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Aboveground biomass and concentration of nutrients in semiarid rangeland plant species: Influence of grazing and soil moisture Phyton
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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Adubos nitrogenados aplicados em capim - Coastcross: recuperação aparente do nitrogênio. Repositório Alice
PRIMAVESI, A. C.; PRIMAVESI, O.; CORRÊA, L. de A.; CANTARELLA, H.; SILVA, A. G..
2002
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Cynodon dactylon; Dose de nitrogênio; Nitrato de amônio; Nitrogênio absorvido; Produção de biomassa; Uréia; Ammonium nitrate; Biomass production; Nitrogen rates; Nitrogen uptake; Urea.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/46134
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Agronomic and P recovery efficiency of organomineral phosphate fertilizer from poultry litter in sandy and clayey soils. Repositório Alice
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 em periódico indexado (ALICE) 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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Allelopathic Effect of Some Associated Weeds of Wheat on Germinability and Biomass Production of Wheat Seedlings Planta Daninha
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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Annual variability of water productivity components in the watershedof Cabeceira Comprida stream, Santa Fé do Sul, Brazil. Repositório Alice
COAGUILA, D. N.; HERNANDEZ, F. B. T.; TEIXEIRA, A. H. de C.; NEALE, C. M.; FRANCO, A. M.; LEIVAS, J. F..
this study aimed to evaluate the actual evapotranspiration, biomass, and water productivity using the SAFER model by using images from do Landsat8, in the watershed of Cabeceira Comprida stream, Santa Fé do Sul, SP, Brazil.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Actual evapotranspiration; Biomass production; SAFER; Evapotranspiração real; Produção de biomassa; Landsat 8.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1059756
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Application of Plant Growth Regulators to Stipa krylovii in the Xilin Gol Grassland Planta Daninha
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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Application of response surface methodology to enhancement of biomass production by Lactobacillus rhamnosus E/N BJM
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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Avaliação da qualidade nutricional da fração total da Brachiaria decumbens Stapf, sob condições de enriquecimento de gás carbônico. Repositório Alice
SILVA, L. O. C. da; GHINI, R.; LOUVANDINI, H; ABDALLA, A. L..
2012
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Mudanças climáticas; Biomassa; Brachiaria; Clima; Dióxido de carbono; Fibra bruta; Biomass production; Brachiaria; Carbon dioxide; Climate change.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/981856
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Avaliação de cultivares de sorgo forrageiro no Estado do Acre. Repositório Alice
PACHECO, E. P..
O presente trabalho se refere ao segundo teste de progênies citado, cujo objetivo foi avaliar os indivíduos dentro de famílias de meios-irmãos quanto à produção de biomassa; rendimento de óleo essencial e; teor de safrol no óleo essencial para estimativa de parâmetros genéticos como variâncias genéticas e correlações entre e dentro de famílias.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Pastos forrajeros; Ensayos de variedades; Producción de biomasa; Acumulación de materia seca; Aclimatación; Factores ambientales; Fitomejoramiento; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Gramínea Forrageira; Sorgo Forrageiro; Sorghum spp; Comportamento de Variedade; Biomassa; Matéria Seca; Aclimatação; Condição Ambiental; Melhoramento Genético Vegetal; Forage grasses; Variety trials; Biomass production; Dry matter accumulation; Acclimation; Environmental factors; Plant breeding.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/502649
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Biomass for energy production in the context of selected European and international policy objectives AgEcon
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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Biomass production, elemental and fibre composition of Brachiaria produced under free air carbon dioxide enrichment conditions. Repositório Alice
ABDALLA, A. L.; GHINI, R.; NATEL, A. S.; FAGUNDES, G. M.; ABDALLA, A. L.; LOUVANDINI, H; TORRE NETO, A..
2013
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Mudanças climáticas; Brachiaria; Fibra bruta; Biomassa; Clima; Dióxido de carbono; Climate change; Carbon dioxide; Brachiaria; Biomass production.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/981745
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Biomass Supply from Alternative Cellulosic Crops and Crop Residues: A Preliminary Spatial Bioeconomic Modeling Approach AgEcon
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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Calibration and validation of the AquaCrop model for the soybean crop grown under different levels of irrigation in the Motopiba region, Brazil Ciência Rural
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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Can Dispersed Biomass Processing Protect the Environment and Cover the Bottom Line for Biofuel? AgEcon
Egbendewe-Mondzozo, Aklesso; Swinton, Scott M.; Bals, Bryan D.; Dale, Bruce E..
This paper compares environmental and profitability outcomes for a centralized biorefinery for cellulosic ethanol that does all processing versus a biorefinery linked to a decentralized array of local depots that pretreat biomass into concentrated briquettes. The analysis uses a spatial bioeconomic model that maximizes predicted profit from crop and energy products, subject to the requirement that the biorefinery must be operated at full capacity. The model draws upon biophysical crop input-output coefficients simulated with the EPIC model, as well as input and output prices, spatial transportation costs, ethanol yields from biomass, and biorefinery capital and operational costs. The model was applied to 82 cropping systems simulated across 37...
Tipo: Working Paper Palavras-chave: Biomass production; Bioenergy supply; Cellulosic ethanol; Environmental trade-off analysis; Bioeconomic modeling; EPIC; Spatial configuration; Local biomass processing; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Resource /Energy Economics and Policy; Q16; Q15; Q57; Q18.
