James Altland
Research Leader
Research Leader
James Altland, Ph.D.
Research Horticulturist
1680 Madison Ave., Wooster, Ohio 44691
(330) 317-9142
I am the Research Leader for the Application Technology Research Unit (ATRU). This unit currently includes 10 scientists and their support staff. We focus on agricultural spray technologies and all aspects of controlled environment agriculture (CEA) including entomology, plant pathology, irrigation and water quality, plant physiology, energy efficiency, and systems engineering.
My specific interests are in the chemical, physical, and biological properties of container substrates and how they can be managed and modified for sustainable crop production. Recent research has focused on chemical amendments to that reduce the amount of phosphorus (P) leached from containers. Other research has explored novel physical components to replace expensive and non-sustainable substrate materials currently being used. A major emphasis of current research is to better understand the biological properties of container substrates by documenting how management practices affect the microbiome. Using amplicon sequencing techniques, we observe the change in microbial communities over the production cycle of crops exposed to different management practices.
Research Experience
2002-2007 Assistant Professor, Oregon State University, Aurora, OR.
2007-2011 GS-13, Research Horticulturist, USDA, ARS, Wooster, OH.
2011-present GS-14, Research Horticulturist, USDA, ARS, Wooster, OH.
2017-present GS-14, Acting Research Leader, USDA, ARS, Wooster, OH.
Educational Background
1991-1995 Penn State University; major, Landscape Contracting; minor, Horticulture B.S. 1995
1997-1999 Auburn University; Horticulture, M.S. 1999.
1999-2001 Auburn University; Probability Theory and Stat. Inf., M. Stat. 2001
1999-2001 Auburn University; Horticulture, Ph.D. 2001.
- (Clicking on the reprint icon
will take you to the publication reprint.)
- Influence of Electrical Conductivity on Plant Growth, Nutritional
Quality, and Phytochemical Properties of Kale (Brassica napus)and Collard (Brassica oleracea) Grown Using Hydroponics -(Peer Reviewed Journal)
Yang, T., Samarakoon, U., Altland, J.E., Ling, P. 2024. Influence of Electrical Conductivity on Plant Growth, Nutritional Quality, and Phytochemical Properties of Kale (Brassica napus)and Collard (Brassica oleracea) Grown Using Hydroponics. Agronomy. 14. Article #2704. https://doi.org/10.3390/agronomy14112704.
- Evaluation of hydroponic systems for organic lettuce production in controlled environment -(Peer Reviewed Journal)
Chowdhury, M., Samarakoon, U., Altland, J.E. 2024. Evaluation of hydroponic systems for organic lettuce production in controlled environment. Frontiers in Plant Science. 15. Article 1401089. https://doi.org/10.3389/fpls.2024.1401089. - Leaching fraction-based irrigation schedule, coir-amended pine bark improve sustainability of H. paniculata ‘Jane’ production-(Peer Reviewed Journal)
- Growth, phytochemical concentration, nutrient uptake, and water consumption of butterhead lettuce in response to hydroponic system design and growing season -(Peer Reviewed Journal)
Yang, T., Samarakoon, U., Altland, J.E. 2024. Growth, phytochemical concentration, nutrient uptake, and water consumption of butterhead lettuce in response to hydroponic system design and growing season. Scientia Horticulturae. 332. Article 113201. https://doi.org/10.1016/j.scienta.2024.113201. - A base layer of ferrous sulfate-amended pine bark reduces phosphorus leaching from nursery containers -(Peer Reviewed Journal)
Shreckhise, J.H., Altland, J.E. 2024. A base layer of ferrous sulfate-amended pine bark reduces phosphorus leaching from nursery containers. Agronomy. https://doi.org/10.3390/agronomy14040757. - Tinkering for Profit: pH got you down? Here is a foolproof way to achieve your optimal pH!-(Popular Publication)
Owen Jr, J.S., Altland, J.E. 2024. Tinkering for Profit: pH got you down? Here is a foolproof way to achieve your optimal pH!. Nursery Management. 40(3):16-18. https://www.nurserymag.com/article/optimal-ph-substrate-mixing-nursery-production/. - Comparison of organic water-soluble fertilizer efficacy on Lactuca sativa (lettuce) -(Peer Reviewed Journal)
Floom, M., Altland, J.E., Michel, F., Samarakoon, U., Ling, P. 2024. Comparison of organic water-soluble fertilizer efficacy on Lactuca sativa (lettuce). Acta Horticulturae. 1389:255-262. https://doi.org/10.17660/ActaHortic.2024.1389.29. - Effects of compost fertility on the growth, yield, and nutrient content of lettuce (Lactuca sativa) -(Peer Reviewed Journal)
Floom, M., Altland, J.E., Michel, F., Samarakoon, U., Ling, P. 2024. Effects of compost fertility on the growth, yield, and nutrient content of lettuce (Lactuca sativa). Acta Horticulturae. 1389:139-152. https://doi.org/10.17660/ActaHortic.2024.1389.17. - Substrate comparison for tomato propagation under different fertigation protocols-(Peer Reviewed Journal)
- Nutrient availability and plant phenological stage influence the substrate microbiome in container-grown Impatiens walleriana ‘Xtreme Red’ -(Peer Reviewed Journal)
Quijia Pillajo, J., Chapin, L.J., Quiroz-Moreno, C.D., Altland, J.E., Jones, M. 2024. Nutrient availability and plant phenological stage influence the substrate microbiome in container-grown Impatiens walleriana ‘Xtreme Red’. BMC Plant Biology. 24. Article 176. https://doi.org/10.1186/s12870-024-04854-7. - Paclobutrazol residues in recirculated water in commercial greenhouses -(Peer Reviewed Journal)
