David Roger

ORCID: 0000-0001-6958-2684
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About
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Research Areas
  • Soil Carbon and Nitrogen Dynamics
  • Plant tissue culture and regeneration
  • Plant Molecular Biology Research
  • Polysaccharides and Plant Cell Walls
  • Legume Nitrogen Fixing Symbiosis
  • Heavy metals in environment
  • Plant Reproductive Biology
  • Transgenic Plants and Applications
  • Plant nutrient uptake and metabolism
  • Crop Yield and Soil Fertility
  • Studies on Chitinases and Chitosanases
  • Pesticide and Herbicide Environmental Studies
  • Remote Sensing in Agriculture
  • Mycorrhizal Fungi and Plant Interactions
  • Microbial Community Ecology and Physiology
  • Weed Control and Herbicide Applications
  • Social Capital and Networks
  • Remote Sensing and LiDAR Applications
  • Plant-Microbe Interactions and Immunity
  • Smart Agriculture and AI
  • Soil and Land Suitability Analysis
  • Seed Germination and Physiology
  • Enzyme Production and Characterization
  • Agriculture, Plant Science, Crop Management
  • Nematode management and characterization studies

Ecologie et Dynamique des Systèmes Anthropisés
2016-2023

Centre National de la Recherche Scientifique
1998-2023

Université de Picardie Jules Verne
1996-2023

Agroécologie
2016-2017

Institut de Génomique Fonctionnelle
2006

Université de Perpignan
1998

A two-year experiment was conducted in the field to measure combined impact of tilling and N fertilization on various agronomic traits related nitrogen (N) use efficiency grain yield maize cultivated presence a cover crop. Four years after conversion no-till, significant increase harvest index, remobilization observed both under no high conditions. Moreover, we that content were higher no-till conditions only when fertilizers applied. Thus, practices based continuous appear be promising for...

10.1371/journal.pone.0164234 article EN cc-by PLoS ONE 2016-10-06

Nitrogen (N) is one of the most limiting nutrients for cereal production, especially in wheat, which main crops cultivated globally. To achieve high yields, wheat requires a certain amount nitrogen (N), as N deficiency can lead to decrease yield and thus reduce income farmers. In contrast, excessive applications fertilizer be detrimental both terrestrial aquatic environments. optimize three-year field experiment was conducted evaluate impact different fertilization strategies on various...

10.3390/agronomy13051295 article EN cc-by Agronomy 2023-05-03

A field study was conducted in northern France over two consecutive years to evaluate the combined effect of conventional tillage (CT) vs no till (NT) with or without cover crops (cc) and nitrogen (N) fertilization on various agronomic traits related N use efficiency winter wheat. Five after conversion CT NT, significant increases efficiency, utilization partial factor productivity, apparent recovery fraction remobilization were observed under three regimes (0, 161, 215 kg ha−1). It also...

10.3390/agronomy7040066 article EN cc-by Agronomy 2017-09-27

Arbuscular mycorrhizal fungi (AMF) play major roles in nutrient acquisition by crops and are key actors of agroecosystems productivity. However, agricultural practices can have deleterious effects on plant–fungi symbiosis establishment soils, thus inhibiting its potential benefits plant growth development. Therefore, we studied the impact different soil management techniques, including conventional moldboard ploughing no-till under an optimal nitrogen (N) fertilization regime absence N...

10.3390/agronomy7020038 article EN cc-by Agronomy 2017-05-28

Arbuscular mycorrhizal fungi (AMF) play a major role in the uptake of nutrients by agricultural plants. Nevertheless, some practices can interrupt fungal-plant signaling and thus impede establishment symbiosis. A field experiment performed over 5-year period demonstrated that both absence tillage nitrogen (N) fertilization improved AMF colonization wheat roots. Moreover, under no-till conditions, N aboveground biomass production did not vary significantly between N-fertilized N-unfertilized...

10.3390/agronomy6020038 article EN cc-by Agronomy 2016-06-21

The use of nitrogen (N) fertilizer and glyphosate-based herbicides is increasing worldwide, with agriculture holding the largest market share. agronomic socioeconomic utilities glyphosate are well established; however, our knowledge potential effects applied in presence or absence long-term N fertilization on microbial functional activities availability soil nutrients remains limited. Using an ex situ approach soils that did (N+) not (N0) receive synthetic for 6 years, we assessed impact...

10.1371/journal.pone.0178342 article EN cc-by PLoS ONE 2017-05-26

Abstract Linum usitatissimum protoplast-derived colonies that are cultured in auxin-supplemented medium and immobilized Ca2+-alginate matrix form round develop into polarized, embryo-like structures. On the other hand, agarose do not show an organized morphogenetic response, unique, ionically bound cell-wall protein patterns match this response. Although only slight differences neosynthesized or total constitutive polypeptides observed, dramatic changes proteins seen. In protoplasts grown on...

10.1104/pp.112.3.1191 article EN PLANT PHYSIOLOGY 1996-11-01

Crop monitoring is essential for ensuring food security in a global context of population growth and climate change. Satellite images are commonly used to estimate crop parameters over large areas, the freely available Synthetic Aperture Radar (SAR) Sentinel-1 (S-1) optical Sentinel-2 (S-2) relevant that purpose combining high temporal resolution spatial resolution. For this data article, field surveys were conducted from January July 2017 France sample wheat rapeseed during entire crops...

10.1016/j.dib.2021.107408 article EN cc-by Data in Brief 2021-09-21

10.1023/a:1006455918041 article EN Plant Cell Tissue and Organ Culture (PCTOC) 2000-01-01

Flax ( Linum usitatissimum ) hypocotyl protoplasts immobilized in a calcium‐alginate matrix give rise to embryo‐like structures. A direct correlation was established between the presence of set ionically‐bound cell wall proteins, which includes basic polypeptides P184 and P183 with an apparent molecular mass 25 kDa, this morphogenic response. Microsequencing tryptic fragments from indicated homologies chitinase family. These were confirmed by demonstrating that, after renaturation, such...

10.1034/j.1399-3054.1998.1030215.x article EN Physiologia Plantarum 1998-06-01

10.4315/0022-2747-2.1.21 article EN Journal of Milk and Food Technology 1939-01-01

Practical Experience with the Scharer Rapid Field Test for Pasteurization D. M. Roger CopyRight*Read at a Joint Session of Laboratory, Public Health Engineering and Food Nutrition Sections American Association Sixty-seventh Annual Meeting in Kansas City, Mo., October 28, 1938. https://doi.org/10.2105/AJPH.28.11.1325 Published Online: August 29, 2011

10.2105/ajph.28.11.1325 article EN American Journal of Public Health and the Nations Health 1938-11-01
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