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| Registros recuperados: 202 | |
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| Enrique Meseth; National Sun Yat-Sen University; Jason C.S. Yu; National Sun Yat-Sen University, Department of Marine Environment and Engineering, Lien-Hai Road 70, 80424 Kaohsiung, Taiwan. |
| The current work is aimed to improve the water management for agriculture, by applying efficient crop schedules in Vilcabamba -and similar areas of the Andean highland forest-, which can satisfy most of the water requirements with rainfed irrigation and maximise the crops yield. For this purpose, two field practices were carried out during the dry (September 2012) and wet season (February 2013) to measure rivers and canals flows with the velocity/area method. Nineteen soil samples were collected on-site and analysed, presenting prevalent sandy loam and loam textures. Cropwat programme and data on climate, crops and soil were used to estimate crop water requirements and scheme irrigation requirements, indicating that crop evapotranspiration is low due to... |
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Palavras-chave: Water management; Irrigation requirements Crop scheduling crop water requirements rainfed irrigation water management for agriculture Cropwat. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2750 |
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| Santos,Irai Manuela Santana; Santos Júnior,Pedro Pereira; Silva,Rodrigo Rafael da; Oliveira,Gertrudes Macário de; Queiroz,Sérgio Oliveira Pinto de. |
| ABSTRACT This study’s objective was to assess the response and effectiveness of irrigation management systems for the production of bell pepper with different agricultural substrates, under protected conditions. The current study was conducted in a greenhouse located in Juazeiro, BA, in the northwest of Brazil. The experiment design was completely randomized in a split-plot system, with two irrigation treatments as the main plots (the drainage lysimeter and the Piché evaporimeter) and two substrates in each sub-plot (coconut fiber and pinus bark), with 5 replications per treatment. Harvest was conducted from 86 to 151 days after transplanting, and the following characteristics were evaluated: total, marketable and unmarketable yields, production per plant,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Water management; Evapotranspiration. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000300510 |
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| Ohashi,Augusto Yukitaka Pessinatti; Pires,Regina Célia de Matos; Ribeiro,Rafael Vasconcelos; Silva,André Luiz Barros de Oliveira. |
| Despite of the agronomic importance for water management, few studies of sugarcane roots have been performed under field conditions during the crop cycle. The aim of this study was to determine the cumulative root density (LA), root distribution on soil profile and the effective rooting depth (ERD) for three sugarcane cultivars using the minirhizotron method. A field experiment was done with sugarcane cultivars IACSP94-2094, IACSP94-2101 and SP79-1011 grown under subsurface drip fertigation. Soil chemical and physical characteristics were also evaluated. Root evaluations were taken at 38, 58, 123, 185 and 205 days during the second ratoon, considering the soil profile until 0.8 m depth. The highest LA and root growth rates were found up to 0.4 m soil layer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum spp.; Irrigation; Water management; Effective rooting depth; Root growth rate. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000200131 |
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| Colauto,Nelson Barros; Silveira,Adriano Reis da; Eira,Augusto Ferreira da; Linde,Giani Andrea. |
| This study aimed to verify the biological efficiency and production flushes of Agaricus blazei strains on different casing layers during 90 cultivation days. Four casing layers were used: mixture of subsoil and charcoal (VCS), lime schist (LSC), São Paulo peat (SPP) and Santa Catarina peat (SCP); and two genetically distant A. blazei strains. The fungus was grown in composted substratum and, after total colonization, a pasteurized casing layer was added over the substratum, and fructification was induced. Mushrooms were picked up daily when the basidiocarp veil was stretched, but before the lamella were exposed. The biological efficiency (BE) was determined by the fresh basidiocarp mass divided by the substratum dry mass, expressed in percentage. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Production flush; Agaricus brasiliensis; Casing layer; Water management; Agaricus subrufescens. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200026 |
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| Holzapfel,Eduardo A; Pannunzio,Alejandro; Lorite,Ignacio; Silva de Oliveira,Aureo; Farkas,István. |
| Irrigation systems should be a relevant agent to give solutions to the increasing demand of food, and to the development, sustainability and productivity of the agricultural sector. The design, managing, and operation of irrigation systems are crucial factors to achieve an efficient use of the water resources and the success in the production of crops and orchards. The aim of this paper is to analyze knowledge and investigations that enable to identify the principal criteria and processes that allow improving the design and managing of the irrigation systems, based on the basic concept that they facilitate to develop agriculture more efficient and sustainable. The design and managing of irrigation systems must have its base in criteria that are relevant,... |
| Tipo: Journal article |
Palavras-chave: Irrigation; Design; Water management; Operation systems. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000500003 |
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| Bilibio,Carolina; Carvalho,Jacinto de Assunção; Hensel,Oliver; Richter,Uwe. |