Raudales, R.E., Toro-Herrera, M.A., Fisher, P., Boldt, J.K., Altland, J.E. 2024. Paclobutrazol residues in recirculated water in commercial greenhouses. HortTechnology. 34(2):198-203. https://doi.org/10.21273/HORTTECH05367-23. - The pour-through procedure preferentially extracts substrate solution from the bottom of the container in conventional and stratified substrates -(Peer Reviewed Journal)
Altland, J.E., Owen Jr, J.S. 2024. The pour-through procedure preferentially extracts substrate solution from the bottom of the container in conventional and stratified substrates. HortScience. 59(2):201–208. https://doi.org/10.21273/HORTSCI17425-23. - Overcoming the nursery industry labor shortage: a survey of strategies to adapt to a reduced workforce and automation and mechanization technology adoption levels -(Peer Reviewed Journal)
Fulcher, A., Rihn, A., Warner, L., LeBude, A., Schexnayder, S., Altland, J.E., Baumgarner, N., Marble, C., Nackley, L., Palma, M., Velandia, M., Zhu, H., Gan, H., Owen Jr, J.S. 2023. Overcoming the nursery industry labor shortage: a survey of strategies to adapt to a reduced workforce and automation and mechanization technology adoption levels. HortScience. 58(12): 1513-1525. https://doi.org/10.21273/HORTSCI17230-23. - Surveying North American specialty crop growers’ current use of soilless substrates and future research and education needs -(Peer Reviewed Journal)
Fields, J.S., Owen Jr, J.S., Lamm, A., Altland, J.E., Jackson, B., Oki, L., Samtani, J., Zheng, Y., Criscione, K.S. 2023. Surveying North American specialty crop growers’ current use of soilless substrates and future research and education needs. Agriculture. 13(9). Article #1727. https://doi.org/10.3390/agriculture13091727. - Microbial community structure in soilless substrates used for nursery crops -(Peer Reviewed Journal)
Valles-Ramirez, S., Altland, J.E., Testen, A.L., Poelstra, J.W., Michel Jr, F.C. 2023. Microbial community structure in soilless substrates used for nursery crops. HortScience. 58(11):1348-1357. https://doi.org/10.21273/hortsci17275-23. - Silicon accumulation by sunflowers at low substrate pH -(Peer Reviewed Journal)
Boldt, J.K., Banks, M.L., Altland, J.E. 2023. Silicon accumulation by sunflowers at low substrate pH. Acta Horticulturae. 1377:739-746. https://doi.org/10.17660/ActaHortic.2023.1377.90. - Evaluation of substrates for cucumber production in the dutch bucket hydroponic system -(Peer Reviewed Journal)
Yang, T., Altland, J.E., Samarakoon, U. 2023. Evaluation of substrates for cucumber production in the dutch bucket hydroponic system. Scientia Horticulturae. 308. Article #111578. https://doi.org/10.1016/j.scienta.2022.111578. - Growth and quality response of four container-grown nursery crop species to low-phosphorus controlled-release fertilizer -(Peer Reviewed Journal)
Shreckhise, J.H., Owen Jr, J.S., Niemiera, A.X., Altland, J.E. 2022. Growth and quality response of four container-grown nursery crop species to low-phosphorus controlled-release fertilizer. HortTechnology. 32(5):447-458. https://doi.org/10.21273/HORTTECH05058-22. - A glimpse into the future of soilless substrates-(Popular Publication)
Owen Jr, J.S., Fields, J.S., Altland, J.E., Lamm, A., Jackson, B.E. 2022. A glimpse into the future of soilless substrates. Growertalks. 86(1):52-53. https://www.growertalks.com/Article/?articleid=25715. - Defying gravity: Utilizing stratified growing media to invent the future-(Popular Publication)
Owen Jr, J.S., Fields, J.S., Altland, J.E. 2022. Defying gravity: Utilizing stratified growing media to invent the future. Nursery Management and Production. March 2022. 18-23. - Soilless substrate science for current and future growers-(Popular Publication)
Jackson, B.E., Fields, J.S., Owen Jr, J.S., Altland, J.E. 2022. Soilless substrate science for current and future growers. Growertalks. 82(12):52-45. https://www.growertalks.com/Article/?articleid=25658. - Soilless substrate science: Part 1 in a series on a collaborative effort to support our industry's needs for soilless sustrates-(Popular Publication)
Fields, J.S., Owen Jr, J.S., Altland, J.E., Jackson, B.E., Lamm, A. 2022. Soilless substrate science: Part 1 in a series on a collaborative effort to support our industry's needs for soilless sustrates. Growertalks. 85(11):46-47 (March). - The latest on growing media research-(Popular Publication)
Jackson, B.E., Fields, J.S., Altland, J.E., Owen Jr, J.S. 2022. The latest on growing media research. Growertalks. 85(9): 56-60.https://www.growertalks.com/Article/?articleid=25544. - Effect of substrate stratification on growth of common nursery weed species and container-grown ornamental species -(Peer Reviewed Journal)
Yvraj, K., Marble, C., Altland, J.E., Pearson, B., Chen, J., Devkota, P. 2022. Effect of substrate stratification on growth of common nursery weed species and container-grown ornamental species. HortTechnology. 32(1):74-83. https://doi.org/10.21273/HORTTECH04965-21. - The pour-through procedure for monitoring container substrate chemical properties: a review -(Review Article)
Altland, J.E. 2021. The pour-through procedure for monitoring container substrate chemical properties: a review. Horticulturae. 7(12).Article 536. https://doi.org/10.3390/horticulturae7120536. - Comparison of supplemental lighting from high-pressure sodium lamps or light-emitting diodes on morphology and nutrient uptake of greenhouse crops -(Peer Reviewed Journal)
