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Fact or fantasy?  Finding the science behindgarden practices and products               Dr. Linda Chalker-Scott          W...
Seminar roadmapEvaluating informationSearching academic databasesCase studiesNow what?             Dr. Linda Chalker-S...
Types of informationScientific - peer reviewed,academic audienceExample - Journal of      Environmental         Horticultu...
Types of informationGray - not peer reviewed,professional audienceExample – American           Nurseryman                D...
Types of informationPopular – not peer reviewed,general audienceExample – Organic           Gardening              Dr. Lin...
What about anecdotes?One person’s observationsUseful for identifying new areas of research               Dr. Linda Chalk...
Moving past anecdotesControl variabilityReplicate treatmentsRepeat experimentRequest confirmation             Dr. Lind...
Assess gray and popularliterature with the CRAP test!*  (And if you still have questions, consult with              Extens...
CredibilityRelevancy and currency of author’s qualifications?Publisher: academic, specialty, self- published?URL: .edu ...
RelevanceSubject and scope of research?Intended audience?Geographic or other constraints on usability?                D...
AccuracyScience-based?Objective?Current?Well-written?               Dr. Linda Chalker-Scott          WSU Extension Urb...
PurposeEducational or commercial?Political, ideological, cultural, religious, or personal biases?                 Dr. Li...
Academic databasesAGRICOLA - agriculturalCAB – agricultural, forestryBIOSIS – biologicalGREENfile - environmentalWeb ...
Choose a topicWirewormsHydrogen peroxideMowing leaves into lawns             Dr. Linda Chalker-Scott        WSU Extensi...
Advice to gardeners? “Fill a nylon sock withsprouted wheat, bury it in the area you intend  to sow to corn, then  dig up t...
Wireworm bait traps                                      Used to assess                                       infestations...
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Advice to gardenersA bait trap can detect the presenceof wireworms, but it is not itself a  demonstrated means of control ...
Advice to youConsider setting up  and running anexperiment to testwhether traps can reduce wireworm   damage in a         ...
Advice to gardeners?                                  Damping off                       “One tablespoon of 3%             ...
Thousands of web sites recommendH2O2 for prevention of damping off of     seedlings.                   Dr. Linda Chalker-S...
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Use of H2O2 in soil scienceRehabilitate soils contaminated with heavy metals and oilUsed to remove OM from soils during ...
Articles relevant to pathogensSeed microorganisms in three species of pine and techniques ofdisinfection.Vázquez Collazo, ...
Advice to gardenersHydrogen peroxide is part of a plant’s cellular response to stressSoil-applied hydrogen peroxide has ...
Question from gardeners                     “Is there any benefit or                        harm from mowing              ...
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
Relevant researchSeveral recent articles in both peer- reviewed and professional publicationsMulti-year field studies in...
Research findingsNo negative effects found in any study, even when “excessive” mulch appliedBetter turf color through wi...
Advice for gardeners Use your lawn mower  or other shreddingdevice to create a fine-textured leaf mulch for       your law...
Write up your resultsBlog or other online postingNewspaper or magazine articleExtension fact sheetScientific journal a...
Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
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Using academic databases to vet gardening information

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Learn how to search academic databases for science-based gardening advice. Dr. Linda Chalker-Scott, Extension Urban Horticulturist at Washington State University, will take you step by step through the process she uses to bust hortricultural myths.

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Transcript of "Using academic databases to vet gardening information"

