The scientific program will be held on the third floor of the Smith Memorial Student Union of Portland State University
located at 1825 SW Broadway, Portland, OR 97201
Program is subject to change
SUNDAY, AUGUST 20
|8:30 – 13:00||Registration|
|9:00 – 13:00||Poster Set up|
|12:30 – 12: 45||Board Buses for Tours|
|14:00 – 15:15||Tour of Monrovia|
|15:30 – 16:15||Tour Carlton Plants|
|17:30||Return to Portland|
|18:00 – 20:00||Welcome Reception at Rogue Hall Brewery
Dinner on you own
MONDAY, AUGUST 21
|7:00 – 17:00||Registration|
|8:45 – 9:15||Welcome address|
|9:15||Keynote: A review of the challenges facing ISHS members as they move towards sustainable growing media.
Neil Charles Bragg
|10:00 – 10:45||Coffee break: Solar Eclipse Viewing|
SESSION I: Student paper presentations
|10:45 – 11:00||010||Hydrothermally treated Eucalyptus globulus bark: an innovative organic material for plant substrates.
Catarina Chemetova, A. Fabião, J. Gominho, H. Ribeiro
|11:00 – 11:15||012||Pre-plant incorporation of compost as a non-fumigant alternative to promote the establishment of fruit trees at old orchard sites.
Tristan Watson, L. Nelson, D. Neilsen, G. Neilsen, T. Forge
|11:15 – 11:30||019||The potential of residues from heathland and forest management as a growing medium component and possible peat alternative for the ornamental sector.
Audrey Miserez, E. Pauwels, B. Schamp, B. Reubens, V. Nelissen, O. Grunert, W. De Nolf, L. De Nolf, K. Vancampenhout, J. Ceusters
|11:30 – 11:45||031||Redefining phosphorus nutrition and deficiency symptomology for ornamentals grown in soilless substrates.
Josh Henry, B. Whipker, I. McCall
|11:45 – 12:00||034||Coir-based growing substrates for indoor medicinal cannabis production.
Deron Caplan, M. Dixon, Y. Zheng
|12:00 – 13:30||Lunch on your own (Note list of nearby restaurants in registration package)|
|13:30 – 13:45||052||Dynamics of C ,N and C:N ratio in substrates based on miscanthus straw in container production of Spiraea japonica ‘Macrophylla’.
Magdalena Pancerz, P. Babelewski, R. Debicz, R. Waclawowicz
|13:45 – 14:00||041||Maturation of swine lagoon compost.
Paige Herring, H. Kraus, A. Noah
|14:00 – 14:15||099||3-Dimensional Characterization of Substrates with X-ray Microtomography.
Paul Bartley, B.E. Jackson, W.C. Fonteno
|14:15 – 14:30||104||Formulating Green Roof Substrates for Nutrient Retention and Reducing Runoff Pollution.
Tyson Jennett, Y. Zheng
|14:30 – 14:45||107||Wettability and hydrology of various wood fiber substrates and substrate components.
James Smith, B.E. Jackson, W.C. Fonteno
|14:45 – 15:00||062||Developing precision irrigation scheduling with a physiologically based or a substrate physical properties-based system for nursery production.
Nastaran Basiri Jahromi, F. Walker, A. Fulcher, J. Altland
|15:00 – 15:30||Summary of the 2017 ISHS Growing Media Working Group Survey
|15:30 – 15:45||Coffee break – Visit Posters|
|15:45 – 17:00||Student Poster Session (see list below)|
|17:30 – 19:30||Happy Hour Social at the RiverPlace Hotel|
|Dinner on your own|
TUESDAY, AUGUST 22
|7:30 – 7:45||Board Buses at Smith Memorial Student Union|
|8:45 – 10:00||Tour Phillips Soil|
|10:30 – 14:00||Tour Woodburn Nursery and Azaleas|
|14:30 – 16:30||Visit Oregon Flowers|
|17:15 – 19:00||Self-guided tour of Oregon Garden & Happy Hour|
|19:00 – 20:15||Dinner at Oregon Garden: Northwest Cuisine|
|21:30||Return to Portland State University/Smith Memorial Student Union|
WEDNESDAY, AUGUST 23
|7:00 – 16:30||Registration|
|8:00 – 8:45||Keynote: Past, Present, and Future of Compost Utilization in Horticulture.