Boldt, J.K., Altland, J.E. 2022. Comparison of supplemental lighting from high-pressure sodium lamps or light-emitting diodes on morphology and nutrient uptake of greenhouse crops. Acta Horticulturae. 1337:313-322. https://doi.org/10.17660/actahortic.2022.1337.42. - Substrate stratification: layering unique substrates within a container increases resource efficiency without impacting growth of shrub rose -(Peer Reviewed Journal)
Fields, J., Owen Jr, J.S., Altland, J.E. 2021. Substrate stratification: layering unique substrates within a container increases resource efficiency without impacting growth of shrub rose. Agronomy. 11(8). Article 1454. https://doi.org/10.3390/agronomy11081454. - Evaluation of organic substrates as an alternative to perlite for cucumber production in the Dutch bucket hydroponic system -(Peer Reviewed Journal)
Yang, T., Altland, J.E., Samarakoon, U. 2021. Evaluation of organic substrates as an alternative to perlite for cucumber production in the Dutch bucket hydroponic system. Acta Horticulturae. 1317:319-326. https://doi.org/10.17660/actahortic.2021.1317.37. - Photosynthesis, biomass production, nutritional quality, and flavor-related phytochemical properties of hydroponic-grown arugula (Eruca sativa Mill.) ‘standard’ under different electrical conductivities of nutrient solution -(Peer Reviewed Journal)
Yang, T., Samarakoon, U., Altland, J.E., Ling, P. 2021. Photosynthesis, biomass production, nutritional quality, and flavor-related phytochemical properties of hydroponic-grown arugula (Eruca sativa Mill.) ‘standard’ under different electrical conductivities of nutrient solution. Agronomy. 11(7). Article 1340. https://doi.org/10.3390/agronomy11071340. - Soilless substrate science: A north american needs assessment to steer soilless substrate research into the future -(Peer Reviewed Journal)
Fields, J., Owen Jr, J.S., Lamm, A., Altland, J.E., Jackson, B., Zheng, Y., Oki, L., Fonteno, K., Samtani, J., Campbell, B.T. 2021. Soilless substrate science: A north american needs assessment to steer soilless substrate research into the future. Acta Horticulturae. 1317:313-318. https://doi.org/10.17660/ActaHortic.2021.1317.36. - Relationship between particle size summation curves and the moisture characteristic curve for soilless substrates -(Peer Reviewed Journal)
Zazirska, M., Owen Jr, J.S., Altland, J.E., Field, J.S. 2021. Relationship between particle size summation curves and the moisture characteristic curve for soilless substrates. Acta Horticulturae. 1305:209-218. https://doi.org/10.17660/actahortic.2021.1305.29. - Petunia (Petunia ×hybrida) cultivars vary in silicon accumulation and distribution -(Peer Reviewed Journal)
Boldt, J.K., Altland, J.E. 2021. Petunia (Petunia ×hybrida) cultivars vary in silicon accumulation and distribution. HortScience. 56(3):305-312. https://doi.org/10.21273/HORTSCI15486-20. - PH buffering in pine bark substrates as a function of particle size -(Peer Reviewed Journal)
Pancerz, M., Altland, J.E. 2020. PH buffering in pine bark substrates as a function of particle size. HortScience. 55(11):1817-1821. https://doi.org/10.21273/hortsci14969-20. - Salt tolerance of hydrangea plants varied among species and cultivar within a species -(Peer Reviewed Journal)
Niu, G., Sun, Y., Hooks, T., Altland, J.E., Dou, H., Perez, C. 2020. Salt tolerance of hydrangea plants varied among species and cultivar within a species. Horticulturae. 6(3). Article 54. https://doi.org/10.3390/horticulturae6030054. - Storage procedures affect pH, electrical conductivity, and nutrient concentrations of pour-through leachate from pine bark and peat-based substrates -(Peer Reviewed Journal)
Landaverde, A.C., Shreckhise, J.H., Altland, J.E. 2020. Storage procedures affect pH, electrical conductivity, and nutrient concentrations of pour-through leachate from pine bark and peat-based substrates. HortScience. 55(10):1597-1604. https://doi.org/10.21273/hortsci15232-20. - Effects of electrical conductivity, pH, and foliar application of calcium chloride on yeld and tipburn of Lactuca sativa grown using the nutrient–film technique -(Peer Reviewed Journal)
Samarakoon, U., Palmer, J., Ling, P., Altland, J.E. 2020. Effects of electrical conductivity, pH, and foliar application of calcium chloride on yeld and tipburn of Lactuca sativa grown using the nutrient–film technique. HortScience. https://doi.org/10.21273/HORTSCI15070-20. - Dolomite and micronutrient fertilizer affect phosphorus fate when growing crape myrtle in pine bark -(Peer Reviewed Journal)
Shreckhise, J.H., Owen Jr, J.S., Eick, M.J., Niemiera, A.X., Altland, J.E., Jackson, B.E. 2020. Dolomite and micronutrient fertilizer affect phosphorus fate when growing crape myrtle in pine bark. HortScience. 55(6)832-840. https://doi.org/10.21273/hortsci14558-20. - Photosynthesis, growth, and water use of Hydrangea paniculata ‘Silver Dollar’ using a physiological-based or a substrate physical properties-based irrigation schedule and a biochar substrate amendment -(Peer Reviewed Journal)
Jahromi, N.B., Fulcher, A., Walker, F., Altland, J.E. 2020. Photosynthesis, growth, and water use of Hydrangea paniculata ‘Silver Dollar’ using a physiological-based or a substrate physical properties-based irrigation schedule and a biochar substrate amendment. Irrigation Science. 38:263-374. https://doi.org/10.1007/s00271-020-00670-7. - Optimizing substrate available water and coir amendment rate in pine bark substrates -(Peer Reviewed Journal)
