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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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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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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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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 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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Caracterização e seleção de genótipos de Megathyrsus maximus de porte baixo com potencial de uso na região semiárida brasileira. Infoteca-e
BUENO, L. G.; ALVES, M. M. de A.; ROCHA, J. E. da S.; CAVALCANTE, A. C. R.; GALVANI, D. B.; DINIZ, F. M.; VALLE, C. B. do; CÂNDIDO, M. J. D..
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: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) 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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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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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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Crescimento de plantas de soja em função da redução da densidade de semeadura e sua relação com a Produtividade. Infoteca-e
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: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) 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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Cultivation of microalgae Spirulina platensis (Arthrospira platensis) from biological treatment of swine wastewater Ciênc. Tecnol. Aliment.
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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Cultivation of Trichosporon mycotoxinivorans in sugarcane bagasse hemicellulosic hydrolyzate Electron. J. Biotechnol.
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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Desempenho produtivo de híbridos de sorgo para pastejo manejados sob duas alturas. Infoteca-e
POMPEU, R. C. F. F.; MARANHÃO, T. D.; COUTINHO, D. N.; CÂNDIDO, M. J. D.; VASCONCELOS, E. C. G.; LOPES, M. N.; NASCIMENTO, B. B. do; GUEDES, F. L.; RODRIGUES, J. A. S..
Avalia os componentes da biomassa de dois híbridos de sorgo para pastejo submetidos a duas frequências de pastejo (60 cm e 80 cm de altura) por ovinos.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Produção de biomassa; Manejo de pastagem; Semiárido; Brasil; Forragem; Gramínea Forrageira; Sorgo Forrageiro; Forrageira Tropical; Ovino; Sheep feeding; Forage grasses; Biomass production; Pasture management; Brazil; Semiarid zones.
Ano: 2019 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1117076
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Effect of soil contaminated by diesel oil on the germination of seeds and the growth of Schinus terebinthifolius Raddi (Anacardiaceae) Seedlings BABT
Bona,Cleusa; Rezende,Igor Mendonça de; Santos,Gedir de Oliveira; Souza,Luiz Antônio de.
The effect of soil polluted by diesel oil on the germination of seeds and the growth of Schinus terebinthifolius Raddi seedlings was analyzed at different times after contamination of the soil. The experiments were conducted under greenhouse conditions, with four treatments and five repetitions. The four treatments included: soil contaminated 30 (T30), 90 (T90) or 180 (T180) days before planting as well as a non-polluted soil (T0) (control). Soil saturated to 50% of its maximum retention capacity (MRC) was contaminated with diesel oil at a rate of 92.4 mL per kg. The germination rate and germination speed index (GSI) were significantly affected only in T30. The development of the plants was affected significantly in all the treatments, with reductions of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aroeira; Biomass production; Eophyll; Residual contamination.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600025
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Effect of three different types of culture conditions on Spirulina maxima growth BABT
Monteiro,Maria Paula da Costa; Luchese,Rosa Helena; Absher,Theresinha Monteiro.
Growth of Spirulina maxima was studied in three types of culture conditions with four replicates each: 1) manual aeration with natural sunlight; 2) manual aeration with artificial light; and 3) constant aeration with an aquarium compressor and artificial light. After 185 days of incubation, growth declined in the first two treatments, while in the third treatment, higher growth was observed with average optical density of 3.7 against 1.8 and 1.9 in the first and second treatment, respectively. This was probably due to the fact that under constant aeration the salts were suspended avoiding the crystallization what could cause a decrease in the availability of the necessary nutrients for the growth. Also, the constant stirring allowed all the cells to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquarium compressor; Biomass production; Microalgal growth; Spirulina.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200016
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Energianövények szántóföldi termelésének optimalizálása AgEcon
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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Evaluación del efecto de diferentes diluciones de agua de coco suplementada con biotina, para la producción de levadura (Saccharomyces cerevisiae) a nivel matraz y en biorreactor de tanque agitado. Colegio de Postgraduados
Pérez Ramírez, Jacqueline.
En esta investigación, se evaluó el efecto de las diluciones del agua de coco y la adición de biotina sobre el crecimiento de Saccharomyces cerevisiae. En este sentido, la dilución 1:1 adicionada con biotina (µ= 0.21 h-1) y biomasa (3.32 g/L) fue suficiente para dar los requerimientos nutricionales a la cepa estudiada, en comparación con el agua de coco 100% (µ= 0.13 h-1) y biomasa (3.28 g/L) y un medio cultivo sintético (µ= 0.12 h-1) con biomasa de 2.86 g/L. Los nutrientes disponibles en diluciones 1:2 (µ= 0.18 h-1) y biomasa (2.25 g/L), podrían ser considerables para estudios posteriores; no así, las diluciones 1:5 y 1:10 que parecen inadecuadas para el óptimo crecimiento de S. cerevisiae. Se observó el efecto positivo de la biotina sobre el crecimiento...
Palavras-chave: Cepa; Medio de cultivo; Biomasa; Strain; Culture medium; Biomass production; Maestría Tecnológica; Agroindustria.
Ano: 2011 URL: http://hdl.handle.net/10521/643
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Fisiología y manejo de la higuera (Ficus carica L.) en producción forzada bajo cubierta plástica. Colegio de Postgraduados
Mendoza Castillo, Víctor Manuel.
En México la producción de frutas para el consumo nacional se restringe a temporadas de cosecha reducidas, por lo que el espacio de mercado incrementa la posibilidad de importar grandes volúmenes de frutos de diferentes especies, incluyendo al higo, planta con excelente capacidad de adaptación en la República Mexicana cultivada en huertos familiares en todas sus regiones. Para proponer al higo como un sistema de producción intensiva, se documentaron las respuestas fisiológicas a nivel de planta completa en sistemas intensivos de producción bajo cubiertas plásticas. El objetivo general fue generar tecnologías para el manejo y producción intensiva del cultivo del higo y conocer su efecto en la fisiología de la planta. Los objetivos particulares fueron:...
Palavras-chave: Higo; Cubierta plástica; Producción intensiva; Producción de biomasa; Relación fuente-demanda; Fig; Plastic cover; Intensive production; Biomass production; Source-demand relationship; Fisiología Vegetal; Doctorado.
Ano: 2013 URL: http://hdl.handle.net/10521/1993
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