نتایج جستجو برای: particularly in agriculture

تعداد نتایج: 16989080  

2012
Claire M Kershaw-Young W. M. Chis Maxwell

s ..........................................................................................................................................68 Magazine and Newsletter Articles ...................................................................................................68 Appendices ...............................................................................................................

2005
Miranda M Hart Jack T Trevors

ing in the rhizosphere for decades, in the form of plant growth-promoting microorganisms. Efforts to incorporate microbial management into mainstream practices have not been successful. In fact, the same practices that increased yields in the last 50 years (namely fertilizers, herbicides, and pesticides) have largely eradicated natural rhizosphere microbes in agrosystems (Matson et al. 1997) an...

2017
Pankaj Raj Dhital

A detail study on the experience of agricultural extension in Nepal was done by discussion with experts, academicians and involved agricultural officers of Nepal along with review of different documents, books and articles on the subject matter. Since from the first effort of extension service, Training and visit, Integrated Rural Development Approach, Tuki Approach, Farming System Research and...

2005
Maria Alice Garcia Miguel A. Altieri

The potential for genetically modified (GM) crops to threaten biodiversity conservation and sustainable agriculture is substantial. Megadiverse countries and centers of origin and/or diversity of crop species are particularly vulnerable regions. The future of sustainable agriculture may be irreversibly jeopardized by contamination of in situ preserved genetic resources threatening a strategic r...

2014
John Curtis Edgar Morgenroth

This paper attributes the variation in water quality across Irish lakes to a range of contributory factors such as human population, septic tanks, urban waste water treatment, phosphorous excreted by livestock, as well as catchment soil and geology. Both linear and non-linear quadratic models were estimated in the analysis, which attempts to account for point and non-point sources of pollution ...

2017
Megan Sheahan Christopher B. Barrett

Conventional wisdom holds that Sub-Saharan African farmers use few modern inputs despite the fact that most poverty-reducing agricultural growth in the region is expected to come largely from expanded use of inputs that embody improved technologies, particularly improved seed, fertilizers and other agro-chemicals, machinery, and irrigation. Yet following several years of high food prices, conce...

2014
Remy N. Bargout

The largest demographic in India suffering from the adverse impacts of global climate change are small farmers. India’s rural population is approximately 800 million, with the majority being households dependent on small-scale agriculture. For these smallholders, facing a common rural reality of disempowerment and limited disposable household capital, the agro-ecological results of climate vola...

2011
S. J. Vermeulen P. K. Aggarwal A. Ainslie C. Angelone B. M. Campbell A. J. Challinor J. W. Hansen J.S.I. Ingram A. Jarvis P. Kristjanson C. Lau G. C. Nelson P. K. Thornton E. Wollenberg

Agriculture and food security are key sectors for intervention under climate change. Agricultural production is highly vulnerable even to 2C (low-end) predictions for global mean temperatures in 2100, with major implications for rural poverty and for both rural and urban food security. Agriculture also presents untapped opportunities for mitigation, given the large land area under crops and ran...

1999
Robert Mendelsohn Ariel Dinar

Because most developing countries depend heavily on agriculture, the effects of global warming on productive croplands are likely to threaten both the welfare of the population and the economic development of the countries. Tropical regions in the developing world are particularly vulnerable to potential damage from environmental changes because the poor soils that cover large areas of these re...

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