Jahromi, N.B., Fulcher, A., Walker, F., Altland, J.E. 2020. Optimizing substrate available water and coir amendment rate in pine bark substrates. Water. 12(2). Article 362. https://doi.org/10.3390/w12020362. - Cold hardiness of Grevillea in western Oregon -(Peer Reviewed Journal)
Bell, N., Stoven, H., Owen, J.S., Altland, J.E. 2019. Cold hardiness of Grevillea in western Oregon. HortTechnology. 30(1):117-121. https://doi.org/10.21273/HORTTECH04377-19. - Morphological and physiological responses of Cornus alba to salt and drought stresses under greenhouse conditions -(Peer Reviewed Journal)
Liu, Q., Sun, Y., Altland, J.E., Niu, G. 2020. Morphological and physiological responses of Cornus alba to salt and drought stresses under greenhouse conditions. HortScience. 55(2):224–230. https://doi.org/10.21273/HORTSCI14460-19. - Research priorities of the environmental horticultural industry founded through consensus-(Peer Reviewed Journal)
Owen Jr., J.S., Lebude, A.V., Calabro, J., Boldt, J.K., Gray, J., Altland, J.E. 2019. Research priorities of the environmental horticultural industry founded through consensus. Journal of Environmental Horticulture. 37(4):120-126. - Evaluating red pine tree substrates for phytotoxicity and growth effects on seedlings and bedding plants -(Peer Reviewed Journal)
Owen, W.G., Altland, J.E. 2021. Evaluating red pine tree substrates for phytotoxicity and growth effects on seedlings and bedding plants. Acta Horticulturae. 1305:31-38. https://doi.org/10.17660/ActaHortic.2021.1305.5. - Water and air relations in propagation substrates -(Peer Reviewed Journal)
Yafuso, E., Fisher, P., Bohorquez, A., Altland, J.E. 2019. Water and air relations in propagation substrates. HortScience. 54(11):2024–2030. https://doi.org/10.21273/HORTSCI14145-19. - Flurprimidol and paclobutrazol drench activity not affected in commercial wood fiber substrates -(Peer Reviewed Journal)
Owen, W.G., Altland, J.E. 2021. Flurprimidol and paclobutrazol drench activity not affected in commercial wood fiber substrates. Acta Horticulturae. 1305:383-390. https://doi.org/10.17660/ActaHortic.2021.1305.50. - Dolomite and micronutrient fertilizer affect phosphorus fate in pine bark substrate used for containerized nursery crop production -(Peer Reviewed Journal)
Shreckhise, J.H., Owen, J.S., Eick, M.J., Niemiera, A.X., Altland, J.E., White, S.A. 2019. Dolomite and micronutrient fertilizer affect phosphorus fate in pine bark substrate used for containerized nursery crop production. Soil Science Society of America Journal. 83(5):1410-1420. https://doi.org/10.2136/sssaj2018.12.0493. - Efficacy of preemergence herbicides over time-(Peer Reviewed Journal)
Altland, J.E. 2019. Efficacy of preemergence herbicides over time. Journal of Environmental Horticulture. 37(2):55-62. - Timing of a short-term reduction in temperature and irradiance affects growth and development of four annual bedding plants -(Peer Reviewed Journal)
Boldt, J.K., Altland, J.E. 2019. Timing of a short-term reduction in temperature and irradiance affects growth and development of four annual bedding plants. Horticulturae. 5(1):15. https://doi.org/10.3390/horticulturae5010015. - Lime rate affects substrate pH and container-grown birch trees -(Peer Reviewed Journal)
Altland, J.E. 2018. Lime rate affects substrate pH and container-grown birch trees. Communications in Soil Science and Plant Analysis. 50(1):93-101. https://doi.org/10.1080/00103624.2018.1554670. - Evaluating on-demand irrigation systems for container-grown woody plants grown in biochar-amended pine bark -(Peer Reviewed Journal)
Jahromi, N., Fulcher, A., Walker, F., Altland, J.E., Wright, W., Eash, N. 2018. Evaluating on-demand irrigation systems for container-grown woody plants grown in biochar-amended pine bark. HortScience. 53(12):1891-1896. https://doi.org/10.21273/HORTSCI13541-18. - Physical and hydraulic properties of commercial pine-bark substrate products used in production of containerized crops -(Peer Reviewed Journal)
Altland, J.E., Owen, J., Jackson, B., Fields, J. 2018. Physical and hydraulic properties of commercial pine-bark substrate products used in production of containerized crops. HortScience. 53(12):1883-1890. https://doi.org/10.21273/HORTSCI13497-18. - Integrating moisture characteristic curves with gravimetric data in the management of substrate moisture content for annual vinca -(Peer Reviewed Journal)
Newby, A., Altland, J.E., Struve, D., Pasian, C., Ling, P., Jourdan, P., Kessler, R., Carpenter, M. 2018. Integrating moisture characteristic curves with gravimetric data in the management of substrate moisture content for annual vinca. HortScience. 53:1197-1202. https://doi:10.21273/HORTSCI13030-18. - Initial substrate moisture content and storage temperature affect chemical properties of bagged substrates containing poultry litter fertilizer -(Peer Reviewed Journal)
Altland, J.E., Jeong, K. 2018. Initial substrate moisture content and storage temperature affect chemical properties of bagged substrates containing poultry litter fertilizer. HortScience. 53(8):1191-1196. https://doi.org/10.21273/hortsci13004-18. - Influence of substrate physical properties on container weed germination-(Peer Reviewed Journal)
Altland, J.E., Boldt, J.K. 2018. Influence of substrate physical properties on container weed germination. Journal of Environmental Horticulture. 36(1):1-6. - Responses of marigold cultivars to saline water irrigation -(Peer Reviewed Journal)
