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النتائج 71 - 80 من 213
Climate and Security in Asia and the Pacific (Food, Water and Energy) النص الكامل
2014
Heath, L. | Salinger MJ | Falkland T | Hansen, James | Jiang K | Kameyama Y | Kishi, M. | Meinke, Holger | Morton K | Nikitina, E. | Shukla PR | White I
The impacts of increasing natural climate disasters are threatening food security in the Asia-Pacific region. Rice is Asia’s most important staple food. Climate variability and change directly impact rice production, through changes in rainfall, temperature and CO2 concentrations. The key for sustainable rice crop is water management. Adaptation can occur through shifts of cropping to higher latitudes and can profit from river systems (via irrigation) so far not considered. New opportunities arise to produce more than one crop per year in cooler areas. Asian wheat production in 2005 represents about 43 % of the global total. Changes in agronomic practices, such as earlier plant dates and cultivar substitution will be required. Fisheries play a crucial role in providing food security with the contribution of fish to dietary animal protein being very high in the region – up to 90 % in small island developing states (SIDS). With the warming of the Pacific and Indian Oceans and increased acidification, marine ecosystems are presently under stress. Despite these trends, maintaining or enhancing food production from the sea is critical. However, future sustainability must be maintained whilst also securing biodiversity conservation. Improved fisheries management to address the existing non-climate threats remains paramount in the Indian and Pacific Oceans with sustainable management regimes being established. Climate-related impacts are expected to increase in magnitude over the coming decades, thus preliminary adaptation to climate change is valuable.
اظهر المزيد [+] اقل [-]Arab Development Symposium I : Food and Water Security in the Arab World
2014
Rouis, Mustapha | Limam, Imed
Recognizing the importance of policy debate and knowledge sharing in the field of development, the Arab Fund for Economic and Social Development and the World Bank (Middle East and North Africa Region) agreed in March 2010 to hold joint high-level development seminars around issues pertaining to the Arab World. These were to be known as the Arab Development Symposia (ADS) and will be held on a regular basis, every 18 months or so, at the Arab Fund premises in Kuwait. The goal was to provide an opportunity for policymakers, practitioners and academicians to share ideas and experiences on topics which are high on the Arab development agenda. As such, the ADS series complement other fora for research and knowledge sharing and dissemination such as the Economic Research Forum (ERF) and the Research Initiative for Arab Development (RIAD).
اظهر المزيد [+] اقل [-]Multiple use of upper catchments: toward a research agenda for Subtheme Two of the Challenge Program on water and food. Challenge Program on Water and Food background paper 2 النص الكامل
2014
frits w.t. penning de vries | olaf westermann | nancy l. johnson | n. sanz | h. schreier | v. gottriet | christian valentin | simon e. cook | nathalie beaulieu | helle munk ravnborg | s.p. wani | m. mulligan | b.m. swallow
Simon E. Cook et al., 'Multiple use of upper catchments: toward a research agenda for Subtheme Two of the Challenge Program on water and food. Challenge Program on Water and Food background paper 2', 2014
اظهر المزيد [+] اقل [-]The institutional history of the CGIAR Challenge Program on Water and Food [CPWF].
