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| Registros recuperados: 12 | |
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| Sartor,Laércio Ricardo; Adami,Paulo Fernando; Chini,Nelso; Martin,Thomas Newton; Marchese,José Abramo; Soares,André Brugnara. |
| O trabalho teve por objetivo caracterizar o efeito alelopático do extrato aquoso de acículas de Pinus taeda na germinação e no desenvolvimento inicial de plântulas de aveia preta comum (Avena strigosa). O experimento foi conduzido no Laboratório de Bioquímica e Fisiologia Vegetal da Universidade Tecnológica Federal do Paraná (UTFPR), Campus de Pato Branco, utilizando o delineamento inteiramente casualizado, com tratamento fatorial (bifatorial com parcela subdividida no tempo), com três repetições, sob condições de temperatura, umidade e luminosidade controladas. Os tratamentos foram compostos por cinco concentrações (0, 25, 50, 75 e 100%) de extrato bruto de acículas de pínus em estágio vegetativo (acícula verde), moderadamente decomposto (acícula seca) e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aveia preta comum; Alelopatia interespecífica; Pínus; Sistema silvipastoril. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000600004 |
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| Migliorini,Francisco; Soares,André Brugnara; Sartor,Laércio Ricardo; Adami,Paulo Fernando; Pattis,Carlos Alberto; Migliorini,Patrícia. |
| The objective of this work was to evaluate the effect on forage yield of sowing winter forage species before and after soybean harvest, at different nitrogen application levels. The experiment was set out in a randomized block design with a strip-split plot arrangement, and three replicates. Sowing methods (18 days before soybean harvest and six days after soybean harvest) were allocated in the main plots, and the combination among forage species (Avena strigosa cv. IAPAR 61 + Lolium multiflorum; A. strigosa cv. Comum + L. multiflorum; A. strigosa cv. Comum + L. multiflorum + Vicia villosa; A. strigosa cv. Comum + L. multiflorum + Raphanus sativus; and L. multiflorum) and nitrogen levels (0, 140, 280 and 420 kg ha-1) in the plots and subplots,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop-livestock system; Disking process; Feed gap; No-tillage; Sowing date. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001000022 |
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| Pitta,Christiano Santos Rocha; Soares,André Brugnara; Assmann,Tangriani Simioni; Adami,Paulo Fernando; Sartor,Laércio Ricardo; Migliorini,Francisco; Sollenberger,Lynn Elwood; Assmann,Alceu Luiz. |
| The objective of this work was to evaluate the influence of different grazing periods on beef animal production and on wheat forage and grain yield. The experiment was carried out in Pato Branco, PR, Brazil. Six grazing periods were evaluated (0, 21, 42, 63, 84, and 105 days) on dual-purpose wheat cultivar BRS Tarumã. Purunã steers, with average live weight of 162 kg and ten months of age, were kept under continuous grazing using a variable stocking rate, in order to maintain the established sward height of 25 cm. Greater increases in total animal gain (TAG) occurred with longer grazing periods. However, there was little increase after 63 days (490 kg ha-1), and TAG decreased from 552 to 448 kg ha-1 between 84 and 105 days. Grain yield decreased from 2,830... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; 'BRS Tarumã'; Forage mass; Nutritive value; Purunã steers; Weight gain. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001000036 |
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| Pitta,Christiano Santos Rocha; Adami,Paulo Fernando; Pelissari,Adelino; Assmann,Tangriani Simioni; Franchin,Marcia Fernanda; Cassol,Luís César; Sartor,Laércio Ricardo. |
| Poultry litter is an important nutrient source in agriculture, although little information is available regarding its decomposition rate and nutrient release. To evaluate these processes, poultry litter (PL) was applied to the soil to supply 100, 200 and 300 kg ha-1 N contained in 4,953, 9,907 and 14,860 kg ha-1 PL, respectively. The litter bag technique was used to monitor the process of decomposition and nutrient release from the litter. These bags were left on the soil surface and collected periodically (after 15, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, and 365 days). The dry matter (DM) loss was highest (35 %) after the first 30 days of field incubation. The highest nutrient release occurred in the first 60 days on the field, when 40, 34,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litter bag; Filed incubation; Organic fertilizer; Residual contents. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000300034 |