Sun, Y., Niu, G., Perez, C., Pemberton, H., Altland, J.E. 2018. Responses of marigold cultivars to saline water irrigation. HortTechnology. 28(2):166-171. https://doi.org/10.21273/HORTTECH03981-18. - Growth response, mineral nutrition, and water utilization of container grown woody ornamentals grown in biochar-amended pine bark -(Peer Reviewed Journal)
Basiri, N., Walker, F., Fulcher, A., Altland, J.E., Wright, W. 2018. Growth response, mineral nutrition, and water utilization of container grown woody ornamentals grown in biochar-amended pine bark. HortScience. 53(3):347-353. https://doi.org/10.21273/HORTSCI12643-17. - Silicon accumulation and distribution in petunia and sunflower grown in a rice hull-amended substrate -(Peer Reviewed Journal)
Boldt, J.K., Locke, J.C., Altland, J.E. 2018. Silicon accumulation and distribution in petunia and sunflower grown in a rice hull-amended substrate. HortScience. 53:698-703. https://doi.org/10.21273/HORTSCI12325-17. - Initial substrate moisture content and storage temperature affects chemical properties of bagged substrates containing controlled release fertilizer at two different temperatures -(Peer Reviewed Journal)
Altland, J.E., Jeong, K.Y. 2017. Initial substrate moisture content and storage temperature affects chemical properties of bagged substrates containing controlled release fertilizer at two different temperatures. HortScience. 52(10):1429-1434. doi:10.21273/HORTSCI12216-17. - Cultivar variation in silicon accumulation and distribution in Petunia ×hybrida-(Abstract Only)
Boldt, J.K., Altland, J.E. 2017. Cultivar variation in silicon accumulation and distribution in Petunia ×hybrida. HortScience. 52(9):S198. - Irrigation water acidification to neutralize alkalinity for nursery crop production: Substrate pH, electrical conductivity, and nutrient concentrations; and plant nutrition and growth-(Abstract Only)
- Irrigation water acidification to neutralize alkalinity for nursery crop production: Substrate pH, electrical conductivity, nutrient concentrations, and plant nutrition and growth-(Peer Reviewed Journal)
Albano, J.P., Altland, J.E., Merhaut, D., Wilson, S., Wilson, C. 2017. Irrigation water acidification to neutralize alkalinity for nursery crop production: Substrate pH, electrical conductivity, nutrient concentrations, and plant nutrition and growth. HortScience. 52(10):1401-1405. doi: 10.21273/hortsci11439-17. - Pyrolysis temperature and heating time affect rice hull biochar properties-(Peer Reviewed Journal)
Altland, J.E., Locke, J.C., Boldt, J.K. 2018. Pyrolysis temperature and heating time affect rice hull biochar properties. Acta Horticulturae. 1191:145-152. - Rice hull mulch affects germination of bittercress and creeping woodsorrel in container plant culture -(Peer Reviewed Journal)
Altland, J.E., Boldt, J.K., Krause, C.R. 2016. Rice hull mulch affects germination of bittercress and creeping woodsorrel in container plant culture. American Journal of Plant Sciences. 7:2359-2375. - Dolomitic lime amendment affects pine bark substrate pH, nutrient availability, and plant growth: A review -(Review Article)
Altland, J.E., Jeong, K.Y. 2016. Dolomitic lime amendment affects pine bark substrate pH, nutrient availability, and plant growth: A review. HortTechnology. 26(5):565-573. - Effect of rice hull mulch on nutrient concentration of fertilized irrigation water-(Abstract Only)
Altland, J.E., Locke, J.C., Boldt, J.K. 2016. Effect of rice hull mulch on nutrient concentration of fertilized irrigation water [abstract]. HortScience. 51(9):S323. - Silicon accumulation and distribution in petunia and sunflower-(Abstract Only)
Boldt, J.K., Locke, J.C., Altland, J.E. 2016. Silicon accumulation and distribution in petunia and sunflower [abstract]. HortScience. 51(9):S368. - Granular activated carbon to remove agrichemicals from water-(Trade Journal)
Fisher, P., Grant, G., Zayas, V., Raudales, R., Altland, J.E., Boldt, J.K. 2016. Granular activated carbon to remove agrichemicals from water. Greenhouse Grower Magazine. May/June: 20-22. - Micronutrient availability from steel slag amendment in pine bark substrates -(Peer Reviewed Journal)
Altland, J.E., Locke, J.C., Zellner, W.L. 2016. Micronutrient availability from steel slag amendment in pine bark substrates. Journal of Environmental Horticulture. 34(3)67-74. - Horseweed control in field nursery crops-(Abstract Only)
Altland, J.E. 2016. Horseweed control in field nursery crops[abstract]. Northeaster Plant, Pest and Soils Conference, January 3-7, 2016, Philadelphia, Pennsylvania. 1:101. - High rates of gasified rice hull biochar affect geranium and tomato growth in a soilless substrate -(Peer Reviewed Journal)
Altland, J.E., Locke, J.C. 2017. High rates of gasified rice hull biochar affect geranium and tomato growth in a soilless substrate. Journal of Plant Nutrition. http://dx.doi.org/10.1080/01904167.2016.1249800. - Micronutrient availability from steel slag amendment in peatmoss substrates -(Peer Reviewed Journal)
Altland, J.E., Zellner, W.L., Locke, J.C., Krause, C.R. 2015. Micronutrient availability from steel slag amendment in peatmoss substrates. HortScience. 50:1715-1720. - Applications and limitations to use of rice hull biochar in container substrates-(Abstract Only)
- Substrate pH and butterfly bush response to dolomitic lime or steel slag amendment -(Peer Reviewed Journal)
