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| Registros recuperados: 75 | |
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| Gul,B; Islam,M; Ahmad,S; Gul,S. |
| Spatial and temporal patterns of aboveground biomass and nutritive value of rangeland species with respect to the influence of grazing and soil moisture were investigated. The research was conducted during two years at the Tomagh Research Station, near Sanjawi, Ziarat District, Balochistan, Pakistan. This area is protected from grazing since 1998; however, some of the area is open for grazing. Tree sites were selected for research purposes: a protected plain, a protected hilly, and an unprotected plain grazed area. Sampling was carried out during the spring, summer and autumn seasons. Results revealed that soil moisture was greater at the protected than unprotected sites. The aboveground plant biomass was 66% to 76% lower at unprotected than protected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rangeland; Biomass production; Season; Semiarid; Grazing; Grass. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000100013 |
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| SÁ, J. M. e; JANTALIA, C. P.; TEIXEIRA, P. C.; POLIDORO, J. C.; BENITES, V. de M.; ARAÚJO, A. P.. |
| The objective of this work was to evaluate agronomic and P recovery efficiencies of a granulated organomineral phosphate fertilizer (OMF) produced from poultry litter, compared with those of monoammonium phosphate (MAP), in soils with different textures. The experiment followed a 2x2x4+2 factorial arrangement, with two Oxisols (sandy loam and clay loam textures), two sources of P (OMF and MAP), four levels of P (50, 100, 200, and 400 mg kg-1), besides two control treatments without P application. The treatments were evaluated in 10-kg pots filled with soil, during four successive cultivations of corn without replacing the P absorbed by the plants, in order to evaluate the actual and residual effects of the fertilizers. Available P contents in the soil were... |
| Tipo: Artigo de periódico |
Palavras-chave: Phosphate fertilization; P recovery efficiency; Acúmulo de biomassa; Adubação fosfatada; Eficiência de recuperação de P; Solo tropical; Zea Mays; Biomass production; Tropical soils. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1079152 |
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| ZOHAIB,A.; TABASSUM,T.; ANJUM,S.A.; ABBAS,T.; NAZIR,U.. |
| ABSTRACT: Weeds associated with crops may impose their phytotoxic effects on crop plants through the release of their allelochemicals and hence seriously reduce crop productivity. The present study was conducted to investigate the allelopathic effect of water soluble phenolics of weeds associated with wheat crop (Vicia sativa, Trigonella polycerata, Lathyrus aphaca, Medicago polymorpha, Melilotus indica) on germinability and biomass production of wheat seedlings by using their water extracts at 2.5% (w/v) and 5% (w/v) concentrations and residues of the same weeds with 0, 15 and 30 d decomposition periods at 2% (w/w) concentration. The results showed that the water extracts of M. indica and V. sativa at 5% concentration imposed the most inhibitory effect on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wheat; Weed allelopathy; Water extracts; Residues; Germination; Biomass production. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100287 |
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| JUN,L.V.; XUE-FENG,Z.; ANJUM,S.A.; JI-XUAN,S.; YAN,Z.; YU-FENG,D.; ZOHAIB,A.; ALI,I.; YU,XU; XIU-JUAN,H.; SAN-GEN,W.. |
| ABSTRACT: Plant growth regulators are an immense group of substances that have the ability to alter growth pattern of plants and can be used for improving plant growth and productivity. A study was conducted in the Xilin Gol grassland of Inner Mongolia, China, to ascertain the growth and biomass production of Stipa krylovii in response to exogenous application of different growth regulators at various concentrations viz. naphthalene acetic acid (NAA), 6-benzylaminopurine (6-BA), brassinosteroid (BR), sodium nitrophenolate (SNP) and forchlorfenuron, and gibberellic acid (GA3). Application of growth regulators significantly enhanced the growth and biomass production of S. krylovii. The height of vegetative shoot was enhanced mostly by the application of 100... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth; Pastures; Biomass production. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100251 |
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| Polak-Berecka,Magdalena; Waśko,Adam; Kordowska-Wiater,Monika; Targoński,Zdzisław; Kubik-Komar,Agnieszka. |
| Response surface methodology (RSM) was employed to study the effects of various medium components on biomass production by Lactobacillus rhamnosus E/N. This strain is commonly used in the pharmaceutical and food industries due to its beneficial effect on the human gut and general health. The best medium composition derived from RSM regression was (in g/l) glucose 15.44, sodium pyruvate 3.92, meat extract 8.0, potassium phosphate 1.88, sodium acetate 4.7, and ammonium citrate 1.88. With this medium composition biomass production was 23 g/l of dry cell weight after 18 h of cultivation in bioreactor conditions, whereas on MRS the yield of biomass was 21 g/l of dry cell weight. The cost of 1 g of biomass obtained on MRS broth was calculated at the level of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Response surface methodology; Lactobacillus rhamnosus; Medium selection; Biomass production. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400035 |
