Dr Kirsten D. Hannam

Chercheuse - Système agroécologique

J'étudie la dynamique de l'eau, du carbone et des nutriments à une gamme d'échelles spatiales.

Prix et études

  • Ph.D. Université de l'Alberta, 2006
  • M.Sc. Université de la Colombie-Britannique, 2002

Principales publications

  1. MacDonald JL, Hannam KD, Xu H, D O'Gorman. 2023. Sudden apple decline in British Columbia: a potential link between fungal cankers, invasive Sesiidae moths, and abrupt hydraulic failure. The Canadian Tri-Societies Meeting: Agroecosystem Resiliency Under a Changing Climate. Ottawa ON, Canada. 20 June 2023.

    2023 - Consulter les détails de la publication

  2. 2023. Annual meeting, the Canadian phytopathological society, 2022/Réunion annuelle, la société canadienne de phytopathologie, 2022, Canadian Journal of Plant Pathology, 45:3, 210-235, DOI: 10.1080/07060661.2023.2202486

    2023 - Consulter les détails de la publication

  3. MacDonald JL, Hannam KD, Xu H. 2022. Signs and symptoms of sudden apple decline in British Columbia: Impacts on tree physiology, and the potential role of environmental stressors. Canadian Phytopathological Society Annual Meeting. Virtual. 4 July 2022. Oral Presentation

    2022 - Consulter les détails de la publication

  4. Increased frequency and severity of heat waves and drought are becoming a major challenge for Okanagan fruit growers. These events can reduce fruit quality and compromise tree health, and may be an important trigger for sudden apple decline. A toolbox to help fruit growers mitigate the impacts of heat- and drought-related stress on fruit quality and tree health is urgently needed. Sprayable nanoparticle calcium carbonate is a potential tool for protecting fruit from sunburn and mitigating water stress, and is less expensive than shade cloth and/or evaporative cooling. This tool was tested on an experimental apple block at the Summerland Research and Development Centre over the summer of 2021. An initial spray was applied to test trees in early June, with a second spray applied immediately prior to the ‘heat dome’ event in late June, and a third spray in late July. Throughout the growing season, stem water potential, leaf transpiration and photosynthesis rates were monitored. At harvest, yield and fruit quality were assessed (e.g., sun burn [Schrader-McPherson scale], fruit size and weight, titratable acidity, and Brix. The calcium carbonate spray reduced the incidence of severe sun burn, but caused no other significant differences in fruit quality. When drought stress was applied, by temporarily cutting off the irrigation supply to both treatments, sprayed trees showed lower water stress than un-sprayed trees. Although just a preliminary study, this work suggests that sprayable protectants, such as nanoparticle calcium carbonate sprays, have potential for protecting fruit quality and mitigating drought stress during extreme heat or drought and may be an important, low-cost tool to include in Okanagan fruit growers’ climate change toolbox.

    2021 - Consulter les détails de la publication

  5. Proper balanced nutrition is important in all crops; however, knowing what the right nutrient needed at the right time for the right reasons with the right product can be very different between commodities, orchards, and seasons. There are several different sampling methods that can be utilized to assess the nutrient status of a block and help aid in nutrient management decisions. The main assessment methods are leaf, fruitlet, and soil analysis. There are some other techniques, such as sap analysis, that are being tested and may be more available in the future.

    2021 - Consulter les détails de la publication

  6. Bamber, N., Jones, M., Nelson, L., Hannam, K., Nichol, C., Pelletier, N. (2021). Life cycle assessment of mulch use on Okanagan apple orchards: Part 2 - Consequential. Journal of Cleaner Production, [online] 280 http://dx.doi.org/10.1016/j.jclepro.2020.125022

    2021 - Consulter les détails de la publication

  7. Kalcsits, L., Lotze, E., Tagliavini, M., Hannam, K.D., Mimmo, T., Neilsen, D., Neilsen, G., Atkinson, D., Biasuz, E.C., Borruso, L., Cesco, S., Fallahi, E., Pii, Y., Valverdi, N.A. (2020). Recent achievements and new research opportunities for optimizing macronutrient availability, acquisition, and distribution for perennial fruit crops, 10(11), http://dx.doi.org/10.3390/agronomy10111738

    2020 - Consulter les détails de la publication

  8. Midwood, A.J., Hannam, K.D., Forge, T.A., Neilsen, D., Emde, D., Jones, M.D. (2020). Importance of drive-row vegetation for soil carbon storage in woody perennial crops: A regional study. Geoderma, [online] 377 http://dx.doi.org/10.1016/j.geoderma.2020.114591

    2020 - Consulter les détails de la publication

  9. Bamber, N., Jones, M., Nelson, L., Hannam, K., Nichol, C., Pelletier, N. (2020). Life cycle assessment of mulch use on Okanagan apple orchards: Part 1 - Attributional. Journal of Cleaner Production, [online] 267 http://dx.doi.org/10.1016/j.jclepro.2020.121960

    2020 - Consulter les détails de la publication

  10. MacDonald JL, Forge T, Hannam K, Judd G, Moffat C, O'Gorman D, Sanfacon H, Xu H. 2020. 'Apple Decline' in the Okanagan Valley. Summerland Research and Development Centre via Instagram and Facebook.