ORAL PAPER SESSION I: Compost
|8:45 – 9:00||001||Compost Tea Influence on Lettuce (Lactuca sativa L.) Root Architechture.
Gaius Eudoxie, K. Grogan, M. Beckford, M. Martin
|9:00 – 9:15||004||Compost Field Trials on Horticultural Tree Nursery Fields.
Tamara Thomas, J. Barborinas, J. Doyle, K. Wynn
|9:15 – 9:30||075||Utility of compost and wood mill waste amendments to mitigate severe replant stress of sweet cherry.
Thomas Forge, D. Neilsen, G. Neilsen, P. Munro, T. Watson, L. Nelson, M. Jones
|9:30 – 9:45||018||Hot water extractable carbon as a cheap and reliable indicator of soil quality improvement by compost application.Bart Vandecasteele,
J. Debode, T. Vanden Nest, T. Dhose, G. Ruysschaert, K. Willekens
|9:45 – 10:15||Coffee break & poster presentations: ‘Compost and organic waste utilization’ and ‘Microbial Ecology’ (see list below)|
|10:15 – 10:30||038||Suitability of swine lagoon compost as transplant media for basil and tomato.
Helen Kraus, A. Noah, P. Herring
|10:30 – 10:45||090||Enhancing the benefits of compost-based fertilizers in diverse horticultural applications.
|10:45 – 11:00||002||Interactions of moisture, oxygen and compost during storage.
Chris Blok, B. Eveleens, A. van Winkel.
|11:00-11:15||087||Compost pH adjustment: quantifying differences in pH buffering capacity among composts.
|11:15 – 11:30||093||Prevalence and mitigation of recalcitrant herbicides in composts.
Frederick Michel, K. Spelcher, B. Zang, L. Huezo
|11:30 – 11:45||020||Spent growing media as a resource for composting: recycling C and nutrients for sustainable horticulture.Bart Vandecasteele,
J. Viaene, B. Reubens, K. Willekens, J. Debode, T. Van Delm
|11:45 – 13:15||Lunch on your own. Note list of nearby restaurants in registration package.|
ORAL PAPER SESSION II: Alternative substrates
|13:15 – 13:30||060||Bamboo compost as substrate for Anthurium solitarium.
Janie Mendes Jasmin, M.Q. Maitan
|13:30 – 13:45||070||Crop responses to additions of a recycled ligno-cellulose fiber `pittmoss®´ into growing media.
|13:45 – 14:00||043||Plant fibers for renewable growing media: acidification or inoculation with biocontrol fungi to reduce the N drawdown in extruded Miscanthus straw.
Bart Vandecasteele, J. Debode, H. Muylle, I. De Windt, J. Van Acker, N. Jacquet, A. Richel, N. Ameloot, K. Moreaux
|14:00 – 14:15||053||Influence of geocomposite application on pH, EC and N, P, K, Mg and Ca content in peat substrate in cultivation of selected ornamental shrubs.
Magdalena Pancerz, P. Babelewski
|14:15 – 14:30||057||Inoculated plant fibres for sustainable and disease suppressing growing media.
Jane Debode, C. De Tender, P. Cremelie, T. Deswaef, H. Muylle, B. Vandecasteele
|14:30 – 15:00||Coffee break & poster presentations: ‘Nutrition’ (see list below)|
ORAL PAPER SESSION III: Water relations
|15:00 – 15:15||021||Changes in substrates’ wettability according to irrigation methods.
Chloé Coste, R. Nemati, W.C. Fonteno, J.C. Michel
|15:15 – 15:30||028||Water management in peat-reduced and peat-free growing media: the effects of different frequency and volume on pelargonium.
Paul Alexander, N. Bragg, I. Nevison
|15:30 – 15:45||102||Influence of substrate composition when producing containerized horticultural crops at optimal and suboptimal substrate water potential.
