Valérie Gravel

ORCID: 0000-0003-0312-3041
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About
Contact & Profiles
Research Areas
  • Plant-Microbe Interactions and Immunity
  • Composting and Vermicomposting Techniques
  • Greenhouse Technology and Climate Control
  • Nematode management and characterization studies
  • Plant Pathogens and Resistance
  • Plant Disease Management Techniques
  • Innovations in Aquaponics and Hydroponics Systems
  • Legume Nitrogen Fixing Symbiosis
  • Light effects on plants
  • Agriculture and Rural Development Research
  • Growth and nutrition in plants
  • Plant and animal studies
  • Plant Physiology and Cultivation Studies
  • Analytical chemistry methods development
  • Plant Pathogens and Fungal Diseases
  • Pesticide Residue Analysis and Safety
  • Biochemical Analysis and Sensing Techniques
  • Biological Control of Invasive Species
  • Recycling and Waste Management Techniques
  • Banana Cultivation and Research
  • Microplastics and Plastic Pollution
  • Environmental Conservation and Management
  • Dye analysis and toxicity
  • Research on scale insects
  • Pesticide and Herbicide Environmental Studies

McGill University
2014-2024

University of North Florida
2017

University of Florida
2017

Bellevue Hospital Center
2017

Wageningen University & Research
2010-2016

Université Laval
2005-2015

Agriculture and Agri-Food Canada
2008-2012

Quebec Society for the Protection of Plants
2008

The aim of this study was to investigate the different combinations red (R) and blue (B) light emitting diode (LEDs') lighting effects on growth, pigment content, antioxidant capacity in lettuce, spinach, kale, basil, pepper a growth chamber. chamber equipped with R B percentages based total intensity: 83% + 17% B; 91% 9% 95% 5% control 100% R. photosynthetic photon flux density (PPFD), photoperiod, temperature, relative humidity were maintained at 200 ± 5 μmol m-2 s-1, 16 h, 25/21 2.5 °C,...

10.3390/plants8040093 article EN cc-by Plants 2019-04-08

Gravel, V., Dorais, M. and Ménard, C. 2013. Organic potted plants amended with biochar: its effect on growth Pythium colonization. Can. J. Plant Sci. 93: 1217–1227. Even though the benefits from use of charcoal in agriculture have been known for a long time, little biochar is utilized agriculture. Therefore, we hypothesized that amendment to an organic potting soil improves plant without promoting root pathogens such as ultimum. Growth sweet pepper, lettuce, basil, geranium coriander grown...

10.4141/cjps2013-315 article EN Canadian Journal of Plant Science 2013-07-31

The effects on plants of commercial applications biofertilizer and biocontrol agents containing planktonic rhizobacteria cells are inconsistent mainly due to an unsuccessful competition with existing endogenous microbial communities. present study investigated inoculants in the form biofilms, which dense colonies single or multi-species cells, adherent either biotic abiotic surfaces, encased a self-produced matrix composed extracellular polymeric substances. Bacillus sp., Pseudomonas mixed...

10.1016/j.apsoil.2019.02.009 article EN cc-by-nc-nd Applied Soil Ecology 2019-03-02

Gravel, V., Dorais, M., Dey, D. and Vandenberg, G. 2015. Fish effluents promote root growth suppress fungal diseases in tomato transplants. Can. J. Plant Sci. 95: 427–436. Aquaculture systems generate large amounts of wastes which may constitute a beneficial amendment for horticultural crop terms nutrients, plant promoter disease suppressiveness. This study aimed to determine (1) the nutrient value rainbow trout farming coming from two feed regimes (2) suppressiveness effects those fish on...

10.4141/cjps-2014-315 article EN Canadian Journal of Plant Science 2014-12-05

Floodplains are unique environments that provide a dynamic link between terrestrial and aquatic systems. Intensification of human activity – particularly agriculture urbanisation has resulted in the degradation floodplains worldwide. Restoration sustainable management requires holistic assessment compromise stakeholders to successfully balance environmental, economic, social benefits. Yet, understanding these complex systems sufficiently evidence-based recommendations is challenge. We...

10.1016/j.baae.2024.07.005 article EN cc-by Basic and Applied Ecology 2024-07-20

Gravel, V., Dorais, M. and Menard, C. 2013. Organic potted plants amended with biochar: its effect on growth andPythium colonization. Can. J. Plant Sci. 93: 1217-1227. Even though the benefits from use of charcoal in agriculture have been known for a long time, little biochar is utilized agriculture. Therefore, we hypothesized that amendment to an organic potting soil improves plant without promoting root pathogens such as Pythium ultimum. Growth sweet pepper, lettuce, basil, geranium...

