidade Federal de Viçosa; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Freitas, Fabrício Paiva de; Universidade Federal de Viçosa; Martuscello, Janaina Azevedo; Universidade Federal de São João del-Rei; Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlândia; Santos, Márcia Vitória; Universidade Federal Rural da Amazônia.
This study evaluated the influence of nitrogen levels (N) and plant density (D) on the tillering dynamics of Tanzania guinea grass (Panicum maximum Jacq.). Treatments were arranged in a completely randomized block design with 12 treatments and two replicates in a factorial scheme (4 × 3) with four levels of N (0, 80, 160 or 320 kg ha-1 N) and three plant densities (9, 25, and 49 plant m-²). Higher number of tillers was observed in the treatment with 9 plants m-² and under higher levels of N, especially in the second and third generations. Still, the N influenced quadratically the appearance rate of basal and total tillers, which were also affected by plant density and interaction N × D. However, the appearance rate of aerial tiller was not influenced by...
Tipo: Pesquisa de campo
Palavras-chave: 5.04.04.00-8; 5.04.04.01-6 light interception; Panicum maximum; Tiller; Appearance rate; Mortality rate.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13382

Determining a model to estimate leaf area in Pornunça (Manihot sp.) using morphometric measures
Provedor de dados: 2
Autores: Silva, Guilherme de Lira Sobral; Carneiro, Maria Socorro de Souza; Edvan, Ricardo Loiola; Andrade, Alberício Pereira de; Medeiros, Geovergue Rodrigues de; Cândido, Magno José Duarte.
 Pornunça is a species of the genus Manihot that has been cultivated as an option for animal feeding in the Brazilian semi-arid. Leaf area (LA) is important to determine forage plant growth, whose evaluation model has to meet the following characteristics: practicality, precision and low cost. The objective of this study was to set a model to determine the leaf area in Pornunça (Manihot sp.) from morphometric measurements of the leaf. The experimental design was in randomized blocks with three methods for determination of leaf area, and three blocks, with 144 replicates (leaves). For the determination of LA, the direct method (FAReal), treadmill leaf area meter (Li-Color 3100©) and linear dimensions were used. Data were subjected to regression analysis....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2; 5.04.04.00-8; 5.04.04.01-6 cgrowth; Plant; Morphology; Semiarid.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36447

Agronomic characteristics of forage sorghum cultivars for silage production in the lower middle San Francisco Valley - doi: 10.4025/actascianimsci.v35i1.13072
Provedor de dados: 2
Autores: Santos, Rafael Dantas dos; Empresa Brasileira de Pesquisa Agropecuária (Embrapa Semiárido); Pereira, Luiz Gustavo Ribeiro; Empresa Brasileira de Pesquisa Agropecuária (Gado de Leite); Neves, André Luis Alves; Empresa Brasileira de Pesquisa Agropecuária (Gado de Leite); Rodrigues, José Avelino Santos; Empresa Brasileira de Pesquisa Agropecuária (Milho e Sorgo); Costa, Cleber Thiago Ferreira; Universidade Federal Rural de Pernambuco; Oliveira, Getúlio Figueiredo de; Universidade Federal de Sergipe.
Productive performance for silage production of five forage sorghum genotypes (BRS Ponta Negra, BRS 655, BR 601, BRS 506 and BRS 610) was evaluated through the yield of dry matter, digestible dry matter, and fresh matter, plant height, percentage of lodged and broken plants, and anatomical fractions in Brazilian semi-arid region. BRS 506 and BRS Ponta Negra varieties achieved the highest fresh forage yields (89.4 and 76.2 ton. ha-1), and BRS 506, stood out for dry and digestible dry matter yield (25.2 and 12.1 ton. ha-1, respectively). Regarding the participation of the plant fractions, BRS 655 and BRS 610 genotypes showed a higher percentage of panicles (50.2 and 41.0% respectively), while BRS 506 stressed out the stem participation (84.6%), and BRS Ponta...
Tipo: Pesquisa de campo
Palavras-chave: 5.04.04.00-8; 5.04.04.01-6; 5.04.05.00-4 fforage; Dry matter; Nutrition; Ruminants; Sorghum bicolor (L.) Moench.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13072