  1. 1. Fact or fantasy? Finding the science behindgarden practices and products Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  2. 2. Seminar roadmapEvaluating informationSearching academic databasesCase studiesNow what? Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  3. 3. Types of informationScientific - peer reviewed,academic audienceExample - Journal of Environmental Horticulture Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  4. 4. Types of informationGray - not peer reviewed,professional audienceExample – American Nurseryman Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  5. 5. Types of informationPopular – not peer reviewed,general audienceExample – Organic Gardening Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  6. 6. What about anecdotes?One person’s observationsUseful for identifying new areas of research Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  7. 7. Moving past anecdotesControl variabilityReplicate treatmentsRepeat experimentRequest confirmation Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  8. 8. Assess gray and popularliterature with the CRAP test!* (And if you still have questions, consult with Extension specialists) *Adapted from Meriam Library, CSU @ Chico State www.csuchico.edu/lins/handouts/evalsites.html Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  9. 9. CredibilityRelevancy and currency of author’s qualifications?Publisher: academic, specialty, self- published?URL: .edu or .gov? Or .com? Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  10. 10. RelevanceSubject and scope of research?Intended audience?Geographic or other constraints on usability? Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  11. 11. AccuracyScience-based?Objective?Current?Well-written? Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  12. 12. PurposeEducational or commercial?Political, ideological, cultural, religious, or personal biases? Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  13. 13. Academic databasesAGRICOLA - agriculturalCAB – agricultural, forestryBIOSIS – biologicalGREENfile - environmentalWeb of Science (ISI) – science citation index Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  14. 14. Choose a topicWirewormsHydrogen peroxideMowing leaves into lawns Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  15. 15. Advice to gardeners? “Fill a nylon sock withsprouted wheat, bury it in the area you intend to sow to corn, then dig up the sock (now infested with wireworms) and dispose of it.” Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  16. 16. Wireworm bait traps Used to assess infestations and determine means of control Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  17. 17. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  18. 18. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
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  33. 33. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  34. 34. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  35. 35. Advice to gardenersA bait trap can detect the presenceof wireworms, but it is not itself a demonstrated means of control Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  36. 36. Advice to youConsider setting up and running anexperiment to testwhether traps can reduce wireworm damage in a http://www.ipm.iastate.edu/ipm/icm/ controlled setting 2003/4-21-2003/trapwire.html Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  37. 37. Advice to gardeners? Damping off “One tablespoon of 3% hydrogen peroxide per quart of water [applied to soil] is sufficient.” (Source: davesgarden.com) Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  38. 38. Thousands of web sites recommendH2O2 for prevention of damping off of seedlings. Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  39. 39. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  40. 40. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
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  45. 45. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  46. 46. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  47. 47. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  48. 48. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  49. 49. Use of H2O2 in soil scienceRehabilitate soils contaminated with heavy metals and oilUsed to remove OM from soils during analysis Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  50. 50. Articles relevant to pathogensSeed microorganisms in three species of pine and techniques ofdisinfection.Vázquez Collazo, I.; Ciencia Forestal en Mexico, 1996, 21, 79, 61-85.Hydrogen peroxide was not a good pine seed disinfectant, althoughtreating seeds for 40 and 60 minutes reduced microorganismpresence on the three pine species by 8 and 15% respectively.Pathogenic seedborne Fusarium oxysporum from Douglas-fir.Graham, J. H.; Linderman, R. G.; Plant Disease, 1983, 67, 3, 323-325.The fungus was isolated from 1-5% of the seed from 2 of 6 Pseudotsugamenziesii sources examined. Isolates were recovered from bothwashed and H2O2-treated seed. Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  51. 51. Advice to gardenersHydrogen peroxide is part of a plant’s cellular response to stressSoil-applied hydrogen peroxide has no value as a fungal inhibitor Photo credit: TAMU Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  52. 52. Question from gardeners “Is there any benefit or harm from mowing fallen leaves into the lawn, rather than bagging and disposing of them?” Photo credit: OSU Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  53. 53. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  54. 54. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  55. 55. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
  56. 56. Relevant researchSeveral recent articles in both peer- reviewed and professional publicationsMulti-year field studies in geographically diverse regions, including Michigan and MissouriInitial research appears to be on whether practice is harmful; results encourage further work on benefits Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  57. 57. Research findingsNo negative effects found in any study, even when “excessive” mulch appliedBetter turf color through winterImproved weed controlIncreased OM content of soil“Research clearly indicates that the practice of mulching leaf litter into existing turfgrass canopies provides benefits for the soil and the turfgrass plant.” Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  58. 58. Advice for gardeners Use your lawn mower or other shreddingdevice to create a fine-textured leaf mulch for your lawn Photo credit: UMinn Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  59. 59. Write up your resultsBlog or other online postingNewspaper or magazine articleExtension fact sheetScientific journal article Dr. Linda Chalker-Scott WSU Extension Urban Horticulturist
  60. 60. Dr. Linda Chalker-ScottWSU Extension Urban Horticulturist
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