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| Sartor,Laércio Ricardo; Assmann,Alceu Luiz; Assmann,Tangriani Simioni; Bigolin,Paulo Egidio; Miyazawa,Mário; Carvalho,Paulo Cesar de Faccio. |
| Swine residue (SR) applied as nutrient source of crops such as corn, bean, soybean and wheat, besides representing an environmental-friendly way of disposing of organic waste resulting from swine production, may significantly increase grain yields, replacing mineral fertilizer. The objective was to evaluate the effect of SR rates on corn, common bean, soybean and wheat yields from 2002 to 2007, in comparison with mineral fertilizer. The experiment was carried out at the Instituto Agronômico do Paraná - IAPAR, Pato Branco, PR and consisted of increasing SR rates (0, 15, 30, 45, and 60 m³ ha-1) and one treatment with mineral fertilizer (NPK 4-30-10), using 250 kg ha-1 for bean and 300 kg ha-1 for corn, soybean and wheat. Also, in the treatment with mineral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilizer; Micronutrient; Foliar nitrogen; Organic residues; Foliar phosphorous. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200035 |
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| Piva,Jonatas Thiago; Sartor,Laércio Ricardo; Sandini,Itacir Eloi; Moraes,Anibal de; Dieckow,Jeferson; Bayer,Cimélio; Rosa,Carla Machado da. |
| ABSTRACT Brazilian agriculture contributes significantly to nitrous oxide (N2O) and methane (CH4) emissions, so the understanding of such emissions at the field is crucial for mitigation strategies. This study quantified the impact of N application and sheep grazing on the N2O and CH4 emissions from a subtropical Ferralsol under an integrated crop-livestock (ICL) management system. In a long-term experiment in southern Brazil, gaseous fluxes were measured during a year-long cycle of ryegrass (Lolium multiflorum) plus oats (Avena sativa) winter pasture and a summer crop of common beans (Phaseolus vulgaris). Three rates of urea-nitrogen (0, 75, and 150 kg ha-1) were applied to the winter-pasture, which was subjected to two sheep grazing levels (continuously... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrate; Ammonium; Water filled pore space; Sheep. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100520 |
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| Kirchner,Roque; Soares,André Brugnara; Sartor,Laércio Ricardo; Adami,Paulo Fernando; Migliorini,Francisco; Fonseca,Lidiane. |
| Objetivou-se determinar os possíveis efeitos da restrição de luminosidade, obtida com distintas densidades de árvores de Pinnus taeda, sobre a produção e qualidade de: aveia-preta (Avena strigosa Schreb) cv. Comum, aveia-branca (Avena sativa L.) cv. Fapa 2, azevém (Lolium multiflorum L.) cv. Comum, trigo (Triticum aestivum L.) duplo propósito cv. BRS Tarumã e ervilhaca peluda (Vicia villosa L.). Avaliaram-se três níveis de luminosidade: a sol aberto (sem presença de árvores de Pinnus taeda), 30% de restrição de radiação (usando espaçamento entre árvores de 15 × 3 m, com 222 árvores/ha) e 60% de restrição de radiação (usando espaçamento de 9 × 3 m, com 370 árvores/ha). Foram realizadas avaliações da produção de forragem, da composição química e dos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Composição química; Matéria seca; Sistema silvipastoril; Sombreamento. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100009 |
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| Soares,André Brugnara; Mezzalira,Jean Carlos; Bueno,Emanuel Antônio Centenaro; Zotti,Cleimary Fátima; Tirelli,Leila Angela; Cassol,Luis César; Marceniuk,Luzia Vanessa; Adami,Paulo Fernando; Sartor,Laércio Ricardo. |