James Owen, J. Fields
|15:45 – 16:00||026||Relevant hydraulic properties of peat based mixes for explaining root development according to irrigation strategies.
|16:00-16:15||068||Manipulating ligno-cellulosic materials as a model for producing growing media amendments.
|16:15 – 16:30||113||Watermelon grafting plants behaviour in phenolic foam compared to peat substrates.
Daniel Fernandez, Maria Teresa Lao, Alfonso Llanderal Quiroz
|17:30 – 19:00||Happy Hour Social at the Portland Art Museum|
|19:00 – 21:00||Banquet: Portland Art Museum
Participation for advance ticket holders only
THURSDAY, AUGUST 24
|7:00 – 12:00||Registration|
|8:00 – 8:45||097||Keynote: Emergent and existing technologies to measure the substrate, plant, and atmosphere continuum.
Oral Paper Session IV – Substrate Properties
|8:45 – 9:00||098||Computerized particle analyzer: the next generation of particle analysis.
Paul Bartley, B.E. Jackson, W.C. Fonteno
|9:00 – 9:15||003||Using a simple mixing model to predict rooting media properties.
Chris Blok, B. Eveleens, A. van Winkel
|9:15 – 9:30||105||Substrate pore structure: Understanding through visualization.
William C. Fonteno III, B. Jackson, P. Bartely
|9:30 – 9:45||065||Evaluation of plant development in a selection of retail plant growing media using shoot and root (2d And 3d) assessment.
Owen Doyle, C. Comerford, S. Tracy, R. O’Haire, T. Moore, D. Ni Chualain
|9:45 – 10:15||Coffee break & poster presentations: ‘Plant physiology’ (see list below)|
Oral Paper Session V – Nutrition
|10:15 – 10:30||006||Research on Fertigation Scheduling for Cucumber under Coir Culture Based on Moisture and EC sensors.
Youli Li, W. Guo, Q. Zhao, L. Wang, Y. Gao, X. Xue
|10:30 – 10:45||027||Interactive effect on pH of ammonium:nitrate fertilization ratio and the pH buffer of growing media.
|10:45 – 11:00||110||Quantifying the acidic and basic effects of fifteen floriculture species grown in peat-based substrate.
Ryan Dickson, P. Fisher
|11:00 – 11:15||100||Controlled release fertilizer placement and rate effect crop growth and substrate pH and electrical conductivity.
James Owen, A. LeBude
|11:15 – 12:30||Business Meeting|
|12:30 – 14:00||Lunch and FarWest Show on your own|
|Dinner on your own|
FRIDAY, AUGUST 25
|7:00 – 16:00||Registration|
Oral Paper Session VI – Properties of Sustainable Substrates
|8:00 – 8:15||111||The transition to responsibly sourced growing media for UK Horticulture.
Barry Mulholland, K. Waldron, A. Watson, G. Moates, C. Whiteside, S. Newman, J. Davies, R. Hickinbotham
|8:15 – 8:30||049||The social responsibility journey of Canadian’s peat moss industry: from research to practices.
|8:30 – 8:45||108||The global evolution of wood substrates: recent observations and discoveries.
Brian Jackson, W. Fonteno
|8:45 – 9:00||089||Performances of new materials for peat substitution in horticulture application.
Claire Grosbellet, E. Beaudet, E. Duclaud
|9:00 – 9:15||044||Can coir pith replace peatmoss for horticultural purpose in future?
Jos van Doren
|9:15 – 9:30||005||Researched, developed and commercialized: GreenFibre.
Gerald Kurt Schmilewski
|9:30 – 9:45||103||Influence of Miscanthus-based growing media with the amendment of hydrogel and different multicomponent fertilizers on the fresh biomass of Hydrangea arborescens ‘Annabelle’.
Magdalena Pancerz, P. Babelewski
|9:45 – 10:00||042||Necessity for indicator plants to test contamination of new constituents in growing media.
W.H.C. Geuijen, J.B.G.M. Verhagen
|10:00 – 10:30||Coffee break & poster presentations: ‘Substrate properties & sustainability’ (see list below)|
|10:30 – 10:45||046||The impact of organic and chemical fertilizers in bagged peat-based substrate under different storage conditions.