Altland, J.E., Zellner, W.L., Locke, J.C. 2015. Substrate pH and butterfly bush response to dolomitic lime or steel slag amendment. Journal of Environmental Horticulture. 33(2):89-95. - Silicon improves flowering characteristics of sunflower and petunia at low phosphorus rates-(Abstract Only)
Boldt, J.K., Altland, J.E., Zellner, W.L., Locke, J.C. 2015. Silicon improves flowering characteristics of sunflower and petunia at low phosphorus rates. HortScience. 50(9):S142. - Sample container and storage for paclobutrazol monitoring in irrigation water -(Peer Reviewed Journal)
Altland, J.E., Morris, L.A., Boldt, J.K., Fisher, P., Raudales, R. 2016. Sample container and storage for paclobutrazol monitoring in irrigation water. HortTechnology. 25(6):769-773. - Continuing assessment of the 5 day sodium carbonate-ammonium nitrate extraction assay as an indicator test for silicon fertilizers-(Peer Reviewed Journal)
Zellner, W.L., Friedrich, R.L., Kim, S., Sturtz, D.S., Frantz, J., Altland, J.E., Krause, C.R. 2015. Continuing assessment of the 5 day sodium carbonate-ammonium nitrate extraction assay as an indicator test for silicon fertilizers. Journal of AOAC International. 98(4):890-895. - Steel slag raises pH of greenhouse substrates-(Peer Reviewed Journal)
Altland, J.E., Locke, J.C., Zellner, W.L., Boldt, J.K. 2015. Steel slag raises pH of greenhouse substrates. HortScience. 50(4):603-608. - Solute transport through a pine-bark based substrate under saturated and unsaturated conditions-(Peer Reviewed Journal)
Hoskins, T., Owens, J., Fields, J., Altland, J.E., Easton, Z., Niemiera, A. 2014. Solute transport through a pine-bark based substrate under saturated and unsaturated conditions. Journal of the American Society for Horticultural Science. 139:634-641. - A new lime material for container substrates-(Trade Journal)
Altland, J.E. 2014. A new lime material for container substrates. The Buckeye. 25(8):28-31. - Weed control in herbaceous perennial container production-(Trade Journal)
Altland, J.E. 2014. Weed control in herbaceous perennial container production. Greenhouse Product News. 24(9):12-16. - Influence of pine bark particle size and pH on cation exchange capacity-(Peer Reviewed Journal)
Altland, J.E., Locke, J.C., Krause, C.R. 2014. Influence of pine bark particle size and pH on cation exchange capacity. HortTechnology. 24:554-559. - Parboiled rice hull mulch in containers reduces liverwort and bittercress growth -(Peer Reviewed Journal)
Altland, J.E., Krause, C.R. 2014. Parboiled rice hull mulch in containers reduces liverwort and bittercress growth. Journal of Environmental Horticulture. 32(2):59-63. - Should biochar be used in container substrates?-(Trade Journal)
Altland, J.E. 2014. Should biochar be used in container substrates?. Greenhouse Product News. 24(8):14-21. - Research is our middle name-(Trade Journal)
Boldt, J.K., Altland, J.E., Locke, J.C., Krause, C.R. 2014. Research is our middle name. Greenhouse Product News. 24(7):26-31. - Cation exchange capacity of pine bark substrates-(Trade Journal)
Altland, J.E. 2014. Cation exchange capacity of pine bark substrates. The Buckeye. 25(6):40-42. - Current projects of the Application Technology Research Unit (ATRU) USDA-ARS, Wooster/Toledo, Ohio-(Popular Publication)
Krause, C.R., Altland, J.E., Boldt, J.K., Derksen, R.C., Locke, J.C., Ranger, C.M., Reding, M.E., Zhu, H., Zellner, W.L. 2014. Current projects of the Application Technology Research Unit (ATRU) USDA-ARS, Wooster/Toledo, Ohio. The Buckeye. 25(4):18-20. - Steel slag affects pH and Si content of container substrates-(Abstract Only)
Altland, J.E., Zellner, W.L., Locke, J.C. 2014. Steel slag affects pH and Si content of container substrates. American Society of Horticultural Science.Abstract. 49:S297. - Performance of granular collectors for container plants and a comparison of the influence of canopy type on preemergent herbicide deposits -(Peer Reviewed Journal)
Derksen, R.C., Altland, J.E., Oliveira, R.E., Ozkan, H.E. 2014. Performance of granular collectors for container plants and a comparison of the influence of canopy type on preemergent herbicide deposits. Applied Engineering in Agriculture. 30(3):383-389. - Rice hulls for weed control in container crops-(Trade Journal)
Altland, J.E. 2014. Rice hulls for weed control in container crops. The Buckeye. January/February 2014:37-40. - Effect of biochar type on macronutrient retention and release from soilless substrate -(Peer Reviewed Journal)
Altland, J.E., Locke, J.C. 2013. Effect of biochar type on macronutrient retention and release from soilless substrate. HortScience. 48(11):1397-1402. - Gasified rice hull biochar affects nutrition and growth of five horticulture crops in container culture-(Peer Reviewed Journal)
Locke, J.C., Altland, J.E., Ford, C.W. 2013. Gasified rice hull biochar affects nutrition and growth of five horticulture crops in container culture. Journal of Environmental Horticulture. 31(4):195-202. - Gasified rice hull biochar is a source of phosphorus and potassium for container-grown plants -(Peer Reviewed Journal)
Altland, J.E., Locke, J.C. 2013. Gasified rice hull biochar is a source of phosphorus and potassium for container-grown plants. Journal of Environmental Horticulture. 31:138-144. - Strategies for developing sustainable substrates in nursery crop production-(Peer Reviewed Journal)