    2020 - Consulter les détails de la publication

  11. MacDonald JL, Forge T, Hannam K, Judd G, Moffat C, O'Gorman D, Sanfaçon H, Urbez-Torres J, Xu H. 2019. "Apple Decline: A Regional Research Users' Meeting Summary." Agriculture & Agri-Food Canada, Summerland, BC. 18 pp.

    2019 - Consulter les détails de la publication

  12. Hannam, K.D., Midwood, A.J., Neilsen, D., Forge, T.A., Jones, M.D. (2019). Bicarbonates dissolved in irrigation water contribute to soil CO2 efflux. Geoderma, [online] 337 1097-1104. http://dx.doi.org/10.1016/j.geoderma.2018.10.040

    2019 - Consulter les détails de la publication

  13. MacDonald JL, Forge T, Hannam K, Judd G, Moffat C, O'Gorman D, Sanfacon H, Urbez-Torres JR, Xu H. 2019. "Recognizing Apple Decline in Your Orchard." Agriculture & Agri-Food Canada, Summerland, BC. AAFC No. 12995E/F.

    2019 - Consulter les détails de la publication

  14. Thomas, B.W., Hunt, D., Bittman, S., Hannam, K.D., Messiga, A.J., Haak, D., Sharifi, M., Hao, X. (2019). Soil health indicators after 21 yr of no-tillage in South Coastal British Columbia. Canadian Journal of Soil Science, [online] 99(2), 222-225. http://dx.doi.org/10.1139/cjss-2018-0146

    2019 - Consulter les détails de la publication

  15. Forge, T., Hannam, K., Neilsen, D., Neilsen, G. (2019). Nitrogen inputs and irrigation frequency influence population dynamics of Mesocriconema xenoplax under grapevines. Journal of Nematology, [online] 51(1), http://dx.doi.org/10.21307/jofnem-2019-084

    2019 - Consulter les détails de la publication

  16. Hannam, K.D., Fleming, R.L., Venier, L., Hazlett, P.W. (2019). Can bioenergy ash applications emulate the effects of wildfire on upland forest soil chemical properties?. Soil Science Society of America Journal, [online] 83 S201-S217. http://dx.doi.org/10.2136/sssaj2018.10.0380

    2019 - Consulter les détails de la publication

  17. Forge, T.A., Neilsen, D., Neilsen, G.H., Hannam, K.D., Randall, P., et Wambold, L. (2016). « Water-conserving mulch and micro-irrigation practices affect assemblages of nematodes parasitizing winegrape in the Okanagan Valley. », Canadian Journal of Plant Pathology. (Résumé)

    2016 - Consulter les détails de la publication

  18. Fentabil, Mesfin M., Nichol Craig F., Jones Melanie D., Neilsen, Gerry H., Neilsen, Denise , Hannam, Kirsten D. 2016. Effect of drip irrigation frequency, nitrogen rate and mulching on nitrous oxide emissions in a semi-arid climate: An assessment across two years in an apple orchard. Agric. Ecosystems Environ. 235: 242–252

    2016 - Consulter les détails de la publication

  19. Fentabil, Mesfin M., Nichol Craig F., Neilsen, Gerry H., Hannam, Kirsten D., Neilsen, Denise, Forge, Tom A., Jones, Melanie D. 2016. Effect of micro-irrigation type, N-source and mulching on nitrous oxide emissions in a semi-arid climate: An assessment across two years in a Merlot grape vineyard. Agric. Water Manage. 71:49–62.

    2016 - Consulter les détails de la publication

  20. Hannam, K.D., Neilsen, G.H., Forge, T.A., Neilsen, D., Losso, I., Jones, M.D., Nichol, C., et Fentabil, M. (2016). « Irrigation practices, nutrient applications, and mulches affect soil nutrient dynamics in a young merlot (Vitis vinifera L.) vineyard. », Canadian Journal of Soil Science, 96(1), p. 23-36. doi : 10.1139/cjss-2014-0118

    2016 - Consulter les détails de la publication

Installation de recherche

4200 route 97 Sud
C.P. 20280
Summerland, BC V0H 1Z0
Canada

Affiliations

  • Membre, Société Canadienne des Sciences du Sol (SCSS)
  • Membre, Soil Science Society of America (SSSA), American Society of Agronomy (ASA) & Crop Science Society of America (CSSA)
  • Adjoint, Université de la Colombie-Britannique - Okanagan

Langue

Anglais