Mycorrhizal inoculation methods on Lutz spruce seedlings for afforestation of treeless landscape in Iceland
Seedling mortality is a great problem in afforestation in Iceland and is most severe in a treeless landscape. It is not uncommon for new afforestation areas to have 30 – 40 % mortality in seedlings in the first five years. One of the causes to this low survival is the lack of mycorrhizal fungi in th...
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Norwegian University of Life Sciences, Ås
2018
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Online Access: | http://hdl.handle.net/11250/2566136 |
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ftunivmob:oai:nmbu.brage.unit.no:11250/2566136 2023-05-15T16:47:39+02:00 Mycorrhizal inoculation methods on Lutz spruce seedlings for afforestation of treeless landscape in Iceland Böðvarsdóttir, Hlíf Solheim, Halvor Óskarsson, Úlfur Iceland 2018 application/pdf http://hdl.handle.net/11250/2566136 eng eng Norwegian University of Life Sciences, Ås http://hdl.handle.net/11250/2566136 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 43 Mycorrhiza Inoculation Winter storage Field performance VDP::Agriculture and fishery disciplines: 900::Agriculture disciplines: 910::Forestry: 915 Master thesis 2018 ftunivmob 2021-09-23T20:16:43Z Seedling mortality is a great problem in afforestation in Iceland and is most severe in a treeless landscape. It is not uncommon for new afforestation areas to have 30 – 40 % mortality in seedlings in the first five years. One of the causes to this low survival is the lack of mycorrhizal fungi in the soil. In this study, effects of mycorrhizal inoculation treatments where examined on one summer old Lutz spruce (Picea x Lutzii) in two study sites in the South-West of Iceland. Methods were categorized into three treatments 0) Un-inoculated (control), 1) Inoculation in autumn and 2) inoculation in spring. The effect of winter storage on field performance was also examined. The storage methods were, outside winter storage in nursery and plant freezer storage. After one year in the field a subsample of the seedlings was examined. Three morphotypes were found, mycorrhizal root tips were counted and colonization was calculated. The analyses showed that inoculation treatments increased mycorrhizal colonization and generally increased root growth. Winter storage seemed to have negative effect on shoot growth, though not statistically explained seedlings stored in plant freezer seemed to have more dieback after the first winter. Mikil afföll hafa verið eftir gróðursetningu á flestum stöðum á landinu og eru afföllin mest þar sem plantað er í trjálaust mólendi. Það er ekki óalgengt að afföll plantna séu um 30 - 40 % fyrstu fimm árin eftir útplöntun. Ein af ástæðum þessara mikilla affalla er vöntun á gagnlegum rórarsveppi í jarðveginum. Í þessari rannsókn voru áhrif svepprótar smitunnar á sumar gamlar Sitka bastarðs plöntur (Picea x lutzii) metin á tveimur tilraunastöðum á suð-vestur landi. Smitunnar meðferðum var deil í þrennt 0) Ósmitaðar (kontról), 1) smitaðar að hausti, og 2) smitaðar að vori. Áhrif vetrargeymslu voru einnig könnuð. Yfirvetrunnar aðferðir voru: úti undir plasti í gróðrarstöð og í frysti geymslu. Einu ári eftir útplöntun var hluti af plöntunum rannsakaðar, svepprætur greindar og taldar og þéttleiki reiknaður. Út úr greiningu gagna kom í ljós að það var marktækur munur á þéttleika svepprótar eftir smitunnar meðferðum og að smitun jók rótar vöxt. Yfirvetrunn í frysti geymslu virtist hafa áhrif á vöxt plantnanna þar sem plöntur yfirvetraðar í frysti geymslu kólu meira eftir fyrsta veturinn en þær sem voru úti yfir veturinn, enn þetta var ekki hægt útskýra tölfræðilega. submittedVersion M-PV Master Thesis Iceland Open archive Norwegian University of Life Sciences: Brage NMBU |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
op_collection_id |
ftunivmob |
language |
English |
topic |
Mycorrhiza Inoculation Winter storage Field performance VDP::Agriculture and fishery disciplines: 900::Agriculture disciplines: 910::Forestry: 915 |
spellingShingle |
