Showing 191 - 200 of 23,473
The countries Kenya, Uganda, Somalia, Ethiopia and Djibouti are facing the worst food crisis of the 21st century as a result of devastating droughts. The crisis is causing starvation and leading to a lack of access to clean water and sanitation for over 12 million people. Not only are the direct...
Persistent link: https://www.econbiz.de/10009294863
In this review, we present the recent developments and future prospects of improving nitrogen use efficiency (NUE) in crops using various complementary approaches. These include conventional breeding and molecular genetics, in addition to alternative farming techniques based on no-till...
Persistent link: https://www.econbiz.de/10009295102
Organic and low-input agriculture needs flexible varieties that can buffer environmental stress and adapt to the needs of farmers. We implemented an experiment to investigate the evolutionary capacities of a sample of spinach (<em>Spinacia oleracea</em> L.) population varieties for a number of phenotypic...
Persistent link: https://www.econbiz.de/10009317921
The revitalization of the Rogun hydropower station project and launch of an Initial Public Offering has led the water-energy disputes between Tajikistan and Uzbekistan to a new stage. While two riparian states advocate their positions from their own perspective, it gives the impression of being...
Persistent link: https://www.econbiz.de/10009317922
Many issues relating to the sustainability of environmental resource use are informed by environmental valuation studies with stated preference surveys. Within these, researchers often provide descriptions of <em>status quo </em>conditions which may differ from those perceived by respondents. Ignoring...
Persistent link: https://www.econbiz.de/10009317923
The history of maize breeding methods in the USA is reviewed to examine the question of types of maize cultivars in sustainable agriculture. The yield potential of OP cultivars was much higher than national average yields prior to 1930, but hybrid cultivars today often out-yield OP cultivars by...
Persistent link: https://www.econbiz.de/10009317924
Independent of the left-right model of ideological structure, genetically modified organisms (GMOs) in food and agriculture are resented across the political spectrum in Switzerland. In the absence of any real experience with genetically modified (GM) food but faced with continuous exposure to...
Persistent link: https://www.econbiz.de/10009317925
At the turn of the millennium, the world’s political leadership adopted sustainable development as a leading model for societal development. However, the terms “sustainable development”, “sustainability” and “sustainable” are sometimes over- and misused despite wide consensus about...
Persistent link: https://www.econbiz.de/10009318027
Energy Return on Investment (EROI) refers to how much energy is returned from one unit of energy invested in an energy-producing activity. It is a critical parameter for understanding and ranking different fuels. There were a number of studies on EROI three decades ago but relatively little work...
Persistent link: https://www.econbiz.de/10009320187
World population is projected to reach its maximum (~10 billion people) by the year 2050. This 45% increase of the current world population (approaching seven billion people) will boost the demand for food and raw materials. However, we live in a historical moment when supply of phosphate,...
Persistent link: https://www.econbiz.de/10009320188