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Volume 6 Advances in Crop Science and Technology
ISSN: 2329-8863 Agri World 2018
March 05-07, 2018
Page 34
conferenceseries.com
11th World Congress on
March 05-07, 2018 | Paris, France
Plant Biotechnology and Agriculture
Fabienne Trolard, Adv Crop Sci Tech 2018, Volume 6
DOI: 10.4172/2329-8863-C1-004
How to address sustainability in agriculture?
In the world, agriculture developed 10,000 years ago, most of plant and animal species of man’s interest have been domesticated.
Today's agriculture still relies almost exclusively on these same species. According to global changes and the challenges of food
security, scientists are being questioned by decision-makers and stakeholders in the territories on the sustainability of agro-
systems. Valuable information on this topic and recommendations can be derived from the study of practices and processes
related to agriculture over time. Long-time (up to 1,000 years), middle-time (around 50-60 years) and short-time (one hour
to 3-4 months) studies illustrate hereafter the field of possibilities to produce this information. In the first example, the period
from 4500 years BP till date was explored by the help of palynological determinations of pollens extracted from a continuous
720-cm core drilled on the delta of Mirna River (gulf of Venice) in the coastal zone of the Adriatic Sea. With an average
chronological resolution for core stratigraphy of 7 years per cm, a succession of agro-pastoral activities has been observed,
with cereals (about 3000 years BP), olive growing, viticulture and orchards (about 2000 years BP). It can also be noted the
abandonment of all agricultural activities in this zone during more than 600 years, which can be ascribed to the consequence
of the major volcanic eruption of Santorini (1,650 years BC). In the second example, the consequences of intensive agriculture
of the last 60 years have been studied in two agro-systems in the South-East of France: In the rice cropping in Camargue and
in the meadows in Crau’s area (hay production with a COP label). In Camargue, X-ray diffraction on the clay fraction in
the paddy soils, compared to a control, show a significant increase of the clay crystallinity in the paddy soil, which implies a
decrease of their solubility and thus of silica bioavailability for plant growth. The sustainability of rice crop system requires the
clearing of silica exportations. In Crau’s area, long-term database concerning hay’s mineral content, dry matter and climate
dynamics have been statistically analyzed. Results show a steady state (in quantity and quality) of the production despite an
average temperature increase of 1.9 °C since 1960. Our findings suggest that irrigation, both with the water inputs and quality
of water, has played a key role for the sustainability of hay production since the 16th century. In the third example, the short
time (~1 hour intervals) of processes in agriculture has been explored during several rice crop seasons by in situ monitoring of
water in waterlogged soils. Relationships between variations of the chemical composition of water and plant growth have been
established from field data. Kinetical modeling of digestion of nitrogen fertilization by the agro-system has been proposed and
allow for separating biotic from abiotic processes and defining characteristic times of relaxation.
Biography
Fabienne Trolard is a permanent Researcher at the UMR INRA-UAPV with a PhD and “Aggregation of French Higher Education” in Earth Sciences, specializing in Mineral
Geochemistry and Geophysics. She has been working at INRA, for more than 25 years in Soil and Environmental Sciences. She co-created the INRA lab (Geochemistry of
Soil and Water) at Aix-en-Provence in 2000 and was its Leader for 6 years (2004-2009). She was the INRAScientific Leader of the Astuce & Tic program (2008-2011) and
Lead of the pathfinder PRECOS (2013-2014) and PRECOS Business (2015-2016). Since 1986, she has published over 280 papers and supervised 16 PhD candidates
and 3 post-doctorates. She teaches at the universities of Aix-Marseilles (Master MAEVA), Poitiers (Master NMAC, Eramus Mundus) and Avignon (CNAM-Ecole des Arts
et Métiers).
Fabienne Trolard
INRA-UAPV, UMR EMMAH, France