A5078464558- Horticultural and Viticultural Research
- Agriculture and Rural Development Research
- Rice Cultivation and Yield Improvement
- Soil Carbon and Nitrogen Dynamics
- Plant Water Relations and Carbon Dynamics
- Soil erosion and sediment transport
- Irrigation Practices and Water Management
- Sugarcane Cultivation and Processing
- Fermentation and Sensory Analysis
- Agriculture, Soil, Plant Science
- Plant nutrient uptake and metabolism
- Soil and Unsaturated Flow
- Time Series Analysis and Forecasting
- Plant Physiology and Cultivation Studies
- Wine Industry and Tourism
- Agronomic Practices and Intercropping Systems
- Data Management and Algorithms
- French Urban and Social Studies
- Neural Networks and Applications
- Polymer-Based Agricultural Enhancements
- Crop Yield and Soil Fertility
- Nuts composition and effects
- Computational Drug Discovery Methods
- Composting and Vermicomposting Techniques
- Water management and technologies
Institut Agro Montpellier
2012-2023
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2016-2023
ABSys
2016-2023
University of Antananarivo
1985-2020
Fonctionnement et Conduite des Systèmes de Culture Tropicaux et Méditerranéens
2002-2019
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2008-2016
École nationale supérieure d'arts et métiers
2016
Université Lumière Lyon 2
2006
Centre National de la Recherche Appliquée au Developpement Rural
1995
Food and Agriculture Organization of the United Nations
1990
Cowpea is a highly inbred crop. It part of crop-weed complex, whose origin and dynamics unknown, which distributed across the African continent. This study examined outcrossing rates genetic structures in 35 wild cowpea (Vigna unguiculata ssp. var. spontanea) populations from West Africa, using 21 isozyme loci, 9 them showing polymorphism.Outcrossing ranged 1% to 9.5% (mean 3.4%), classifies breeding system as primarily selfing, though rare events were detected each population studied....
This study aimed to determine how within-plot soil heterogeneity combined with yearly climate variability can promote the of vine growth at plot level, and which soil-climate parameters influence final yield berry composition most. An 8-year experiment was conducted on grapevine in two zones a vineyard (1 ha) differentiated according vigour as determined by NDVI: high (HV) low (LV). The properties (depth, texture composition), plant (shoots roots) production (yield components composition)...
The spatial variability of vineyards can be characterised through precision viticulture that will allow setting the boundaries homogeneous management zones. This study aimed to evaluate impact soil and plant (site-specific management) increase yields improve berry quality. During three consecutive seasons, contrasting treatments designed ad hoc for two zones vigour pre-established by NDVI were tested: high zone (HV) low (LV). at reducing water nitrogen supply improving microclimatic...
<p style="text-align: justify;"><strong>Aims</strong>: A water stress index based on a balance model was tested as tool for classifying the paths experienced by grapevines in various French Mediterranean vineyards. The relations between value and grapevine yield berry quality (sugars, organic acids, anthocyanins) at harvest were investigated.</p><p justify;"><strong>Methods results</strong>: data set of 102 situations, each combining one location,...
Abstract With deep placement of large urea granules in wetland rice ( Oryza sativa L.) cultivation, N is protected from various loss mechanisms and quite well recovered by plants. The objective this study, which was based on soil solution measurements, to examine the relation between localized NH 3 −rich area deriving one granule surrounding influence ammoniacal examined terms a model diffusion describing time course concentration. Treatments were mass (1, 2, 3, 4 g). Since greater amounts...
Most machine learning and data mining algorithms for time series datasets need a suitable distance measure. In addition to classic p-norm distance, numerous other measures exist the most popular is dynamic warping. Here we propose new measure, called adaptable warping (ATW), which generalizes all previous distances. We present process using genetic algorithm that adapts ATW in locally optimal way, according current classification issue have resolve. It's possible prove with parameters at...
Deep placement of urea supergranules in wetland rice (Oryza sativa L.) or correct band application enables to protect nitrogen (N) from various loss mechanisms, but recovering fertilizer N by plants depends upon geometric and agronomic factors. The objective this study was characterize the diffusion ammoniacal two sources, point line application, a typical paddy soil. A model ammonia developed for geometries. relation between rate transplanting geometry studied fields using probes attached...
This study shows how chemistry knowledge and reasoning are taken into account for building a new methodology that aims at automatically grouping data having chronological structure. We consider combinatorial catalytic experiments where the evolution of reaction (e.g., conversion) over time is expected to be analyzed. The mathematical tool has been developed compare group curves taking their shape. strategy, which consists on combining hierarchical clustering with k-means algorithm, described...
Soil physical and chemical characteristics play a key role on vine growth yield. The soils of South Uruguay display high content montmorillonite or illite. proportion these minerals deserves special attention as they influence the soil structure its hydrological properties. present study was conducted in 1.1 ha vineyard this region (Canelones), characterized by heterogeneity plant vigour. It aimed to determine map properties their relations with vigour cation exchange capacity (CEC) clay...
Irrigation may be needed in the Mediterranean context but monitoring of grapevine water stress and calculation irrigation needs are subject to difficulties. To obtain a specific yield quality harvest, defined course potential, ranging typically from – 0.1 MPa 0.6 MPa, is targeted by wine grower. In context, intense (very negative values potential) at inappropriate times possible; it can avoided supplying irrigation. The traditional diagnosis method based on predawn potential measurement...
Applying urea supergranules to flooded rice (10 cm deep, 3 weeks after transplantation) is associated with yield increases of 17%, 23%, 22% and 16% (for doses 27, 54, 81 108 units nitrogen per hectare) compared prilled urea. Nitrogen-15 can be used establish the real utilization coefficients for aerial parts plant. While figures are very low (between 4% 9%), they exceed 25% 38% on sites studied. The effect fertilizer form greater than dosage factor. results discussed in terms apparent mechanism used.