Optimizing Temperature and Humidity for Rooting Hybrid Hazelnuts fromHardwood StemCuttings

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2 Scopus citations

Abstract

Hybrid hazelnuts are being developed as a new crop for the Upper Midwest for their ecological and economic value, but lack of economically viable propagation methods is a significant bottleneck to their wide scale adoption. In previous trials we found that hardwood stem cuttings could be propagated in low cost humidity tents constructed of molded plastic tubs covered with white 70% shade plastic. When the plastic was sealed tightly at the sides, these tubs maintained relative humidity near saturation, but also tended to overheat. This trial experimented with the use of ordinary household humidifiers as an alternative way of maintaining humidity while avoiding overheating. We found that it is not necessary to maintain RH near 100% as we had been doing when we kept thehumidity tents tightly sealed. Stem survival and, as a consequence, rooting were improved in vented tents in which humidity was maintained with humidifiers, though these required much more management than the sealed tents.

Original languageEnglish (US)
Pages (from-to)44-49
Number of pages6
JournalJournal of Environmental Horticulture
Volume37
Issue number2
DOIs
StatePublished - Jun 2019

Bibliographical note

Funding Information:
This research was part of USDA-NIFA Specialty Crop Research Initiative grant Award no 2011-51181-30681. It was also made possible by the University of Minnesota's Undergraduate Research Opportunities Program (UROP), which enabled an undergraduate, Shan Zhong, to have a meaningful role in this research. Thanks also to Kevin Betts for keeping the greenhouse going.

Funding Information:
1Received for publication January 20, 2019; in revised form May 10, 2019. Acknowledgements: This research was part of USDA-NIFA Specialty Crop Research Initiative grant Award no 2011-51181-30681. It was also made possible by the University of Minnesota’s Undergraduate Research Opportunities Program (UROP), which enabled an undergraduate, Shan Zhong, to have a meaningful role in this research. Thanks also to Kevin Betts for keeping the greenhouse going. 2Research Associate, PhD, Department of Agronomy and Plant Genetics, University of Minnesota. brau0259@umn.edu, corresponding author. 3Professor, Department of Agronomy and Plant Genetics, University of Minnesota.

Publisher Copyright:
© 2019 Horticultural Research Institute.

Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.

Keywords

  • Corylus americana (Walter)
  • Corylus avellana (L.)
  • Indole-3-butyric acid
  • Propagation
  • Rooting

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