10.1139/cjps2013-315 article EN Canadian Journal of Plant Science 2013-09-01

Emerging contaminants were found to alter the soil microbial community composition. However, no changes observed when these compounds added containing 100 mg kg −1 HDPE microplastics.

10.1039/d2va00233g article EN cc-by-nc Environmental Science Advances 2023-01-01

Twenty-eight microorganisms showing in vitro antagonistic activity against Pythium ultimum were tested for their ability to reduce root rot [P. ultimum] on mature tomato plants grown a greenhouse under hydroponic conditions. Of those, Penicillium brevicompactum, solitum strain 1, Pseudomonas fluorescens subgroup G 2, marginalis, putida B syringae and Trichoderma atroviride shown strongly severity, improve the anchorage, increase marketable yields of rockwool infested with P. ultimum....

10.1080/07060660609507322 article EN Canadian Journal of Plant Pathology 2006-09-01

Organically grown greenhouse sweet pepper crops, as is the case with most year-around rely on pre-grown transplants. Production of adequately balanced (source and sink strength potential) healthy organic transplants a challenge often related to early total harvested yields. Liquid and/or solid fertilizers for were compared conventional liquid fertilizer. Transplants under conditions inoculated, or not, beneficial microbial agent, Trichoderma harzianum Rifai, strain KRL-AG2 (Rootshield®)....

10.21273/hortsci.47.2.198 article EN HortScience 2012-02-01

Day-neutral (DN) strawberry cultivars are increasingly grown in Canada because they produce flowers and fruits continuously until October. Appropriate artificial lighting conditions during preparation of high-quality transplants is critical. Unfortunately, systematic evaluation appropriate transplant production limited. The objective this study was to determine how an extended photoperiod supplemented with different light quality affects the vegetative reproductive growth a day-neutral...

10.1139/cjps-2021-0081 article EN cc-by Canadian Journal of Plant Science 2021-09-13

Gravel, V., Dorais, M., Dey, D. and Vandenberg, G. 2015. Fish effluents promote root growth suppress fungal diseases in tomato transplants. Can. J. Plant Sci. 95: 427-436. Aquaculture systems generate large amounts of wastes which may constitute a beneficial amendment for horticultural crop terms nutrients, plant promoter disease suppressiveness. This study aimed to determine (1) the nutrient value rainbow trout farming coming from two feed regimes (2) suppressiveness effects those fish on...

10.1139/cjps-2014-315 article EN Canadian Journal of Plant Science 2015-03-01

Pythium root rot, caused by ultimum , is responsible for important losses in geranium plant production, mainly as a result of the decrease overall quality. An organic production system plants based on fertilization using filtered suspension dehydrated hen manure was compared with conventional to evaluate their tolerance disease. Under typical greenhouse conditions, were inoculated Pseudomonas putida Trichoderma atroviride mixture both or harzianum and commercially available product,...

10.21273/hortsci.44.6.1622 article EN HortScience 2009-10-01

Untreated greenhouse effluents or leak solution constitute a major environmental burden because their nitrate and phosphate concentrations may induce eutrophication.Artificial wetlands offer low cost alternative treatment of consequently improve the sustainability growing systems.The objectives this study were to 1) characterize efficiency different types wetland reduce ion content tomato effluent, 2) by adding carbon 0-800 mg L -1 sucrose.Experiments conducted at Laval University where 30...

10.17660/actahortic.2011.893.138 article EN Acta Horticulturae 2011-04-01

Field exposition showed low effects of polymer and silica-based nanopesticides on strawberries (bioaccumulation, biometrics) soils (accumulation, soil enzyme activities).

10.1039/d2en00329e article EN Environmental Science Nano 2022-01-01

The stem and bulb nematode, Ditylenchus dipsaci, is a plant-parasitic nematode affecting over 500 plant species worldwide. Since 2012, garlic producers from Ontario Quebec have been particularly affected with economic losses caused by this pest. Reproduction of D. dipsaci on particular host depends its biological race, races are unknown for these populations eastern Canada. As polyphagous pest, can possibly be threat negative impact many crops grown in Quebec, such as field vegetable (e.g.,...

10.1094/pdis-07-18-1201-re article EN other-oa Plant Disease 2018-08-30
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