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| Registros recuperados: 225 | |
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| Lucas Santoyo, Luis Gustavo. |
| Se evaluó el efecto de la inoculación de una mezcla de hongos micorrízicos arbusculares (HMA) compuesta por Rhizophagus intraradices, Glomus albidum, Claroideoglomus claroideum, Rhizophagus diaphanus, Acaulospora laevis, Glomus sp.1, Funneliformis geosporum, Glomus sinuosum, Acaulospora denticulata, Glomus sp.2, Glomus sp.3 y Glomus sp.4 en chile guajillo (Capsicum annuum L.) fertilizado con diferentes dosis de fósforo (0, 25, 50 y 75 kg ha-1). El nitrógeno y potasio se mantuvieron constantes (230 y 150 kg ha-1 respectivamente) en todos los tratamientos. Se usó semilla proveniente de la comunidad Nigromante, Zacatecas, y suelo con bajo contenido de fósforo (5 mg kg-1 de P-Olsen) colectado en Tequexquinahuac, Estado de México. Las evaluaciones para altura... |
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Palavras-chave: Chile guajillo; Hongos micorrízicos arbusculares; Fósforo; Desarrollo; Rendimiento; Arbuscular mycorrhizal fungi; Phosphorus; Development; Performance; Maestría; Edafología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/515 |
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| Lucas Santoyo, Luis Gustavo. |
| Se evaluó el efecto de la inoculación de una mezcla de hongos micorrízicos arbusculares (HMA) compuesta por Rhizophagus intraradices, Glomus albidum, Claroideoglomus claroideum, Rhizophagus diaphanus, Acaulospora laevis, Glomus sp.1, Funneliformis geosporum, Glomus sinuosum, Acaulospora denticulata, Glomus sp.2, Glomus sp.3 y Glomus sp.4 en chile guajillo (Capsicum annuum L.) fertilizado con diferentes dosis de fósforo (0, 25, 50 y 75 kg ha-1). El nitrógeno y potasio se mantuvieron constantes (230 y 150 kg ha-1 respectivamente) en todos los tratamientos. Se usó semilla proveniente de la comunidad Nigromante, Zacatecas, y suelo con bajo contenido de fósforo (5 mg kg-1 de P-Olsen) colectado en Tequexquinahuac, Estado de México. Las evaluaciones para altura... |
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Palavras-chave: Chile guajillo; Hongos micorrízicos arbusculares; Fósforo; Desarrollo; Rendimiento; Arbuscular mycorrhizal fungi; Phosphorus; Development; Performance; Maestría; Edafología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/515 |
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| Vallejo Hernández, Laura Haydée. |
| Tres dosis de enzima fitasa Ronozyme-HiPhosÒ (DSM Nutritional Products 5000 FTU g-1) (0, 540 y 720 g fitasa t-1) se evaluaron en un dieta concentrada (70% sorgo y 16.9% gluten de maíz), para determinar si la inclusión de la enzima modifica las variables de degradación y fermentación de la dieta. Muestras de dietas fueron incubadas durante 3, 6, 9, 12, 24 y 48 h, para identificar cambios en degradación in vitro de materia seca (DIVMS), pH, nitrógeno amoniacal (N-NH3), fósforo (P) en medio de incubación, producción de gas y ácidos grasos volátiles (AGV); el diseño experimental fue de bloques al azar generalizados. Además se realizó una prueba in situ, en la cual se utilizaron 6 borregos criollos (40 ± 2 kg PV) con cánula en rumen y duodeno, para determinar... |
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Palavras-chave: Fitasa; Fitato; Fósforo; Borregos; Phytase; Phytate; Phosphorus; Lambs; Ganadería; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2224 |
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| Roy, Eric D.; Department of Food, Agricultural and Biological Engineering, Ohio State University; eroy5@tigers.lsu.edu; Martin, Jay F.; Department of Food, Agricultural and Biological Engineering, Ohio State University; martin.1130@osu.edu; Irwin, Elena G.; Department of Agricultural, Environmental and Development Economics, Ohio State University; irwin.78@osu.edu; Conroy, Joseph D.; Department of Evolution, Ecology and Organismal Biology, Ohio State University; conroy.27@osu.edu; Culver, David A.; Department of Evolution, Ecology and Organismal Biology, Ohio State University; culver.3@osu.edu. |
