Root-freezing damage in the containerized nursery: impact on plantation sites – A review

Bigras, Francine J.; Dumais, Daniel

doi:10.1007/s11056-005-4423-6

Cited by 34 publications

(16 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fine roots were considerably less frost tolerant than the aboveground organs in accordance with previous studies (Bigras and Dumais 2005). Slight hardening of the fine roots was observed in soil temperatures above zero but major hardening occurred at soil temperatures just below zero.…”

Section: Discussionsupporting

confidence: 91%

“…In the present study, the root samples included abundant mycorrhizal branches which may affect the results. According to previous studies, woody roots of coniferous trees are more freezing tolerant than their non-woody, white fine roots (Ryyppö et al 1998, Bigras andDumais 2005) but there are no studies on the role of mycorrhizal fungi in the freezing tolerance.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Cold acclimation of Norway spruce roots and shoots after boron fertilization

Räisänen¹,

Repo²,

Lehto³

2009

Silva Fenn.

View full text Add to dashboard Cite

Boron deficiency, manifested as shoot dieback, is a problem in conifer stands growing on soils with high nitrogen availability in Fennoscandia. Earlier observations on Norway spruce (Picea abies L. Karst.) suggest that freezing tolerance is decreased by boron deficiency. Here, the effect of boron fertilization on cold acclimation of Norway spruce was studied in a young stand with initially low boron status two years after fertilization. Buds, stems, needles and roots were collected at five sampling times during cold acclimation and subsequently exposed to series of freezing temperatures. Lethal temperatures of organs were assessed by electrolyte leakage method (EL) and visual scoring of damage (VS). Freezing tolerance of buds was measured also by differential thermal analysis (DTA).The mean boron (B) concentration in needles was 4 mg kg -1 in unfertilized and 21 mg kg -1 in B-fertilized trees while critical level of B deficiency is considered to be 5 mg kg -1 . The risk for increased freezing injuries in the low-B trees was not evident since all trees achieved cold hardiness that would be sufficient in central Finland. At two sampling times out of five, shoots or stem of B-fertilized trees were slightly more freezing tolerant than non-fertilized trees. However, the present study does not give strong evidence for the hypothesis that decreased freezing tolerance in B deficiency would be a triggering factor for leader dieback in Norway spruce at the B levels studied.

show abstract

Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Cold acclimation of Norway spruce roots and shoots after boron fertilization

Räisänen¹,

Repo²,

Lehto³

2009

Silva Fenn.

View full text Add to dashboard Cite

show abstract

“…II) may be the result of a retranslocation to the root system sink [12]. This organ has the highest nutrient demand at that time, but is also less cold-tolerant than shoots [3,13,20]. This factor might explain the significant relationship found between the RGP and the field results (February and Growth Chamber).…”

Section: Discussionmentioning

confidence: 98%

“…II). Each nursery had a particular growing regime for this species, although in all cases the stock was 1 + 0 (sown between March and May), cultivated in the open air, in a peat or peat-coconut fibre mix in 200 cm 3 per seedling containers, and the fertilization regime differed among nurseries. Ca and Hu stocklots were fertilized by adding slow-release fertilizer (Plantacote-Pluss c 14-8-15) to the growing media at a dose of 3 kg m −3 .…”

Section: Plant Materials and Seedling Qualitymentioning

confidence: 99%

Relation entre potentiel de croissance racinaire et performance du pin d’Alep en plantation

Campo¹,

Navarro-Cerrillo²,

Hermoso³

et al. 2007

Ann. For. Sci.

View full text Add to dashboard Cite

-Commercial stocks of Aleppo pine in Spain vary in quality, but there is no accepted standard for evaluating quality. A RGP test was applied to six commercial seedling stocklots at two dates (November, February) and under two test conditions (growth-chamber, greenhouse). The RGP's predictive ability was evaluated on two contrasting sites. There was a considerable variation in the RGP depending on application date, test conditions and stock factors. The RGP results for November were correlated with each other but they did not explain outplanting performance. The February results in the growth-chamber correlated well with survival at both sites. Regression models explained survival both in the lower (R 2 = 97%) and in the higher (R 2 = 92%) quality sites. RGP has a valid predictive ability for this species although it is sensitive to the test conditions. In this sense, a shorter and more intensive test performed right before planting may be more reliable.outplanting / seedling quality / site quality / prediction model Résumé -Relation entre potentiel de croissance racinaire et performance du pin d'Alep en plantation. Les productions commerciales de plants de pin d'Alep en Espagne présentent une importante variabilité de qualité, mais aucun test standardisé d'évaluation de la qualité des plants n'a été élaboré. Un test de potentiel de croissance racinaire a été conduit sur des plants de six lots commerciaux de pin d'Alep à deux dates (novembre et février) et dans deux conditions de test différentes (chambre de croissance et serre) Le potentiel de croissance racinaire (RGP) a été évalué sur deux sites écologiquement contrastés. RGP a fortement varié avec la date, les sites de plantation et les lots de plants. Les évaluations de RGP étaient corrélées entre elles en novembre, sans expliquer les taux de réussite en plantation. Les valeurs de RGP évaluées en février en chambre de croissance ont présenté de bonnes corrélations avec la survie des plants dans les deux sites. Les modèles de régression ont expliqué la survie des plants à la fois dans le site faiblement productif (R 2 = 97 %) et dans le site productif (R 2 = 92 %). RGP présente un fort potentiel prédictif cette espèce bien qu'il soit sensible aux conditions de test. Dans ce sens, un test plus court et plus intensif réalisé bien avant la plantation peut être plus fiable. plantation / qualité des plants / qualité du site / modèle prédictif

show abstract

“…Both RWC and shoot:root ratio could be considered reliable indicators of potential initial survival and are closely associated with establishment success . Several processes involved in drought tolerance confer also an increase in cold tolerance (Bigras & Dumais, 2005;Moraga et al, 2006). It has been observed that drought resistant genotypes of E. globulus showed greater cold tolerance than drought susceptible ones (Costa e Silva et al, 2009).…”

Section: Drought Acclimationmentioning

confidence: 99%