خيارات البحث
النتائج 141 - 150 من 5,572
Water Management for Sustainable Food Production النص الكامل
2020
Narayanan Kannan | Aavudai Anandhi
The agricultural community has a challenge of increasing food production by more than 70% to meet demand from the global population increase by the mid-21st century. Sustainable food production involves the sustained availability of resources, such as water and energy, to agriculture. The key challenges to sustainable food production are population increase, increasing demands for food, climate change, and climate variability, decreasing per capita land and water resources. To discuss more details on (a) the challenges for sustainable food production and (b) mitigation options available, a special issue on “Water Management for Sustainable Food Production” was assembled. The special issue focused on issues such as irrigation using brackish water, virtual water trade, allocation of water resources, consequences of excess precipitation on crop yields, strategies to increase water productivity, rainwater harvesting, irrigation water management, deficit irrigation, and fertilization, environmental and socio-economic impacts, and irrigation water quality. Articles covered several water-related issues across the U.S., Asia, Middle-East, Africa, and Pakistan for sustainable food production. The articles in the special issue highlight the substantial impacts on agricultural production, water availability, and water quality in the face of increasing demands for food and energy.
اظهر المزيد [+] اقل [-]Water prices, environment, and food security النص الكامل
2014
xueliang cai | mark w. rosegrant
Mark W. Rosegrant, Xueliang Cai, 'Water prices, environment, and food security', 2014
اظهر المزيد [+] اقل [-]Cryptosporidium: Detection in water and food النص الكامل
2010
Smith, H. V. (Huw V) | Nichols, Rosely A.B.
Water and food are major environmental transmission routes for Cryptosporidium, but our ability to identify the spectrum of oocyst contributions in current performance-based methods is limited. Determining risks in water and foodstuffs, and the importance of zoonotic transmission, requires the use of molecular methods, which add value to performance-based morphologic methods. Multi-locus approaches increase the accuracy of identification, as many signatures detected in water originate from species/genotypes that are not infectious to humans. Method optimisation is necessary for detecting small numbers of oocysts in environmental samples consistently, and further work is required to (i) optimise IMS recovery efficiency, (ii) quality assure performance-based methods, (iii) maximise DNA extraction and purification, (iv) adopt standardised and validated loci and primers, (v) determine the species and subspecies range in samples containing mixtures, and standardising storage and transport matrices for validating genetic loci, primer sets and DNA sequences.
اظهر المزيد [+] اقل [-]Managing water for food self-sufficiency
2006
Oduor, Alex R. | Malesu, Maimbo M.
Water source of the food security
2002
Singh, A.K. | Gautam, R.C. (Indian Agricultural Research Institute, New Delhi (India))
In irrigated as well as in rainfed areas, it is essential to work on the increase in water/ moisture-use efficiency of the crops. Since water is precious, suitable methods of irrigation and in-situ moisture conservation practices are to be adopted by the farmers on the basis of the suggestions made by the agricultural scientists of the country. In rainfed areas, suitable tillage can play a significant role in the conservation of moisture. Selection of crops and their varieties, fertilizer management and proper methods of sowing are the factors for increasing the moisture-use-efficiency and productivity. Methods of irrigations are to be modified in irrigated areas mainly to check the unnecessary loss of water.
اظهر المزيد [+] اقل [-]Dialogue on Water, Food, and Environment
2002
With reference to the world.
اظهر المزيد [+] اقل [-]Water quality for the food industry
2000
Dawson, David
Water for food and rural development
2000
Mollinga, Peter P.
This is a discussion of the issues surrounding water resource development and management in South Asia, namely, which innovative approaches and methodologies can help resolve the deadlock in water resources development and management?
اظهر المزيد [+] اقل [-]Microbiological analysis of food and water
1999
Lightfoot, N. F. (Nigel F.) | Maier, E. A.
Water for Food - The Continuing Debate النص الكامل
1997
Meyer, Wayne Stewart | School of Earth and Environmental Sciences
Wayne S. Meyer
اظهر المزيد [+] اقل [-]