Bilderback, T.E., Riley, E.D., Jackson, B.E., Kraus, H.T., Fonteno, W.C., Owen, J.S., Altland, J.E., Fain, G.B. 2013. Strategies for developing sustainable substrates in nursery crop production. Acta Horticulturae. 1013:43-56. - Use of ground wheat straw in container nursery substrates to overwinter daylily divisions-(Peer Reviewed Journal)
Locke, J.C., Altland, J.E. 2012. Use of ground wheat straw in container nursery substrates to overwinter daylily divisions. Journal of Environmental Horticulture. 30(4):207-210. - Substituting pine wood for pine bark affects physical properties of nursery substrates-(Peer Reviewed Journal)
Altland, J.E., Krause, C.R. 2012. Substituting pine wood for pine bark affects physical properties of nursery substrates. HortScience. 47(10):1499-1503. - Biochar affects macronutrient leaching from a soilless substrate-(Peer Reviewed Journal)
Altland, J.E., Locke, J.C. 2012. Biochar affects macronutrient leaching from a soilless substrate. HortScience. 47(8):1136-1140. - Change in physical properties of pine bark and switchgrass substrates over time-(Peer Reviewed Journal)
Altland, J.E., Krause, C.R. 2012. Change in physical properties of pine bark and switchgrass substrates over time. Journal of Environmental Horticulture. 30(3):113-117. - Fate of pre-emergence herbicide applications sprayed through containerized hydrangia canopies-(Peer Reviewed Journal)
Derksen, R.C., Altland, J.E., Rennecker, J.C. 2012. Fate of pre-emergence herbicide applications sprayed through containerized hydrangia canopies. Journal of Environmental Horticulture. 30(2):76-82. - Seedling geranium response to nitrogen deprivation and subsequent recovery in hydroponic culture-(Peer Reviewed Journal)
Locke, J.C., Altland, J.E., Bobak, D.M. 2011. Seedling geranium response to nitrogen deprivation and subsequent recovery in hydroponic culture. HortScience. 46(12):1615-1618. - Influence of pumice and plant roots on substrate physical properties over time-(Peer Reviewed Journal)
Altland, J.E. 2011. Influence of pumice and plant roots on substrate physical properties over time. HortTechnology. 21:554-557. - Optimal Spray Application Rates for Ornamental Nursery Liner Production-(Peer Reviewed Journal)
Zhu, H., Altland, J.E., Derksen, R.C., Krause, C.R. 2011. Optimal spray application rates for ornamental nursery liner production. HortTechnology. 21(3):367-375. - Differential response of liverwort (Marchantia polymorpha) tissue to POST-applied quinoclamine-(Peer Reviewed Journal)
Altland, J.E., Wehtje, G., Sibley, J., Miller, M., Gilliam, C., Krause, C.R. 2011. Differential response of liverwort (Marchantia polymorpha) tissue to POST-applied quinoclamine. Weed Technology. DOI: 10.1614/WT-D-10-00135.1. - Use of ground miscanthus straw in container nursery substrates-(Peer Reviewed Journal)
Altland, J.E., Locke, J.C. 2011. Use of ground miscanthus straw in container nursery substrates. Journal of Environmental Horticulture. 29:114-118. - Modification of Switchgrass Substrate pH Using Compost, Peatmoss, and Elemental Sulfur-(Peer Reviewed Journal)
Altland, J.E., Krause, C.R. 2010. Modification of switchgrass substrate pH using compost, peatmoss, and elemental sulfur. HortTechnology. 20:950-956. - Developing Moisture Characteristic Curves and Their Descriptive Functions at Low Tensions for Soilless Substrates-(Peer Reviewed Journal)
Altland, J.E., Owen Jr., J.S., Fonteno, W. 2010. Developing moisture characteristic curves and their descriptive functions at low tensions for soilless substrates. Journal of the American Society for Horticultural Science. 136(6):563-567. - Use of Processed Biofuel Crops for Nursery Substrates-(Peer Reviewed Journal)
Altland, J.E. 2010. Use of Processed Biofuel Crops for Nursery Substrates. Journal of Environmental Horticulture. 28:129-134. - Crop Response to Hybrid Poplar Alternative Soilless Substrate Component for Pacific Northwest Ornamental Container Production-(Abstract Only)
Owen Jr., J.S., Stoven, H.M., Altland, J.E., Pruett, W.J., Klick, J. 2010. Crop Response to Hybrid Poplar Alternative Soilless Substrate Component for Pacific Northwest Ornamental Container Production. HortScience. (8)45:110. - Water Use and Growth of Two Woody Taxa Produced in Varying Indigenous Douglas-Fir Based Soilless Substrates-(Abstract Only)
Owen Jr, J.S., Zazirska-Gabriel, M., Sullivan, D.M., Altland, J.E., Albano, J.P. 2010. Water Use and Growth of Two Woody Taxa Produced in Varying Indigenous Douglas-Fir Based Soilless Substrates. HortScience. (8)45:111. - Suppression of Zinnia Powdery Mildew in the Greenhouse with Silicon-containing Media Amendments-(Abstract Only)
Locke, J.C., Altland, J.E., Frantz, J. 2010. Suppression of Zinnia Powdery Mildew in the Greenhouse with Silicon-containing Media Amendments. Journal of Phytopathology. 100:S74. - Development of Sustainable and Alternative Substrates for Nursery Container Crops-(Abstract Only)
- ARS Nursery and Floricultural Crop Research in Ohio-(Popular Publication)
Krause, C.R., Altland, J.E., Derksen, R.C., Frantz, J., Locke, J.C., Ranger, C.M., Reding, M.E., Zhu, H. 2009. ARS Nursery and Floricultural Crop Research in Ohio. The Buckeye. December 2009, pg 19-21. - Weaning off Bark-(Trade Journal)
Altland, J.E. 2010. Weaning off Bark. Nursery Management Professional. 26(1): 38-42. - Growth, Flowering and Cold Hardiness of Rockrose in Western Oregon-(Peer Reviewed Journal)
Bell, N., Altland, J.E. 2010. Growth, Flowering and Cold Hardiness of Rockrose in Western Oregon. HortTechnology. 20(3): 652-659. - Use of Switchgrass as a Nursery Container Substrate-(Peer Reviewed Journal)
