Download or read book Modeling Water and Salt Dynamics Under Irrigated Cotton with Shallow Groundwater in the Khorezm Region of Uzbekistan written by Irina Forkutsa and published by . This book was released on 2006 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Water Conservation written by Saskia Keesstra and published by MDPI. This book was released on 2019-04-11 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human needs like food and clean water are directly related to good maintenance of healthy and productive soils. A good understanding of human impact on the natural environment is therefore necessary to preserve and manage soil and water resources. This knowledge is particularly important in semi-arid and arid regions, where the increasing demands on limited water supplies require urgent efforts to improve water quality and water use efficiency. It is important to keep in mind that both soil and water are limited resources. Thus, wise use of these natural resources is a fundamental prerequisite for the sustainability of human societies. This book collects 15 original scientific contributions addressing the state of the art of soil and water conservation research. Contributions cover a wide range of topics, including (1) recovery of soil hydraulic properties; (2) erosion risk; (3) novel modeling, monitoring and experimental approaches for soil hydraulic characterization; (4) improvement of crop yields; (5) water availability; and (6) soil salinity. This collection provides more insights into conservation strategies for effective and sustainable soil and water management.
Download or read book Ecophysiological Diversity of Wild Arabica Coffee Populations in Ethiopia written by Taye Kufa Obso and published by Cuvillier Verlag. This book was released on 2006 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coffea arabica, one of the economically most important crops worldwide, occurs naturally in the undergrowth of montane rainforests of Ethiopia. The study provides the first detailed ecophysiological investigations of wild coffee populations. It demonstrates the inter- and intra-regional variability in phenotypic and hydrological characteristics of wild coffee. The results reveal very different strategies of wild coffee seedlings for coping with drought stress. The ecophysiological diversity shows the importance of Ethiopian wild coffee populations as gene pools for future breeding programs, and underlines the need for an in-situ conservation strategy. The study includes recommendations for coffee forest management and the use of wild arabica coffee in Ethiopia.
Download or read book Management of Bombus Atratus Bumblebees to Pollinate Lulo Solanum Quitoense L a Native Fruit from the Andes of Colombia written by Maria Teresa Almanza Fandiño and published by Cuvillier Verlag. This book was released on 2007 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solanum quitoense (Lulo) from the northern Andes is a fruit with an attractive taste. It has a high export potential but its production is hampered by insufficient pollination. Studies on the reproductive system of Lulo revealed that, due to their poricidal anthers, the flowers need pollinators for self- and cross-pollination. Pollination by native bumblebees significantly increases fruit set and quality. Experiments show that colonies of Bombus atratus can be reared in captivity and used in Lulo fields for providing increased pollination services. Modeling based on data on colony development reveal larva/workers ratio and the supply of pollen as main parameters for improving the rearing method.
Download or read book Genetic Diversity of Wild Coffea Arabica Populations in Ethiopia as a Contribution to Conservation and Use Planning written by Kassahun Tesfaye Geletu and published by Cuvillier Verlag. This book was released on 2006 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microsatellite Development and Application in Pigeonpea Cajanus Cajan L Millspaugh written by Damaris Achieng Odeny and published by Cuvillier Verlag. This book was released on 2006 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cotton Water Salts and Soums written by Christopher Martius and published by Springer Science & Business Media. This book was released on 2011-09-18 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes a long-term research project addressing land and water use in the irrigated areas of the Aral Sea basin. In an interdisciplinary approach, natural and human sciences are combined to elucidate the challenges of economic transition that affect the use of land, water and biological resources, ecological sustainability, economic efficiency and the livelihoods of the local population. The research focuses on Khorezm, a region in Uzbekistan, located on the Amudarya river, in the heart of Central Asia. A series of chapters describes the biophysical environment and the aspects of society and institutions that shape land and water use. The book discusses options and tools to improve land and water management, and to reform the economic system management, based on agronomic, hydrological, economic ans social studies and modeling. The insights are not only important for Uzbekistan, but for all countries in transitions and irrigated dryland areas elsewhere.
Download or read book Restructuring land allocation water use and agricultural value chains written by John P. A. Lamers and published by V&R Unipress. This book was released on 2015-01-28 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Central Asia underwent an agricultural transformation in the 20th century that was neither efficient nor sustainable. There is a need for innovations that will remedy these deficits by reversing environmental degradation and ensuring poverty alleviation. This book provides science-based findings and recommendations for restructuring land and water use and agricultural value chains to enable ecologically and economically sound practices that increase resource use efficiency, rehabilitate ecosystem functions, and enhance rural incomes. Innovations were designed in concert with stakeholders. The prospective benefits are shown for the Khorezm region, part of the lower Amudarya region, Uzbekistan, but the findings can be extrapolated to regions facing similar agro-ecological challenges.