| Objetivou-se avaliar o efeito de duas intensidades de pastejo sobre a produção animal em pastagem natural sobressemeada com espécies leguminosas exóticas (trevo branco, Trifolium repens; trevo vermelho, Trifolium pratense; e cornichão, Lotus corniculatus) sob pastejo contínuo com taxa de lotação variável. Os tratamentos consistiram de duas massas de forragem: baixa massa de forragem (MB) (1.021 kg de MS/ha) e alta massa de forragem (MA) (1.751 kg de MS/ha). As avaliações da pastagem e dos animais foram realizadas em intervalos de aproximadamente 30 dias. Houve forte interação tratamento <FONT FACE=Symbol>´</FONT> período experimental para a variável carga animal, que apresentou médias de 690 e 437 kg de MS/ha para MB e MA, respectivamente. O... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campo nativo; Introdução de espécies; Massa de forragem; Produção animal. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982006000100009 |
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| Adami,Paulo Fernando; Soares,André Brugnara; Assmann,Tangriani Simione; Assmann,Alceu Luiz; Sartor,Laércio Ricardo; Pitta,Christiano Santos Rocha; Franchin,Marcia Fernanda; Migliorini,Francisco. |
| This work aimed to evaluate the effects of grazing intensities and nitrogen fertilization levels on the dynamics of a Brachiaria plantaginea pasture. The experiment was laid out as a random block design, in a 3 × 2 factorial scheme, composed of three nitrogen levels (0, 200 and 400 kg/ha nitrogen in urea form) and two grazing intensities termed low mass (LM; forage mass of 1500 kg of DM/ha) and high mass (HM; forage mass of 3000 kg of DM/ha) in a continuously stocked swards with two replications. Animals used were half-blood Boer goats averaging five months old and 21 kg body weight (BW) for adjustment of the target forage mass. Real forage mass, average height of the plants and animal stocking rates were of 2,567 and 3,862 kg DM/ha; 23.6 and 31.2 cm and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria plantaginea; Forage production; Forage nutritive value; Forage sward; Reseeding; Stocking rate. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001200003 |
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| Soares,André Brugnara; Sartor,Laércio Ricardo; Adami,Paulo Fernando; Varella,Alexandre Costa; Fonseca,Lidiane; Mezzalira,Jean Carlos. |
| Objetivou-se avaliar o comportamento de espécies forrageiras (Brachiaria decumbens cv. Basilisk, Brachiaria brizantha cv. Marandu, Panicum maximum cvs. Tanzânia, Aruana e Mombaça, Hemarthria altissima cv. Florida; Paspalum notatum cv. Pensacola, Axonopus catharinensis, Cynodon sp. híbrido Tifton-85; Arachis pintoi cvs. Alqueire e Amarillo) submetidas a diferentes níveis de luminosidade produzidos por árvores de Pinus taeda (céu aberto; 9 m entre linhas e 3 m entre árvores; e 15 m entre linhas e 3 m entre árvores). Avaliaram-se a produção de MS, a relação lâmina foliar:colmo (L:C), o nível de florescimento das plantas, os teores de PB e FDN e as variáveis meteorológicas e do solo, na projeção da copa e no meio da entrelinha de árvores, de cada parcela. A... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Produção de forragem; Sistema silvipastoril; Sombreamento. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000300007 |
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| Pavinato,Paulo Sergio; Restelatto,Rasiel; Sartor,Laércio Ricardo; Paris,Wagner. |
| Alternative production of forages in periods of scarcity, especially during the winter, is expressively important for grazing of beef and dairy cattle in Brazil. The current work aimed to evaluate the influence of nitrogen fertilization on the production and nutritional value of ryegrass forage (cv. Barjumbo). The experiment was carried out on the winter seasons of 2009 and 2010, at the experimental area of UTFPR, Dois Vizinhos - PR, Brazil. The design consisted of randomized blocks with four N rates (0; 40; 80 and 120 kg ha-1) and three replicates. Each plot measured 5x5 m, with 20 cm row spacing and 2.5 cm between plants, totaling 20 kg ha-1 of viable seeds. It was determined the dry matter production, crude protein level, total accumulation of crude... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum; Crude protein; Empty of forage; Neutral detergent fiber. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000200002 |
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| Registros recuperados: 12 | |
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