Évaluation de trois contenants pour la production de plants d'espèces feuillues de fortes dimensions

Abstract

Trois types de contenants de diffkrents volumes (Polymos 15,Three types of containers of different volumes (Polymos 15, 700 cm3; Polymos 1 2 , l 000 cm3; WhitcombMD, 3 500 cm3) ont 700 cm3; Polymos 12,1,000 cm3; whitcomb@, 3,500 cm3) were 6tk mis B l'essai pour produire des plants d'arbres feuillus de fortes tested to produce large hardwood seedlings. Studies of growth and dimensions. L'ktude des rksultats de croissance et du dkvelopperoot development of three species, white ash (Frauinus americum ment racinaire de trois espbces, frsne blanc (Fruxinus americana L.), bur oak (Quercus macrocarpa Michx.) and northern red oak L.), chCne B gros fruits (Quercus macrocarpa Michx.) et ch&ne (Quercus rubra L.) were used to assess containers after two rouge (Quercus rubra L.), a servi B l'6valuation des contenants growing seasons in an unheated plastic shelter. The mean height aprbs deux ans de croissance. La hauteur moyenne des plants proof seedlings increased with the volume of the containers. The total duits sous I'abri d'un tunnel de plastique non-chauffk, &it plus dry mass of seedlings at 55 cm in height was more important in Blevke pour les contenants de plus grand volume. La masse the larger container; the total root mass and the proportion of sec&he totale des plants ayant aeint une hauteur de 55 a augment& ondary roots were higher in the container of greater volume. For aussi avec Ie volume du contenant; la masse racinaire et la prothe two species of oak, the 3,500 cm3 container produced duction de racines secondaires Ctaient plus &levees dans le plus seedlings with a taproot showing a number of deviations when grand contenant. Pour les deux espbces de chsnes, le contenant touching the bottom of the container. White ash, a species with de 3 500 cm3 a produit des plants dent la racine pivotante presena fibrous root system, showed a higher deviation index in the smalltait de nombreuses dkviations induites au fond du contenant. Le er containers. The openings on the sides of the square-shaped fiene, dent le dBveloppement racinaire est fascicu16 montrait un Whitcomb@ containers were effective for the air-pruning of secindice de dkviation plus Clevk dans les contenants de plus faible o n d~ lateral roots of @ a with a taproot and their volume aUowed volume. Les ouvertures lathales des contenants carrks du type for an important root miss. However, the flat bottom with openWhitcomb ant permis de bien cemer les racines secondaires des ings at each of the four comers did not prevent deviation of the es@ces B racine pivotante. Le volume de la cavite a favoris6 forte-Proot. IntroductionDepuis plusieurs anntes, diverses mtthodes de culture ont Ctt exptrimenttes afin de maximiser la production de plants forestiers de qualit6 (Hathaway et Whitcomb 1977;Tinus 1980;Klingaman et King 1983; Whitcomb 1984;Labrecque et Popovich 1987,1988 Gingras 1993). La production en contenant comporte plusieurs avantages, le principal Ctant qu'il conduit B l'ttablissement d'un systkme racinaire prottgt qui se dtveloppe avec un minimum de contrain...

Container characteristics influence Pinus pinea seedling development in the nursery and field

“…Similar findings were reported for Tsuga heterophylla (O'Reilly et al, 1994) and Fraxinus americana, Quercus macrocarpa y Q. rubra (Cogliastro et al, 1995). Container volume had a strong positive effect on the size of Pinus contorta (Endean and Carlson, 1975) and Picea glauca (Carlson and Endean, 1976) in the nursery.…”

“…Containers with narrow diameters and great depth tend to have problems with rootball ventilation and often produce poor seedlings (Marien and Drovin, 1978). Others have found a significant relationship between the depth/diameter index of the container and the size of the plant (Carlson and Endean, 1976;Hanson et al, 1987;Cogliastro et al, 1995). We found a similar relationship between this depth/diameter ratio and both the sturdiness index and seedling diameter of Pinus pinea (Fig.…”

Potential of new planting container in Quercus robur seedlings production – first report

“…However, for species with larger seeds, faster growth, and strongdeveloped root system such as oaks, it is best to use the larger containers. There is a lot of research that provides information about positive effect of larger container volume on seedlings height and root collar diameter inside Quercus species (Hanson et al 1987;Cogliastro et al 1995;Orešković et al 2006;Jelić et al 2014;Popović et al 2014). Although height and root collar diameter are most used morphological parameters which represent features for seedling quality evaluation (Ivetić et al 2016) and plant growth on the field (Grossnickle and MacDonald 2018), root system size cannot be marginalized.…”