Mycorrhiza Inoculation Winter storage Field performance VDP::Agriculture and fishery disciplines: 900::Agriculture disciplines: 910::Forestry: 915 Böðvarsdóttir, Hlíf Mycorrhizal inoculation methods on Lutz spruce seedlings for afforestation of treeless landscape in Iceland |
topic_facet |
Mycorrhiza Inoculation Winter storage Field performance VDP::Agriculture and fishery disciplines: 900::Agriculture disciplines: 910::Forestry: 915 |
description |
Seedling mortality is a great problem in afforestation in Iceland and is most severe in a treeless landscape. It is not uncommon for new afforestation areas to have 30 – 40 % mortality in seedlings in the first five years. One of the causes to this low survival is the lack of mycorrhizal fungi in the soil. In this study, effects of mycorrhizal inoculation treatments where examined on one summer old Lutz spruce (Picea x Lutzii) in two study sites in the South-West of Iceland. Methods were categorized into three treatments 0) Un-inoculated (control), 1) Inoculation in autumn and 2) inoculation in spring. The effect of winter storage on field performance was also examined. The storage methods were, outside winter storage in nursery and plant freezer storage. After one year in the field a subsample of the seedlings was examined. Three morphotypes were found, mycorrhizal root tips were counted and colonization was calculated. The analyses showed that inoculation treatments increased mycorrhizal colonization and generally increased root growth. Winter storage seemed to have negative effect on shoot growth, though not statistically explained seedlings stored in plant freezer seemed to have more dieback after the first winter. Mikil afföll hafa verið eftir gróðursetningu á flestum stöðum á landinu og eru afföllin mest þar sem plantað er í trjálaust mólendi. Það er ekki óalgengt að afföll plantna séu um 30 - 40 % fyrstu fimm árin eftir útplöntun. Ein af ástæðum þessara mikilla affalla er vöntun á gagnlegum rórarsveppi í jarðveginum. Í þessari rannsókn voru áhrif svepprótar smitunnar á sumar gamlar Sitka bastarðs plöntur (Picea x lutzii) metin á tveimur tilraunastöðum á suð-vestur landi. Smitunnar meðferðum var deil í þrennt 0) Ósmitaðar (kontról), 1) smitaðar að hausti, og 2) smitaðar að vori. Áhrif vetrargeymslu voru einnig könnuð. Yfirvetrunnar aðferðir voru: úti undir plasti í gróðrarstöð og í frysti geymslu. Einu ári eftir útplöntun var hluti af plöntunum rannsakaðar, svepprætur greindar og taldar og þéttleiki reiknaður. Út úr greiningu gagna kom í ljós að það var marktækur munur á þéttleika svepprótar eftir smitunnar meðferðum og að smitun jók rótar vöxt. Yfirvetrunn í frysti geymslu virtist hafa áhrif á vöxt plantnanna þar sem plöntur yfirvetraðar í frysti geymslu kólu meira eftir fyrsta veturinn en þær sem voru úti yfir veturinn, enn þetta var ekki hægt útskýra tölfræðilega. submittedVersion M-PV |
author2 |
Solheim, Halvor Óskarsson, Úlfur |
format |
Master Thesis |
author |
Böðvarsdóttir, Hlíf |
author_facet |
Böðvarsdóttir, Hlíf |
author_sort |
Böðvarsdóttir, Hlíf |
title |
Mycorrhizal inoculation methods on Lutz spruce seedlings for afforestation of treeless landscape in Iceland |
title_short |
Mycorrhizal inoculation methods on Lutz spruce seedlings for afforestation of treeless landscape in Iceland |
title_full |
Mycorrhizal inoculation methods on Lutz spruce seedlings for afforestation of treeless landscape in Iceland |
title_fullStr |
Mycorrhizal inoculation methods on Lutz spruce seedlings for afforestation of treeless landscape in Iceland |
title_full_unstemmed |
Mycorrhizal inoculation methods on Lutz spruce seedlings for afforestation of treeless landscape in Iceland |
title_sort |
mycorrhizal inoculation methods on lutz spruce seedlings for afforestation of treeless landscape in iceland |
publisher |
Norwegian University of Life Sciences, Ås |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2566136 |
op_coverage |
Iceland |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
43 |
op_relation |
http://hdl.handle.net/11250/2566136 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1766037734095323136 |