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| MAGALHÃES, T. M.; XAVIER, M. G. B.; MONTEZUMA, L. V.; RASSI, V. C.; RAMOS FILHO, L. O.. |
| Resumo: Em Sistemas Agroflorestais (SAF), além das culturas agrícolas de interesse comercial, há também espécies forrageiras, arbustivas, gramíneas e arbóreas destinadas à produção de biomassa. Devido à grande diversidade e complexidade, pouco se sabe sobre a produtividade das espécies e qual a área necessária ou número de indivíduos de cada espécie arbórea seria necessário para suprir a demanda nutricional do sistema. Para começar a responder essas questões, foi realizado o monitoramento da produção de biomassa e crescimento das espécies arbóreas mutambo (Guazuma ulmifolia L.), eucalipto (Eucalyptus urograndis) e da gramínea capim Mombaça (Megathyrsus maximus syn. Panicum maximum cv. Mombaça) em um modelo de SAF implantado na Embrapa Meio Ambiente, em... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Agrossilvicultura; Guazuma Ulmifolia; Eucalipto; Agroforestry; Green manures; Plant growth; Megathyrsus maximus; Biomass production. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126419 |
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| SOUZA, H. T. de; CASTRO, F. T. de; OLIVEIRA, M. M. de; ROSA, T. V.; RAMOS FILHO, L. O.. |
| Resumo: Os Sistemas Agroflorestais (SAFs) apresentam, entre seus inúmeros benefícios, a possibilidade de produção interna de biomassa para ciclagem de nutriente e melhoria das condições do solo. Diversas espécies podem ser utilizadas com o enfoque nessa produção, entre elas, as gramíneas, plantadas nas entrelinhas do SAF. O experimento foi implantado no sítio Experimental da Embrapa Meio Ambiente, em Jaguariúna-SP, visando avaliar o potencial de produção de biomassa de duas espécies de capim, o Mombaça (Megathyrsus maximus cv Mombaça) e o Guatemala (Tripsacum fasciculatum Trin. ex Asch.). O desenho experimental utilizado foi de blocos casualizados, com três repetições (parcelas de 3 x 4m) e dois tratamentos (cada capim compondo um tratamento). O Mombaça... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Agrofloresta; Agroecologia; Megathyrsus maximus cv Mombaça; Tripsacum fasciculatum; Agrossilvicultura; Biomassa; Matéria Seca; Agroforestry; Biomass production; Megathyrsus maximus. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1138573 |
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| Becker, Arno. |
| Biomass based energy production has attained a significant market share within the developing renewable energy market. In comparison to alternative renewable energy sources, biomass has several special features: it is not inexhaustible in the short term (limitation of arable land) and it is not only an energy source. Other usages like food or feed compete with energy production for this resource. A number of problems arise which have a direct impact on the fulfillment of policy objectives which are connected with its promotion. Primarily, the production of bioenergy has significant impacts on coupled biomass markets. Further, a change in production intensity or arable land use increases the use of nutrient loads and agro - chemicals. When evaluating... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Bioenergy; Biofuels; Biomass production; Impact analysis.; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/43974 |
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| GOTTSCHALK, L. M. F.; SOUZA, E. F. de; PONTES, S. M.; LEAL JUNIOR, W. F.; NOGUEIRA, R. I.; MELLO, V. F. de; SILVA, J. P. L. da; SANTOS, K. M. O. dos. |
| The delivery of probiotic microorganisms has been shown to be an adequate strategy for the composition of the microbiota and the activity of intestinal health, with relevant health benefits. The market for probiotic cultures for use in food in Brazil is restricted to a few multinational companies, which sell high-cost imported products. A prospection of microorganisms with probiotic properties can lead to the production of lactic ferments, which must have their results proven by scientific studies. Embrapa has a collection of lactobacilli isolated from dairy products identified according to the species level and selected with the function of probiotic potential and properties of technological interest. Lactobacillus plantarum is a homofermentative... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Produção de biomassa; Propriedades probiótica; Secagem; Biomassa; Soro; Lactobacillus; Spray drift; Biomass; Biomass production; Lactobacillus plantarum; Whey. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1149816 |
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| Egbendewe-Mondzozo, Aklesso; Swinton, Scott M.; Izaurralde, R. Cesar; Manowitz, David H.; Zhang, Xuesong. |