| Effects of different levels of water deficit applied during rapeseed crop development were assessed in a trial with metallic pots in greenhouse at the Department of Agricultural Engineering of Kassel University, Witzenhausen, Germany. A randomized block design was used with one cultivar (Ability Summer Rape) and three levels of water deficit (0, 30, and 60% of evapotranspiration) in three treatments and 20 replicates. Irrigation management was carried out through daily water balance, where ET = I - D; ET: evapotranspiration; I: irrigation; and D: drainage. The following evaluations were carried out weekly: stem diameter (mm); plant height (cm); number of leaves; number of branches and number of pods. At the end of the experiment, assessed total green... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water management; Irrigation; Water deficit. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000400005 |
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| Reuss, Martin; U.S. Army Corps of Engineers; Martin.A.Reuss@HQ02.USACE.ARMY.MIL. |
| River ecologists are also river-basin planners. However, their role in planning has developed slowly over the decades since the beginning of the 20th century. Three major factors explain this phenomenon. First, ecologists focused on plant and animal communities rather than on broader policy issues related to land settlement and water development. Second, the federal government, and most state and local governments as well, used mainly economic criteria to justify projects. Intangible benefits, including the value of species or an aesthetically pleasing landscape, drew relatively little attention. Third, the public generally favored development, especially during the Great Depression of the 1930s. Only after World War II did the public's position shift in... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: History; Ecology; River basins; Water management; Planning; Benefit-cost analysis; Multiobjective planning; River restoration; Geomorphology. |
| Ano: 2005 |
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| Brouwer, Stijn; VU University Amsterdam, Institute for Environmental Studies (IVM); stijn.brouwer@ivm.vu.nl; Biermann, Frank; VU University Amsterdam, Institute for Environmental Studies (IVM); frank.biermann@ivm.vu.nl. |
| The growing awareness of the complexities and uncertainties in water management has put into question the existing paradigms in this field. Increasingly more flexible, integrated, and adaptive policies are promoted. In this context, the understanding of how to effect policy change is becoming more important. This article analyzes policy making at the micro level, focusing on the behavior of policy entrepreneurs, which we understand here as risk-taking bureaucrats who seek to change policy and are involved throughout the policy-change process. Policy entrepreneurs have received a certain level of attention in the adaptive co-management literature and the policy sciences in past decades. Yet, the understanding of the actions they can take to facilitate... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Adaptive management; Policy change; Policy entrepreneurs; Strategies; Water management; Windows of opportunity. |
| Ano: 2011 |
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| Kovacs, Eszter K.; Department of Geography, University of Cambridge, UK ; ek334@cam.ac.uk; Kumar, Chetan; Global Forest and Climate Change Program, IUCN, Washington, D.C., USA; Chetan.KUMAR@iucn.org; Agarwal, Chetan; Center for Ecology Development and Research, India; chetan_agarwal1@hotmail.com; Adams, William M.; Department of Geography, University of Cambridge, UK; wa12@cam.ac.uk; Hope, Robert A.; School of Geography and Environment and Smith School of Enterprise and the Environment, Oxford University, UK; robert.hope@ouce.ox.ac.uk; Vira, Bhaskar; Department of Geography, University of Cambridge, UK; University of Cambridge Conservation Research Institute (UCCRI); bv101@cam.ac.uk. |
| In this paper, we examine the on-the-ground realities of upstream-downstream negotiations and transactions over ecosystem services. We explore the engagement, negotiation, implementation, and postimplementation phases of a “reciprocal water access” (RWA) agreement between village communities and municipal water users at Palampur, Himachal Pradesh, India. We aim to highlight how external actors drove the payments for ecosystem services agenda through a series of facilitation and research engagements, which were pivotal to the RWA’s adoption, and how the agreement fared once external agents withdrew. In the postimplementation period, the RWA agreement continues to be upheld by upstream communities amidst evolving, competing... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: India; Negotiations; Payments for ecosystem services; Water management. |
| Ano: 2016 |
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| Cutts, Bethany B. ; School of Life Sciences, Arizona State University; Decision Center for a Desert City, Arizona State University; bcutts@asu.edu; Larson, Elisabeth K. ; School of Life Sciences, Arizona State University; eklarson@asu.edu; Darby, Kate J.; School of Human Evolution and Social Change, Arizona State University; Kate.Darby@asu.edu; Neff, Mark; Consortium for Science, Policy and Outcomes, Arizona State University ; Mark.Neff@asu.edu; Wutich, Amber; School of Human Evolution and Social Change, Arizona State University; Amber.Wutich@asu.edu; Bolin, Bob; School of Human Evolution and Social Change, Arizona State University; Bob.Bolin@asu.edu. |
| The need to develop successful collaborative strategies is an enduring problem in sustainable resource management. Our goal is to evaluate the relationship between information networks and conflict in the context of collaborative groundwater management in the rapidly growing central highland region of Arizona. In this region, water-management conflicts have emerged because of stakeholders’ differing geographic perspectives and competing scientific claims. Using social network analyses, we explored the extent to which the Verde River Basin Partnership (VRBP), which was charged with developing and sharing scientific information, has contributed to collaboration in the region. To accomplish this, we examined the role that this stakeholder... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Arizona; Boundary spanning; Collaborative management; Environmental governance; Information networks; Power; Water management. |
| Ano: 2010 |
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| Registros recuperados: 202 | |
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