Altland, J.E., Krause, C.R. 2009. Use of Switchgrass as a Nursery Container Substrate. HortScience. 44(7)1861-1865. - Control of Butterfly Bush with Postemergence Herbicides-(Peer Reviewed Journal)
Altland, J.E., Ream, J. 2010. Control of Butterfly Bush with Postemergence Herbicides. Journal of Environmental Horticulture. 238(1):48-52. - Weed Growth and Efficacy of Pre-Applied Herbicides in Alternative Rooting Substrates Used in Container-Grown Nursery Crops -(Peer Reviewed Journal)
Wehtje, G., Altland, J.E., Gilliam, C.H., Marble, S.C., Van Hoogmoed, A.J., Fain, G.B. 2009. Weed Growth and Efficacy of Pre-Applied Herbicides in Alternative Rooting Substrates Used in Container-Grown Nursery Crops. Weed Technology. 23:455-459. - Quantifying Winter Discharge of Controlled Release Fertilizers to Determine Environmental Impact and Plant Uptake-(Abstract Only)
Owen, J.S., Altland, J.E., Scagel, C.F., Stoven, H., Horneck, D., Frantz, J. 2009. Quantifying Winter Discharge of Controlled Release Fertilizers to Determine Environmental Impact and Plant Uptake. Hortscience Proceedings. 2009 ASHS Annual Conference, 25-28 July 2009, St Louis Mo. 44(4):1064. - Use of Switchgrass as the Primary Potting Component in Nursery Containers-(Abstract Only)
Altland, J.E., Frantz, J. 2009. Use of Switchgrass as the Primary Potting Component in Nursery Containers. Hortscience Proceedings. 44:1130. - Preemergence Control of Black Cottonwood in Nursery Containers-(Peer Reviewed Journal)
Altland, J.E. 2009. Preemergence Control of Black Cottonwood in Nursery Containers. Journal of Environmental Horticulture. 27(1):51–55. - Irrigation affects herbicide penetration of shrub canopies-(Proceedings)
Altland, J.E. 2009. Irrigation affects herbicide penetration of shrub canopies. Proceedings of Northeastern Weed Science Society.63:60 - Substrate pH Affects Nutrient Availability in Fertilized Douglas Fir Bark Substrates-(Peer Reviewed Journal)
Altland, J.E., Buamscha, G., Horneck, D. 2008. Substrate pH Affects Nutrient Availability in Fertilized Douglas Fir Bark Substrates. HortScience. 43:2171-2178. - Interaction of Glyphosate and Pelargonic acid in Ready-To-Use Weed Control Products -(Peer Reviewed Journal)
Wehtje, G., Altland, J.E., Gilliam, C. 2009. Interaction of Glyphosate and Pelargonic acid in Ready-To-Use Weed Control Products. Weed Technology. 23:544-549. - Effect of Peat Moss and Pumice on Douglas Fir Bark based Soilless Substrate Physical and Hydraulic Properties-(Peer Reviewed Journal)
Altland, J.E., Magdalena, Z., Owen, J. 2009. Effect of Peat Moss and Pumice on Douglas Fir Bark based Soilless Substrate Physical and Hydraulic Properties. HortScience. 44(3):874-878. - Interaction of Glyphosate and Diquat in Ready-To-Use Weed Control Products-(Peer Reviewed Journal)
Altland, J.E., Glenn, W., Gilliam, C. 2008. Interaction of Glyphosate and Diquat in Ready-To-Use Weed Control Products. Weed Technology. 22(3):472-476. - Nitrogen Availability in Fresh and Aged Douglas Fir Bark-(Peer Reviewed Journal)
Altland, J.E., Buamscha, G., Sullivan, D., Horneck, D. 2008. Nitrogen Availability in Fresh and Aged Douglas Fir Bark. HortTechnology. 18(4):619-623. - Liverwort (Marchantia polymorpha) Response to Quinoclamine in a Pine Bark Substrate-(Peer Reviewed Journal)
Altland, J.E., Wehtje, G., Gilliam, C., Mckee, M. 2008. Liverwort (Marchantia polymorpha) Response to Quinoclamine in a Pine Bark Substrate. Weed Science. 56(5):762-766. - Container Height and Douglas Fir Bark Texture Affect Substrate Physical Properties-(Peer Reviewed Journal)
Altland, J.E., Owen, J. 2008. Container Height and Douglas Fir Bark Texture Affect Substrate Physical Properties. HortScience. 43:505-508. - Nutrient Availability from Douglas Fir Bark in Response to Substrate pH-(Peer Reviewed Journal)
Altland, J.E., Buamscha, G. 2008. Nutrient Availability from Douglas Fir Bark in Response to Substrate pH. HortScience. 43:478-483. - COMPETITION FROM BLACK COTTONWOOD IN NURSERY CONTAINERS-(Proceedings)
Altland, J.E. 2008. Competition from black cottonwood in nursery containers. Proceedings of Northeastern Weed Science Society. 62:47. - Comparing digital software to human observation for estimating weed cover in nursery containers-(Proceedings)
Altland, J.E. 2008. Comparing digital software to human observation for estimating weed cover in nursery containers. Weed Science Society of America Meeting Abstracts. - Current projects of the Application Technology Research Unit-(Abstract Only)
Krause, C.R., Altland, J.E., Derksen, R.C., Frantz, J., Locke, J.C., Ranger, C.M., Reding, M.E., Zhu, H. 2007. Current projects of the Application Technology Research Unit. OFA Bulletin. No.904:24-25. - Cottonwood Control in Nursery Containers-(Abstract Only)
Altland, J.E. 2008. Cottonwood Control in Nursery Containers. Southern Nursery Association Proceedings. - Influence of Container Mulches on Irrigation and Nutrient Management-(Peer Reviewed Journal)
Altland, J.E., Lanthier, M. 2007. Influence of Container Mulches on Irrigation and Nutrient Management. Journal of Environmental Horticulture. 25:234-238. - Continuous columns for determining moisture characteristic curves of soilless substrates-(Abstract Only)
Altland, J.E., Mielcarek, M., Owen, J., Zazirska, M. 2007. Continuous columns for determining moisture characteristic curves of soilless substrates. Southern Nursery Association Proceedings. 52:538-542.
- (Clicking on the reprint icon
