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| Registros recuperados: 34 | |
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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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| 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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| 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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| 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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| BUENO, L. G.; GALVANI, D. B.; DINIZ, F. M.; JANK, L.; BEZERRA, J. W. T.; JESUS, A. A. de. |
| Resumo: Este trabalho foi conduzido com o objetivo de selecionar genótipos de Panicum maximum (sin. Megathyrsus maximus) de porte baixo com potencial de adaptação e uso no Semiárido brasileiro. Foram avaliados 24 genótipos, distribuídos em delineamento experimental de blocos completos casualizados com três repetições quanto à produção de biomassa, densidade populacional de perfilhos e altura de plantas. A altura do dossel no período chuvoso variou entre 29,62 cm e 99,78 cm, sendo possível classificar 9 genótipos como sendo de porte baixo para as condições ambientais e experimentais avaliadas na região (até 50 cm de altura). O genótipo PM22 apresentou elevada densidade populacional de perfilhos (3216 perfilhos/m2 ) e relação folha:colmo (6,33) no período... |
| Tipo: Folhetos |
Palavras-chave: Capim Massai; Semiárido; Produção de biomassa; Brasil; Forragem; Gramínea Forrageira; Forage production; Forage grasses; Semiarid soils; Biomass production; Brazil. |
| Ano: 2019 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1117067 |
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| BALBINOT JUNIOR, A. A.; FERREIRA, A. S.; WERNER, F.; SILVA, M. A. de A. e; ZUCARELI, C.. |
| O objetivo deste trabalho foi avaliar o crescimento de duas cultivares de soja durante o ciclo de desenvolvimento, em função da redução na densidade de semeadura, e verificar a sua relação com a produtividade. Foi conduzido um experimento de campo nas safras 2016/17 e 2017/18, em Londrina, PR. O delineamento experimental foi de blocos completos casualizados, com cinco repetições e esquema fatorial 2 x 5. O primeiro fator se consistiu de duas cultivares de soja, BRS 1010IPRO e NS 5959IPRO e o segundo por cinco densidades de semeadura: 100, 80, 60, 40 e 20% da quantidade de sementes indicada pelo obtentor das cultivares. Em geral, não houve diferenças expressivas de biomassa acumulada durante o ciclo de desenvolvimento entre as densidades de 100, 80 e 60% do... |
| Tipo: Folhetos |
Palavras-chave: Soja; Densidade de Semeadura; Pratica Cultural; Biomassa; Soybeans; Biomass; Biomass production. |
| Ano: 2018 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1099933 |
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| Mezzomo,Natália; Saggiorato,Adriana Galon; Siebert,Rochele; Tatsch,Pihetra Oliveira; Lago,Maria Cristina; Hemkemeier,Marcelo; Costa,Jorge Alberto Vieira; Bertolin,Telma Elita; Colla,Luciane Maria. |
| The microalgae biomass production from swine wastewater is a possible solution for the environmental impact generated by wastewater discharge into water sources. The biomass can be added to fish feed, which can be used in the formulation of meat products. This work addresses the adaptation of the microalgae Spirulina platensis (Arthrospira platensis) in swine wastewater and the study of the best dilution of the wastewater for maximum biomass production and for removal of Chemical Oxygen Demand (COD), ammonia and phosphorous to the microalgae. The cultivation of Spirulina platensis, strain Paracas presented maximum cellular concentrations and maximum specific growth rates in the wastewater concentration of 5.0 and 8.5%. The highest COD removals occurred... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arthospira; Biomass production; Pollutant removal; Spirulina; Swine wastewater. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000100026 |
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| Matos,Ítalo Thiago Silveira Rocha; Cassa-Barbosa,Luciana Araújo; Neto,Pedro Queiroz Costa; Filho,Spartaco Astolfi. |
| Background: The yeast strain IB09 was isolated from the gut of Calosoma sp. (Carabidae, Coleoptera, Insecta) that were collected in the central Amazon rainforest. First, tolerance of the strain to ethanol and heat was tested. Then, IB09 was cultivated in a medium using sugarcane bagasse hemicellulosic hydrolyzate as a carbon source, and cell growth (OD600), specific growth rate (µMAX, h-1), biomass yield (Y B, g.g-1) and relative sugar consumption (RSC, %) were evaluated. Taxonomic identification was determined by sequencing the ITS1 region of IB09 and comparing it to sequences obtained from the GenBank database (NCBI). Results: IB09 showed both ethanol tolerance and thermotolerance. Relative sugar consumption indicated that IB09 was able to perform... |
| Tipo: Journal article |
Palavras-chave: Amazon strain; Biomass production; Biotechnological potential; Saccharification. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000100002 |
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| Bedene Szoke, Eva; Mohamed, Zsuzsanna. |
| Az általunk kidolgozott Biomassza Termelési Modell (BTM) lineáris programozáson alapul, és lehetővé teszi, hogy adott mezőgazdasági területre vonatkozóan meghatározzák az optimális vetésszerkezetet, különböző célfüggvények mellett. A különböző célfüggvények esetére vonatkozó optimalizálást a gazdasági környezet, különösen a szabályozó rendszer változása miatt tartottuk szükségesnek, amely adott körülmények között a legkedvezőbb gazdasági haszonnal jár. A döntés fő kérdése, hogy a rendelkezésre álló földterület és erőforrás-kapacitás mellett élelmiszercélú, vagy inkább energetikai célú hasznosítás irányában célszerű-e elmozdulni. --------------------------------------- We have developed a Biomass Production Model (BTM), which is based on linear programming.... |
| Tipo: Journal Article |
Palavras-chave: Biomassza-termelés; LP modell; Optimalizálás.; Biomass production; LP model; Optimisation; Land Economics/Use; Production Economics; Research Methods/ Statistical Methods. |
| Ano: 2010 |
URL: http://purl.umn.edu/99135 |
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| Registros recuperados: 34 | |
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