| Together, lake ecosystems and local human activity form complex social–ecological systems (SESs) characterized by feedback loops and discontinuous change. Researchers in diverse fields have suggested that complex systems do not have single stable equilibria in the long term because of inevitable perturbation. During this study, we sought to address the general question of whether or not stable social–ecological equilibria exist in highly stressed and managed lacustrine systems. Using an integrated human–biophysical model, we investigated the impacts of a species invasion and ecosystem restoration on SES equilibrium, defined here as a compromise in phosphorus management among opposing stakeholders, in western Lake Erie. Our... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Dreissena; Ecosystem services; Invasive species; Lake Erie; Lake eutrophication; Lake management; Perturbation; Phosphorus. |
| Ano: 2010 |
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| Carpenter, Stephen R; Center for Limnology, University of Wisconsin-Madison; srcarpen@wisc.edu; Booth, Eric G.; Department of Agronomy, University of Wisconsin-Madison; Department of Civil and Environmental Engineering, University of Wisconsin-Madison; egbooth@wisc.edu; Gillon, Sean; Department of Food Systems and Society, Marylhurst University; Department of Forest and Wildlife Ecology, University of Wisconsin-Madison; sgillon@marylhurst.edu; Kucharik, Christopher J.; Department of Agronomy, University of Wisconsin-Madison; Nelson Institute Center for Sustainability and the Global Environment, University of Wisconsin-Madison; kucharik@wisc.edu; Loheide, Steven; Department of Civil and Environmental Engineering, University of Wisconsin-Madison; Loheide@wisc.edu; Mase, Amber S.; Department of Forest and Wildlife Ecology, University of Wisconsin-Madison; Mase@wisc.edu; Motew, Melissa; Nelson Center for Sustainability and the Global Environment, University of Wisconsin-Madison; Motew@wisc.edu; Qiu, Jiangxiao; Department of Zoology, University of Wisconsin-Madison; jqiu7@wisc.edu; Rissman, Adena R; Department of Forest and Wildlife Ecology, University of Wisconsin-Madison; ARRissman@wisc.edu; Seifert, Jenny; Center for Limnology, University of Wisconsin-Madison; JSeifert2@wisc.edu; Soylu, Evren; Department of Civil Engineering, Meliksah University; Nelson Institute for Sustainability and the Global Environment, University of Wisconsin-Madison; evrensoylu@gmail.com; Turner, Monica; Department of Zoology, University of Wisconsin-Madison; turnermg @ wisc.edu; Wardropper, Chloe B; Nelson Institute for Environmental Studies, University of Wisconsin-Madison; Wardropper@wisc.edu. |
| Agricultural watersheds are affected by changes in climate, land use, agricultural practices, and human demand for energy, food, and water resources. In this context, we analyzed the agricultural, urbanizing Yahara watershed (size: 1345 km², population: 372,000) to assess its responses to multiple changing drivers. We measured recent trends in land use/cover and water quality of the watershed, spatial patterns of 10 ecosystem services, and spatial patterns and nestedness of governance. We developed scenarios for the future of the Yahara watershed by integrating trends and events from the global scenarios literature, perspectives of stakeholders, and models of biophysical drivers and ecosystem services. Four qualitative scenarios were created to... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Alternative futures; Climate; Ecosystem services; Eutrophication; Governance; Lakes; Land-use change; Phosphorus; Scenarios. |
| Ano: 2015 |
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| Flueck, Werner T.; National Council for Scientific and Technical Research (CONICET), Argentina; Institute of Natural Resources Analysis, Universidad Atlantida Argentina; Swiss Tropical Institute, University of Basel; wtf@deerlab.org. |
| The exploitation of natural resources such as forests leads to sustainable forest management (SFM). The key question is how to define and parametrize “sustainable use.” Promoting forest use that conserves spatial characteristics of forest landscapes and the structure and composition of forest stands was proposed as a way of maintaining elements of biodiversity such as species richness and genetic variation. However, to establish the parameter space for sustainable forest use, it is essential to consider the nutrient requirements of forest systems, that is, plants and animals, the need for fertilizer application, and the effects on biogeochemical cycles, a cornerstone of biological evolution and, thus, biodiversity. The use of forest... |
| Tipo: Peer-Reviewed Response |
Palavras-chave: Biogeochemical cycle; Fertilizer; Macronutrients; Micronutrients; Phosphorus; Selenium; Sustainable forest management. |
| Ano: 2009 |
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| Bruno,Marcelo; Oliveira,Roberto A. de. |