2014
Pukinskis, Ilse
Rebalancing our food production systems: sustainable intensification through water, land and ecosystems lens النص الكامل
2014
a.d. noble
A.D. Noble, 'Rebalancing our food production systems: sustainable intensification through water, land and ecosystems lens', International Water Management Institute (WIMI). CGIAR Research Program on Water, Land and Ecosystems (WLE), 2014
اظهر المزيد [+] اقل [-]Water for food, livelihoods and nature: Simulations for policy dialogue in South Africa النص الكامل
2014
hilmy sally | a. kamara
A. Kamara, Hilmy Sally, 'Water for food, livelihoods and nature: Simulations for policy dialogue in South Africa', 2014
اظهر المزيد [+] اقل [-]Growing more food with less water: how can revitalizing Asia?s irrigation help? النص الكامل
2014
colin j. chartres | aditi mukherji | s david | t. facon
Aditi Mukherji, T. Facon, S David, Colin J. Chartres, 'Growing more food with less water: how can revitalizing Asia?s irrigation help?', 2014 | Irrigation has always played a central role in the agrarian economy of Asia, from supporting famed hydraulic civilizations in the ancient past to spearheading Green Revolution in the 1960s and 1970s,. Asia accounts for 70% of the world?s irrigated area and is home to some of the oldest and largest irrigation schemes. While these irrigation schemes played an important role in ensuring food security for billions of people in the past, their current state of affairs leaves much to be desired. The purpose of this paper is analyze the current trends in irrigation in Asia and suggest ways and means for revitalizing irrigation for meeting our future food needs and fuelling agricultural growth. The paper recommends a five pronged approach for revitalizing Asia?s irrigation and provides region specific strategies for the same. The underlying principal of these multiple strategies is the belief that the public institutions at the heart of irrigation management in Asia need to give up comfortable rigidity and engage with individual users? needs and the demands placed by larger societal changes
اظهر المزيد [+] اقل [-]Water, food, livelihoods and environment: maintaining biodiversity in irrigated landscapes. Draft discussion paper النص الكامل
2014
rebecca e. tharme | iskandar abdullaev | ranjitha puskur | s david
S David, Rebecca E. Tharme, Iskandar Abdullaev, Ranjitha Puskur, 'Water, food, livelihoods and environment: maintaining biodiversity in irrigated landscapes. Draft discussion paper', 2014
اظهر المزيد [+] اقل [-]Towards the More Efficient Use of Water and Nutrients in Food Legume Cropping النص الكامل
2014
n. p. saxena | masood ali | r. dahan | j. p. mishra
Nutrient imbalance and soil moisture stress are the major abiotic constraints limiting productivity of cool season food legumes. These constraints are more pronounced in the semi-arid tropics and sub-tropics which are the principal production zones of chickpea, lentil and faba bean. The legumes are generally grown on residual moisture as a mono crop and consequently face drought especially during the reproductive phase. In recent years, chickpea, lentil, peas and faba bean have been grown in some areas with an irrigated/assured water supply under intensive cropping to sustain cereal based systems. An increased water supply favourably influences productivity in dry environments. Faba bean, French beans and peas show a relatively better response to irrigation. The pod initiation stage is considered most critical with respect to moisture stress. Excessive moisture often has a negative effect on podding and seed yield. Eighty to ninety percent of the nitrogen requirements of leguminous crops is met from N2 fixation hence a dose of 15?25 kg N ha-1 has been recommended. However, in new cropping systems like rice-chickpea, higher doses of 30?40 kg N ha-1 are beneficial. Phosphorus deficiency is wide spread and good responses occur to 20 to 80 kg P2O5 ha-1, depending on the nutrient status of soil, cropping systems and moisture availability. Response to potassium application is localized. The use of 20?30 kg S ha-1 and some of the micronutrients such as Zn, B, Mo and Fe have improved productivity. Band placement of phosphatic fertilizers and use of bio-fertilizers has enhanced the efficiency of applied as well as native P. Foliar applications of some micronutrients have been effective in correcting deficiencies. Water use efficiency has been improved with some management practices such as changed sowing time, balanced nutrition, mulching and tillage | Masood Ali, R. Dahan, J. P. Mishra, N. P. Saxena, 'Towards the More Efficient Use of Water and Nutrients in Food Legume Cropping', Linking Research and Marketing Opportunities for Pulses in the 21st Century, vol. 34, pp.355-368, Springer Netherlands, 2014
اظهر المزيد [+] اقل [-]Longevity of Mass-Produced Bactrocera tryoni (Diptera: Tephritidae) Held without Food or Water
2014
Dominiak, Bernard C. | Sundaralingam, Selliah | Jiang, Laura | Nicol, Helen I.
The sterile insect technique is used to manage or control fruit flies throughout the world. The technique relies on large scale production before delivery to release managers. As part of the mass production phase, there are many quality control tests to demonstrate and maintain high quality pupae and flies. One highly desirable characteristic is adults with a long life so that these adults can reach sexual maturity and sterile males mate with wild fertile flies in the field and thus produce no viable offspring. Originally longevity was assessed allowing adults to have unlimited access to food and water. As quality and longevity increased, this methodology added significantly to workload and space demands and many facilities moved to testing longevity under stress where no food or water was provided. Here we examined >27,000 Queensland fruit fly Bactrocera tryoni (Froggatt) from 160 weekly production batches from July 2004 to October 2009 where flies were not provided food or water. The mean longevity was 54.4 ± SE hours. Longevity was significantly shorter from August to March, and the longevity was significantly longer in June. Longevity was not related to pupal weight, contrary to expectations. Weights were significantly lower in June and highest in summer.
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