Ano: 2011 URL: http://purl.umn.edu/119348
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Características morfogênicas do capim-tamani irrigado sob doses de adubação nitrogenada. Repositório Alice
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: Artigo em anais de congresso (ALICE) 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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Características morfogênicas em híbridos de sorgo para pastejo submetidos a duas frequências de desfolhação com ovinos Repositório Alice
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: Artigo em anais de congresso (ALICE) 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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Caracterización del sistema enzimatico de los hongos comestibles (Pleurotus) como una estrategia de selección de cepas para la producción rural Colegio de Postgraduados
Lima Peralta, Rosa María de.
En el presente trabajo se investigo la producción extracelular de celulasas en medio líquido con 12 cepas nativas mexicanas y una comercial de Pleurotus. También se determino el contenido de proteína en los extractos y el peso seco de las colonias. Y se determino el coeficiente de correlación entre las variables producción de celulasa y proteína. Se encontró que el mejor medio de cultivo líquido para la producción de celulasas fue el sugerido por Elisashvili et al (2008a), con algunas modificaciones. Todas las cepas de Pleurotus crecieron sobre el medio de cultivo líquido con celulosa (Solka Floc) como fuente de carbono debido a que pudo producir enzimas celulolíticas para degradar el substrato. Los resultados muestran que la actividad enzimática se...
Tipo: Tesis Palavras-chave: Especies de Pleurotus; Fermentación líquida; Actividad enzimática; Producción de proteína; Producción de biomasa; Maestría; EDAR; Estrategias para el Desarrollo Agrícola Regional; Pleurotus species; Liquid fermentation; Enzyme activity; Protein production; Biomass production.
Ano: 2009 URL: http://hdl.handle.net/10521/1556
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Comparison of stability methods in elephant-grass genotypes for energy purposes. Repositório Alice
ROCHA, A. dos S.; DAHER, R. F.; GRAVINA, G. de A.; PEREIRA, A. V.; RODRIGUES, E. V.; VIANA, A. P.; SILVA, V. Q. R. da; AMARAL JUNIOR, A. T. do; NOVO, A. A. C.; OLIVEIRA, M. L. F.; OLIVEIRA, E. da S..
Elephant grass is a plant of tropical origin with high biomass-production potential that stands out today as an alternative energy source. The potential of its genotypes depends on the genotype × environment interaction. The objective of this study was to estimate the genotype × environment interaction and compare stability methods in elephant grass for biomass production in a biannual cutting regime. The experiment was conducted in a randomized block design with two replicates and evaluations of 73 elephant-grass genotypes in six cuts. The trait dry matter yield was utilized for the analysis of the genotype × environment interaction and the stability. The stability analysis methods employed were those of Yates and Cochran, Plaisted and Peterson, Wricke,...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pennisetum purpureum; Energy alternative; Biomass production; Genotype by environment interaction.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1033418
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Components of net aerial primary production in a Bambusa oldhamii plantation Agrociencia
Castañeda-Mendoza,Arturo; Vargas-Hernández,J. Jesús; Gómez-Guerrero,Armando.
Biomass production is an important criterion to be considered for the establishment of commercial forestry plantations for bioenergy production. In this study, an estimation of net aerial primary production (NAPP) was made in a young plantation of Bambusa oldhamii Munro from the sum of biomass production from growth of new culms, biomass increment of the pre-existing culms, and production of litter. Biomass production in the incorporated culms was 15.82 Mg ha-1 year-1, of which 13.77 Mg (87 %) corresponded to stems and 2.05 Mg (13 %) to foliage. Biomass increment in the pre-existing culms was 10.88 Mg ha-1. One- and two-year-old cohort production was 7.31 and 3.57 Mg ha-1. Litter production was 5.56 Mg ha-1 year-1. Results show that NAPP was 32.20 Mg ha-1,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bamboo; Litter; Biomass production; Bioenergy; Tropical forest species.
Ano: 2012 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952012000100006
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Construção de modelo ecofisiologico de simulação para estimar a produtividade potencial de cana de açucar no Brasil e Australia. Repositório Alice
SILVA, F. C. da; BARBIERI, V.; CASTRO, A. de; NAKAMOTO, A. de S..
Resumo: Neste artigo apresenta-se a construção de um modelo ecofisiológico-matemático (BrCane) para predizer a produtividade potencial - sem restrições nutricionais ou de água, a fim de analisar a sustentabilidade da expansão do cultivo de cana-de-açúcar em novas áreas para produção de etanol. A arquitetura do modelo BRCANE foi concebida para uma planta tipo C4, onde a evolução mensal da biomassa foi estimada em função da temperatura do ar e da radiação incidente. Nas simulações apresentadas a produção de biomassa levou em conta a taxa bruta de fotossíntese subtraída às perdas para respiração de manutenção, senescência de folhas e morte de perfilhos durante o ciclo da cultura. O modelo BRCANE também foi usado para descrever o comportamento fisiológico em...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Modelo ecofisiológico; Produtividade potencial; Curva de crescimento; Produção de biomassa; Ecophysiological model; Climatic variables; Leaf area index; Biomass production.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1000900
Registros recuperados: 55
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