| In this study it was evaluated the efficiency of the treatment of wet-processed coffee wastewater in upflow anaerobic sludge blanket (UASB) reactors in two stages, in bench scale, followed by post-treatment with activated sludge in batch. The first UASB reactor was submitted to an hydraulic retention time (HRT) of 6.2 d and organic loading rates (OLR) of 2.3 and 4.5g CODtotal (L d)-1, and the second UASB reactor to HRT of 3.1 d with OLR of 0.4 and 1.4g CODtotal (L d)-1. The average values of the affluent CODtotal increased from 13,891 to 27,926mg L-1 and the average efficiencies of removal of the CODtotal decreased from 95 to 91%, respectively, in the UASB reactors in two stages. The volumetric methane production increased from 0.274 to 0.323L CH4 (L... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anaerobic digestion; Methane; Nitrogen; Phosphorus; Phenols. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400020 |
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| Pereira,Natanael S; Alves Júnior,Antônio Roberto; Celedônio,Wilma F; Rodrigues,Esiana A; Chaves,Sérgio WP; Medeiros,José Francismar. |
| ABSTRACT Studies on nutrient uptake are important to understand nutritional needs of crops, which demand may also be influenced by fertilization management, particularly P fertilization. Thus, the aim of this study was to evaluate macronutrient accumulation and distribution in watermelon cv. Magnum, under two forms of phosphate fertilization. The experiment was carried out in a sandy-textured Argisol in Mossoró-RN. The experimental design was a randomized block design, arranged in split plot in time, with four replicates. We evaluated dose of 137 kg ha-1 of P2O5 under two forms of fertilization [pre-planting (F0) and pre-planting + topdressing (F1)]. Triple superphosphate (SFT) was used for pre-planting applications and topdressing applications were done... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrullus lanatus; Nutrient accumulation; Phosphorus. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300346 |
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| Cardoso,Antonio II; Claudio,Marina TR; Nakada-Freitas,Pâmela G; Magro,Felipe O; Tavares,Ana EB. |
| abstract Considering the scarce information on nutrient extraction by plants for seed production within vegetable crops, as well as the effect of fertilization over extraction, studying nutrient accumulation in different plant parts under varied fertilization rates is necessary. This study aimed to evaluate the influence of phosphate rates on macronutrient accumulation in cauliflower plants during seed production. Five phosphate rates were studied (0, 300, 600, 900 and 1200 kg/ha P2O5), in a randomized complete block design, with four replications. Accumulation of nutrients in the different plant parts was evaluated at the end of the cycle (vegetative and reproductive, the latter divided in seeds and inflorescence). Data were submitted to analysis of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. botritys; Phosphorus; Mineral nutrition.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000200196 |
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| Пархоменко, А. В.. |
| Рассмотрены результаты модельных расчётов экскреции неорганического фосфора зоопланктоном в глубоководной области Чёрного моря. Величины скорости экскреции фосфатов зоопланктоном в слое 0 - 150 м зимой варьировали от 2.45 до 3.29, весной - 4.25 - 8.81, летом - 7.72 - 12.39, осенью - 13.36 - 3.77 мгР·мˉ2·сутˉ¹. Количественная оценка вклада простейших, мезопланктона и желетелого макропланктона в суммарную экскрецию фосфатов указывает на ключевую роль простейших. Вклад простейших в среднем составлял - 51 %, мезопланктона - 32 %, макропланктона - 17 %. Регенерационная первичная продукция зимой изменялась от 17 до 30 %, весной - 30 - 97 %, летом - 93 - 100 %, осенью - 44 - 100 %, в среднем за год 64 %. Обсуждается вопрос о роли "микробиальной петли" в... |
| Tipo: Journal Contribution |
Palavras-chave: Фосфор; Экскреция; Скорость; Зоопланктон; Черное море; Phosphorus; Rate; Excretion; Zooplankton; Black sea Zooplankton Excretion Phosphorus Zooplankton Phosphorus Excretion http://aims.fao.org/aos/agrovoc/c_15490 http://aims.fao.org/aos/agrovoc/c_5804 http://aims.fao.org/aos/agrovoc/c_2750. |
| Ano: 2005 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/242 |
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| Registros recuperados: 225 | |
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