Características agronômicas de variedades de milho para produção de silagem - doi: 10.4025/actascianimsci.v32i4.9299
Provedor de dados: 2
Autores: Santos, Rafael Dantas dos; Embrapa; Pereira, Luiz Gustavo Ribeiro; Embrapa; Neves, André Luis Alves; Embrapa; Azevêdo, José Augusto Gomes; Universidade Estadual de Santa Cruz; Moraes, Salete Alves de; Embrapa; Costa, Cleber Thiago Ferreira; UNIVASF.
O objetivo deste trabalho foi avaliar a produtividade de massa seca e massa verde, altura de inserção da espiga, número de espigas por planta, altura das plantas e a relação espiga, colmo e folha de seis variedades de milho indicadas para a região semiárida brasileira (BR 5033 - Asa Branca, BR 5028 - São Francisco, BRS 4103, BRS Caatingueiro, BRS Assum Preto e Gurutuba), visando à produção de silagem. O experimento foi conduzido nas dependências da Embrapa Semiárido, adotando-se o delineamento experimental de blocos casualizados com seis tratamentos e quatro repetições. As variedades Gurutuba e BRS 4103 obtiveram as maiores produtividades de massa verde (38,7 e 40,0 t ha-1). Do mesmo modo, essas duas variedades e a BR 5028 - São Francisco se destacaram...
Tipo: Pesquisa de campo
Palavras-chave: 5.04.00.00-2; 5.04.03.00-1; 5.04.04.00-8; 5.07.03.02-1 Forragem; Matéria seca; Nutrição; Ruminantes; Zea mays Pastagem e Forragicultura Forage; Dry matter  nutrition  ruminants  Zea mays.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/9299

Fermentative characteristics and nutritional value of elephant grass silage added with dehydrated banana peel
Provedor de dados: 2
Autores: Brant, Lara Maria Santos; Pimentel, Paulo Roberto Silveira; Rigueira, João Paulo Sampaio; Alves, Dorismar David; Carvalho, Mateus Alves Macedo; Alves, Wagner Sousa.
The aim of this study was to evaluate the fermentative losses and nutritional value of elephant grass silages with the increasing of inclusion levels of dehydrated banana peel. The experiment was conducted in a completely randomized design, with six treatments and four replications, being the silage exclusively from elephant grass, and five levels of inclusion of banana peel to the elephant grass silage, as the following - 5; 10; 15; 20 and 25%, being added based on natural matter. The addition of the banana peel in the silage reduced linearly (p &lt; 0.05) the pH, the ammoniacal nitrogen and the losses of the fermentative process. In addition, the inclusion of banana peel increased linearly (p &lt; 0.05) the dry matter and non-fibrous carbohydrates. On...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8; 5.04.04.01-6 co-product; Fermentation; Musa; Pennisetum purpureum.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33925

Lactobacillus plantarum LPBR01 as inoculant in sugarcane silage
Provedor de dados: 2
Autores: Hoffmann, Fabiane; Pagnoncelli, Maria Giovana Binder; Mayer, Lilian Regina Rothe; Fluck, Ana Carolina; Macagnan, Rodrigo; Tavares, Paloma Cristiny; Zorzi, Laura; Almeida, Wellington Fernando.
Sugar cane is highly productive (dry matter.hectare-1), but after ensiling process nutritional quality is affected, thus additives are needed to control or minimize losses. This study aimed to evaluate if Lactobacillus plantarum LPBR01 strain used as silage inoculant for sugar cane can control fermentation losses. Sugar cane samples (72) were divided in two treatments with three replicates, control (no Lactobacillus) and treatment silage with Lactobacillus (106 CFU g-1 of silage). Nutritional composition of samples in different periods of fermentation (0, 7, 15, 30 and 45 days) was estimated by determining levels of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose (HEM), mineral matter (MM) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8; 5.04.04.01-6 Fermentation; Microbiological inoculant; Bromatology.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/45708