منابع مشابه
Indirect N 2 O Emissions from Agriculture
Agricultural perturbations to the global nitrogen cycle, directly and indirectly, lead to enhanced biogenic production of nitrous oxide (N2O). Direct pathways include microbial nitrification and denitrification of fertiliser and manure nitrogen that remains in agricultural soils or animal waste management systems. Indirect pathways involve nitrogen that is removed from agricultural soils and an...
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Background: Women in working life have received considerable attention in last few years, this appears to influence the health, sexual and reproductive health (SRH) of women as manifested both in the work place and their family life. Global studies demonstrated that one of the major issues confronting women is health and SRH.The most important Priorities women at work place should be promotion ...
متن کاملFood and agriculture Chemicals for agriculture
Agricultural production relies heavily on manmade chemicals used as fertilizers and pesticides, and to regulate plant growth. Pesticides are released intentionally into the environment to control insects, weeds, plant diseases and other pests that affect crop or animal production, as well as to control insects that spread human diseases. Pesticides have a well-established role in agriculture an...
متن کاملOrganic agriculture cannot replace conventional agriculture
In this paper, we consider the effect of increasing the area of agricultural land under organic practises. We assumed that organic agriculture does not have effective means of pathogen control. We model pathogen dispersal with a diffusive logistic equation in which the growth/death rate is spatially heterogeneous. We find that if the ratio of the organic plots to conventional plots is below a c...
متن کاملMultifunctional Agriculture: Agriculture Renewal as a Modern Paradigm for Agriculture and Rural Development
Multifunctional agriculture (MFA) has emerged as a key concept in science and politics with respect to the future of agriculture and rural development in the recent decade. Overall, MFA implies that in addition to their main function in production and support of rural livelihood, the agricultural activities have some other advantages for the environment including the conservation of water and s...
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ژورنال
عنوان ژورنال: Science
سال: 1965
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.147.3660.932