James Altland, K.Y. Jeong
|10:45 – 11:00||055||The impact of controlled release fertilizer on bagged peat-based substrate under different storage conditions.
Ka Yeon Jeong, J. Altland
|11:00 – 11:15||114||Combined effect of Rock Dust and Vermicompost on Dahlia (Dahlia pinnata) Plant Growth and Development.
Lord Abbey, L. Wang, S. Veitch
|11:15 – 11:30||101||Strategies for assessing changes in organic matter during the aging process.
Laura Kaderabek, B. Jackson, W. Fonteno
|11:30 – 11:45||069||Determination of the liming potential of ligno-cellulosic materials as a model for application in blending recycled substrates.
|11:45 – 13:00||Lunch|
Oral Paper Session VII – Nutrition, irrigation & miscellaneous
|13:00 – 13:15||035||Effect of Electrical Conductivity on the Productivity and Nutrient Uptake of Lactuca sativa `Salanova®´ grown using Nutrient Film Technique (NFT)
U.C. Samarakoon, C. Fyffe, J. Bale, P. Ling, S. Basnagala, N. Donley, J. Altland
|13:15 – 13:30||011||Zero discharge of nutrients and pesticides to the environment in hydroponic production.
Erik Van Os, E. Beerling, J. Van Ruijven, M. Van der Staaij, J. Janse, R. Kaarsemaker
|13:30-13:45||008||Yield and quality of water spinach (Ipomoea aquatica Forsk) as influenced by hydroponic nutrient solutions with different pH adjustments.
Wang Lichun, G. Wenzhong, X. Xuzhang
|13:45 – 14:00||073||Development of new bio-insecticides for greenhouse production.
|14:00 – 14:15||072||A microbial revolution: Using microbes to fertilize the world.
Oliver Grunert, E. Wambacq, M. Sakarik, J. Spanoghe, G. Gomes de Sousa, A. Alloul, M. Spiller, V. Derycke, L. Stragier, H. Verstraete, K. Fauconnier, G. Haesaert, S. E. Vlaeminck
|14:15 – 14:45||Coffee break|
Oral Paper Session VII – Substrate properties
|14:45 – 15:00||058||The strawberry rhizosphere microbiome in response to biochar and Botrytis cinerea leaf infection.
Caroline De Tender, J. Debode, A. Haegeman, P. Cremelie, B. Vandecasteele, M. Maes
|15:00 – 15:15||054||Nutrient bioavailability in biochar-worm casting growing media for production of organic basil and bell pepper.
Mehdi Sharifi, M.R. Ardakani
|15:15 – 15:30||045||Assessing biochar as a lime replacement for peat substrates.
Lesley Judd, B. Jackson, D. Hesterberg, M. Boyette, M. Evans, W. Fonteno
|15:30 – 15:45||082||Oxygen availability, not phenolic acids, is the primary driver for nitrification in soilless systems.
Beatrix Waechter Alsanius
|15:45||Final summary and conclusion|
|017||The potential of aged Acacia melanoxylon bark as a source for alternative substrate.
Catarina Chemetova, S. Braga, A. Fabião, J. Gominho, H. Ribeiro
|032||Nutrient disorders of Lactuca sativa `Salanova Red´.
Josh Henry, B. Whipker, I. McCall
|033||Coleus growth response to nitrogen concentrations.
Josh Henry, B. Whipker, I. McCall
|079||Incorporating slow release coated polymer aluminum sulfate into the substrate to produce blue hydrangeas.
Hunter Landis, K. Hicks I. McCall B.E. Whipker
|088||Designing a synthetic soil from polymer foams.
|112||Nitrification and dilution of plant residue derived digestate in NFT cultivation of Brassica leafy vegetables.
Olle Lind, M. Hultberg, H. Asp*
|040||Tifton roots as substrate for air-layering litchi tree.