| This paper introduces a spatial bioeconomic model for study of potential cellulosic biomass supply at regional scale. By modeling the profitability of alternative crop production practices, it captures the opportunity cost of replacing current crops by cellulosic biomass crops. The model draws upon biophysical crop input-output coefficients, price and cost data, and spatial transportation costs in the context of profit maximization theory. Yields are simulated using temperature, precipitation and soil quality data with various commercial crops and potential new cellulosic biomass crops. Three types of alternative crop management scenarios are simulated by varying crop rotation, fertilization and tillage. The cost of transporting biomass to a specific... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Biomass production; Bioenergy supply; Biofuel policy; Bioenergy; Cellulosic ethanol; Agro-ecosystem economics; Ecosystem services economics; Agro-environmental trade-off analysis; Mathematical programming; EPIC; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Production Economics; Resource /Energy Economics and Policy; Q16; Q15; Q57; Q18. |
| Ano: 2010 |
URL: http://purl.umn.edu/98277 |
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| Silva,Vicente de Paulo Rodrigues da; Silva,Roberta Araújo e; Maciel,Girlene Figueiredo; Braga,Célia Campos; Silva Júnior,José Luiz Cabral da; Souza,Enio Pereira de; Almeida,Rafaela Silveira Rodrigues; Silva,Madson Tavares; Holanda,Romildo Morant de. |
| ABSTRACT: The water-driven AquaCrop model to simulate yield response has been calibrated and validated for soybean cultivated under different water levels irrigation in Matopiba region, Brazil. The crop was submitted to seven irrigation treatments during the dry season and a dry treatment in the rainy season. The model was parameterized and calibrated by using soybean yield data collected at field level. Model performance was evaluated by using the following statistical parameters: prediction error (Pe), Nash-Sutcliffe efficiency index (E), coefficient of determination (R2), mean absolute error (MAE), root mean square error normalized (RMSEN) and Willmott’s index (d). The statistical analyses of the AquaCrop model calibrated for the Matopiba region... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass production; Evapotranspiration leaf area index; Deficit irrigation yield. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000100351 |
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| LOPES, B. K. M.; VASCONCELOS, E. C. G.; CÂNDIDO, M. J. D.; LOPES, M. N.; CONRADO, J. A. de A.; OLIVEIRA, M. M.; ALMEIDA, B. P. de; POMPEU, R. C. F. F.. |
| Abstract: The objective of this study was to evaluate the effect of nitrogen fertilization on tamani-grass managed under cut. The experiment was carried out in the city of Fortaleza-CE, in the year 2017, in a randomized complete block design. The treatments consisted of increasing doses of 0; 100; 300; 600 and 1,200 kg N ha-1, being the experimental unit plot of 2.5 x 5 m, cultivated with tamani-grass. Leaf elongation rate and stem elongation rate behaved in a linear positive manner, with increments estimated to be 0.00141 and 0.00008643 cm tiller-1 to day-1, making 2.20380 and 3.8958 for the doses of 0 and 1200 kg N ha-1 respectively. The total senescence rate was not significant for the nitrogen doses, presenting 0.38 ± 0.18. The leaf life span responded... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Efeito do nitrogênio; Taxa de alongamento foliar; Nutrição Vegetal; Gramínea Forrageira; Dose; Biomassa; Megathyrsus maximus; Nitrogen fertilizers; Brazil; Semiarid soils; Biomass production. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1096076 |
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| MOREIRA, J. B. da S.; COUTINHO, D. N.; CÂNDIDO, M. M. D.; POMPEU, R. C. F. F.; Duarte MARANHÃO, T. D.; NASCIMENTO, B. B. do; ALMEIDA, B. P. de; NASCIMENTO, D. R. do. |
| Abstract: In regions where the poor rainfall distribution reduces the availability of food to feed the herds, sorghum hybrids present as a viable forage resource to prolong the forage supply in the field. This study evaluated the morphogenetic characteristics of sorghum hybrids under grazing frequencies managed under intermittent stocking with sheep. The experiment was conducted at Núcleo de Ensino e Estudos em Forragicultura, Fortaleza-CE. The treatments were combinations between hybrids of Sorghum for grazing (BR and CM) and two grazing frequencies (60 and 80 cm canopy height), in a 2 x 2 factorial randomized block design, with four replications. Higher leaf elongation rate was observed in CM hybrid pastures and in the 60 cm frequency. The stem... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Altura do dossel; Estacionalidade da produção; Fluxo de biomassa; Lotação rotativa; Semiárido; Brasil; Produção de forragem; Pasto; Seasonality; Ovino; Sorgo Forrageiro; Sheep; Forage production; Canopy; Biomass production; Sorghum (Poaceae); Semiarid soils; Brazil. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1096077 |
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| Registros recuperados: 75 | |
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