Download or read book Integrated Water Resources Management Concept Research and Implementation written by Dietrich Borchardt and published by Springer. This book was released on 2016-04-19 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the concept, contemporary research efforts and the implementation of Integrated Water Resources Management (IWRM). The IWRM concept was established as an international guiding water management paradigm in the early 1990ies and has become a vital approach to solving the problems associated with the topic of water. The book summarizes fourteen comprehensive IWRM research projects with worldwide coverage and analyses their motivations, settings, approaches and implementation of results. Aiming to be an up-to-date interdisciplinary scientific reference, this book provides a comprehensive theoretical and empirical analysis of contemporary IWRM research, examples of science based implementations and a synthesis of the lessons learnt. It concludes with some major future challenges, the solving of which will further strengthen the IWRM concept.
Download or read book Integrated Water Resources Management in a Changing World written by Dietrich Borchardt and published by IWA Publishing. This book was released on 2013-06-14 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a selection of the main contributions made to the international conference on Integrated Water Resources Management (IWRM) entitled ‘Management of Water in a Changing World: Lessons Learnt and Innovative Perspectives’ that was held from 12 to 13 October 2011 in Dresden, Germany. The book summarise the main messages issuing from the conference and contains selected papers which were presented during the conference, either as keynote lectures in plenary sessions or as submitted papers in one of the thematic sessions. The key themes of the book are: Water resources in changing environments Groundwater management Technologies and implementation Water management indicators at different scales Information and decision support systems Water governance: actors and institutions The book provides an overview on important issues concerning the conceptual framework of integrated water resources management (IWRM). All presentations and abstracts and the corresponding PowerPoint presentations as well as a video recording of the panel discussion are available at the conference website http://www.bmbf.iwrm2011.de. Readers are encouraged to complete their review of the conference and its messages by consulting this interesting on-line source of accompanying scientific material.
Download or read book Modeling the Effects of Saline Groundwater and Irrigation Water on Root Zone Salinity and Sodicity Dynamics in Agro ecosystems written by Syed Hamid Hussain Shah and published by . This book was released on 2013 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use and Duty of Water in the Salt River Valley written by James C. Marr and published by . This book was released on 1927 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Root Zone Salinity Management Using Fractional Skimming Wells With Pressurized Irrigation Farmers skimming well technologies Practices problems perceptions and prospects written by Muhammad Mazhar Saeed and published by IWMI. This book was released on 2001 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the short water supply environment of Pakistan, farmers try to minimize the gap between demand and supply of canal water extracting groundwater for irrigation purposes. However, saline groundwater upconing may occur in response to fresh groundwater withdrawals from unconfined aquifer underlain by salty groundwater. Skimming well technology can help controlling this upconing phenomenon. However, in most cases, the small discharges of such wells cannot be efficiently applied on surface irrigated croplands. Pressurized irrigation application systems use small discharge effectively, but the cost and availability of equipment in the local market is a significant constraint. Root zone salinity is also expected to increase if this skimmed groundwater is used for irrigation purposes, particularly in the absence of proper salinity management practices. To address these issues, International Water Management Institute (IWMI), and Water Resource Research Institute (WRRI) of National Agricultural Research Centre (NARC), Mona Reclamation Experimental Project (MREP) of Water and Power Development Authority (WAPDA) are collaborating to undertake an applied research under the Project, Root Zone Salinity Management Using Fractional Skimming Wells with Pressurized Irrigation.
Download or read book Dynamics of Salt and Water Uptake from Soil and Shallow Groundwater by Vegetation written by Nikolaj Feldbech Rasmussen and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling of Salt and Water Movement in Irrigated Soils written by Smithsonian Science Information Exchange and published by . This book was released on 1976 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Salt and Water Dynamics Beneath a Tree Plantation Growing on a Shallow Watertable written by Albertus Frederik Heuperman and published by . This book was released on 1995 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Economics of Land Degradation and Improvement A Global Assessment for Sustainable Development written by Ephraim Nkonya and published by Springer. This book was released on 2015-11-11 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume deals with land degradation, which is occurring in almost all terrestrial biomes and agro-ecologies, in both low and high income countries and is stretching to about 30% of the total global land area. About three billion people reside in these degraded lands. However, the impact of land degradation is especially severe on livelihoods of the poor who heavily depend on natural resources. The annual global cost of land degradation due to land use and cover change (LUCC) and lower cropland and rangeland productivity is estimated to be about 300 billion USD. Sub-Saharan Africa (SSA) accounts for the largest share (22%) of the total global cost of land degradation. Only about 38% of the cost of land degradation due to LUCC - which accounts for 78% of the US$300 billion loss – is borne by land users and the remaining share (62%) is borne by consumers of ecosystem services off the farm. The results in this volume indicate that reversing land degradation trends makes both economic sense, and has multiple social and environmental benefits. On average, one US dollar investment into restoration of degraded land returns five US dollars. The findings of the country case studies call for increased investments into the rehabilitation and restoration of degraded lands, including through such institutional and policy measures as strengthening community participation for sustainable land management, enhancing government effectiveness and rule of law, improving access to markets and rural services, and securing land tenure. The assessment in this volume has been conducted at a time when there is an elevated interest in private land investments and when global efforts to achieve sustainable development objectives have intensified. In this regard, the results of this volume can contribute significantly to the ongoing policy debate and efforts to design strategies for achieving sustainable development goals and related efforts to address land degradation and halt biodiversity loss.