Kezia Moraes Vieira, D.C. Baitelle, M.V. Sandoval Paixão, P.C. dos Santos*, A.J. Cordeiro de Carvalho
Compost and organic waste utilization
|066||Dairy by-products in composts used as peat diluents in growing media.
W.R. Carlile, D. Ni Chualain
|061||Production of Rangpur lime saplings in substrate amended with tannery sludge.
Paulo Cesar dos Santos. T. Nunes Tudeia, D. Corona Baitelle, S. de Jesus Freitas, S. da Silva Berilli, S. de Paiva Freitas, W. Souza da Silva
|039||Harvest yields of greenhouse tomatoes grown in pine bark amended cotton gin compost.
Brian Jackson, A. Wright, J. Kemble
|016||Effect of reused cocopeat substrate on growth and yield of summer-cultivated paprika in EC-based recycling hydroponic cultivation.
Il-Seop Kim, D.C. Jang, K.Y. Choi, J.K. Kim
|092||Characterization of microbial community structure in pine bark substrates.
J. Altland, F. Michel, S. Valles
|064||Response of the soil microbiome to compost amendment.
Jane Debode, C. De Tender, P. Cremelie, T. D’Hose, G. Ruysschaert, B. Vandecasteele
|074||Effect of growing media with beneficial microorganisms on the aquaponic production of strawberries.
Rémi Naasz, F. Barraud
|085||Assessing the severity of damping-off caused by Pythium ultimum and Rhizoctonia solani in peat-based greenhouse substrates amended with pine wood chip aggregates.
W.G. Owen, B.E. Jackson, B.E. Whipker, W.C. Fonteno, D.M. Benson
|063||Implications on the root microbial community in the presence of Pythium ultimum in soilless cultivation systems
Anna Rosberg, B. Alsanius, M. Hultberg, W. Wohanka
|096||The mini-horhizotron as a tool for assessing disease severity in container grown annuals.
Laura Kaderabek. B. Jackson, W. Fonteno
|078||Expanding leaf tissue nutrient sufficiency standards for floriculture species.
Hunter Landis, K. Hicks, W.G. Owen, I. McCall, B.E. Whipker
|077||Characterization of nutrient disorders of Pelargonium x domesticum.
Brian Whipker, I. McCall
|076||Plant growth affected by low substrate pH without inducing leaf symptomology of petunia and poinsettia.
Brian Whipker, W.G. Owen, B. Jackson, I. McCall
|013||Biochar can enhance potassium availability during cyclamen cultivation.
Patrizia Zaccheo, L. Crippa, F. Bedussi
|007||Nitrate concentration determination using UV absorption spectra based on Multiple Linear Regression.
Wengang Zheng, L. Jiao, D. Dong
|086||Stacking substrate-filled containers influence root and shoot growth of bedding plants.
W.G. Owen, R.G. Lopez
|095||Effect of propagation cell density and use of a nursery stage on plant growth of ‘Rex’ lettuce in hydroponic production.
Michael Evans, H. Quick
Substrate properties and sustainability
|071||Hydration efficiency and wettability of two biochars.
Lesley Judd, B. Jackson, W. Fonteno
|014||Influence of pumice on ammonium dynamic in soilless culture.
Laura Crippa, P. Zaccheo, F. Bedussi
|024||Potential use of `End of Life´ stone wool as substrate component.
Jean-Charles Michel, M. Donners, J. Verhoeven
|109||Specific surface area of growing medium’ components.
Jean-Charles Michel, B. Jackson, W.C. Fonteno
|081||Cucumber culture on woodfiber substrate amended with Greenchar®.
Claire Grosbellet, A. Braud, S. Afonso, E. Beaudet
|009||Insect-proof covered screenhouse to increase chinese flowering cabbage yield and water use efficiency in arid areas.
Guo Wenzhong, L. Wang
|037||Green City Solutions- A new concept for greener cities and reduction of air pollution.
Fritz-Gerald Schröder, P. Saenger
|115||Biochar as an alternative growing media in greenhouse vegetable production.
Angieszka Medynska-Jurazek, Irmina Cwielag-Piasecka, Piotr Chohura, Cecylia Uklanska-Pusz