Field Performance of Pinus radiata D. Don Produced in Nursery with Different Types of Containers

Abstract

Abstract. We have studied the development in nurseries of containerized Pinus radiata produced with different container systems in order to choose the most suitable system for producing wellbalanced plants with an optimal root system. At the end of the production period, significant differences were found in morphological responses among the seedlings to the various container characteristics. Seedlings grown in containers that permitted lateral air puning presented less growth and lower biomass production. However, root deformations were more frequent and severe in plants produced in closed-wall containers. Field performance was likewise mainly affected by container type and plant growth rate, as faster grown plants showed more problems of stability than plants with a balanced root and stem development.

Container effects on growth and biomass allocation inQuercus roburandJuglans regiaseedlings

“…Seedlings in the AIR-2, a container of similar width-depth combination and a slightly lower volume than Tubex, were smaller. Containers with strong air pruning can cause plant stress due to loss of root tips and less new root development (Ortega et al 2006;Amoroso et al 2010); the narrow and deep shape of AIR-2 could have enhanced the effects of these two factors, resulting in reduced seedling growth.…”

Effects of a deep container on morpho-functional characteristics and root colonization in Quercus suber L. seedlings for reforestation in Mediterranean climate

“…Seedlings in CCL-30 containers showed a longer tap root, allowing the tip of the tap root to reach deeper layers than CCS-18 containers. This favours the colonization of the deepest horizons by new roots due to the amount of roots located at the bottom of the root plug (Biran and Eliassaf, 1980;Ortega et al, 2006). At outplanting, this deeper positioning of the root system may help to avoid or reduce the competition for water with herbaceous plants in the top soil horizons, which can be an important factor limiting seedling performance in the field (Grossnickle, 2005).…”

INFLUÊNCIA DO MÉTODO DE PROPAGAÇÃO E TIPOS DE RECIPIENTES NA QUALIDADE DE MUDAS DE Pinus maximinoi H. E. Moore

“…Ainda considerando os recipientes de 115 cm³, não houve diferença significativa na ausência ou presença de aberturas laterais ao analisar a variável PST (Tabela 5). Ortega et al, (2006), avaliando produção de mudas de Pinus radiata, observaram resultados semelhantes, obtendo menor crescimento e menor produção de biomassa aérea e de raízes ao utilizar recipientes com aberturas laterais, comparativamente a recipientes sem aberturas laterais. O fator presença de aberturas laterais apresentou o mesmo padrão de resultados em relação às variáveis PSR e PST, sendo que quanto maiores os recipientes, maiores os valores de peso seco obtidos, sendo estatisticamente distintos entre 55 cm³ e 115 cm³ (Tabela 5).…”