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      Crecimiento de Pinus montezumae Lamb. en vivero influenciado por diferentes mezclas de sustratos Translated title: Nursery growth of Pinus montezumae Lamb. influenced by different substrate mixtures

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          Abstract

          El aserrín y la corteza de pino, subproductos de la industria forestal, se pueden usar como sustrato y sustituir a la turba en la producción de planta en viveros. Por tanto, se evaluó el crecimiento de plántulas de Pinus montezumae Lamb. producidas en contenedor en mezclas de sustratos compuestas con corteza de pino y aserrín que formaron nueve mezclas y un tratamiento testigo (60 % turba + 20 % perlita + 20 % vermiculita), y se determinaron características físicas y químicas. El pH osciló entre 4.2 y 6.3, la conductividad eléctrica de 0.25 a 3.98 dSm-1, la porosidad total de 69 a 81 %, la porosidad de aireación de 26 a 34 %, la porosidad de retención de humedad de 36 a 52 %, y la densidad aparente de 0.17 a 0.32 g cm-3. En la curva de liberación de agua, el agua no disponible varió de 8 a 46 %, el agua fácilmente disponible de 6 a 18 %, el agua de reserva de 3 a 8 % y el agua difícilmente disponible de 18 a 37 % en todos los tratamientos. Hubo diferencias significativas entre los tratamientos en el crecimiento de las plántulas a 10 meses de edad: el diámetro varió de 9.7 a 11.5 mm, el peso seco aéreo de 1.97 y 2.87 g, y el peso seco de raíz de 3.51 a 61.05 g. La relación parte aérea/raíz en todos los tratamientos fue de 1 a 2.5. Las mezclas con crecimientos similares al testigo y con características físicas adecuadas para producir planta de esta especie fueron T9 (aserrín 70 % + turba 10 % + perlita 10 % + vermiculita 10 %) y T1 (corteza 10 % + aserrín 70 % + perlita 10 % + vermiculita 10 %). Las mezclas de aserrín y corteza generaron plantas con dimensiones apropiadas para ser llevadas a campo. Esto permite eliminar el uso de turba como sustrato en la producción de planta forestal.

          Translated abstract

          Pine sawdust and bark, wood waste products of the forest industry, can be used as substrate and substitute peat moss in the production of nursery plants. Therefore, growth of Pinus montezumae Lamb. seedlings was assessed in containers with substrates composed of pine bark and sawdust, which were used to form nine mixtures. There was also a control treatment (60 % peat moss+ 20 % perlite + 20 % vermiculite). Physical and chemical characteristics were determined. pH oscillated between 4.2 and 6.3, electrical conductivity was 0.25 to 3.98 dSm-1, total porosity was 69 to 81 %, aeration porosity was 26 to 34 %, water holding porosity was 36 to 52 %, and bulk density was 0.17 to 0.32 g cm-3. On the water release curve, available water varied from 8 to 46 %, easily available water 6 to 19 %, reserve water 3 to 8 %, and less readily available water 18 to 37 % in all treatments. There were significant differences among treatments in seedling growth at 10 months of age: diameter varied from 9.7 to 11.5 mm, shoot dry weight 1.97 to 2.87 g, and root dry weight 3.51 to 61.05 g. The shoot/root ratio in all of the treatments was 1 to 2.5. The mixtures supporting growth similar to the control and adequate physical characteristics for producing plants of this species were T9 (sawdust 70 % + peat 10 % + perlite 10 % + vermiculite 10 %) and T1 (bark 10 % + sawdust 70 % + perlite 10 % + vermiculite 10 %). The mixtures of sawdust and bark generated plants with dimensions appropriate for transplant to the field. This allows to eliminate the utilization of peat moss as substrate in the production of forest plants.

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          Most cited references35

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          National inventory of organic wastes for use as growing media for ornamental potted plant production: case study in Spain.

          An inventory of materials suitable for use as growing media for ornamental potted plant production in Spain has been prepared. Special attention has been paid to solid organic wastes generated by production, industrial and consumer activities. Information obtained from this study has been organised into two data bases. Data base 1 contains the "General Characteristics" file of more than 105 materials. In this file, data are available regarding generation points, material availability, uses, cost, disposal expenses, etc. Data base 2 is comprised of the "Specific Properties" file of 63 materials selected from data base 1. The main physical, chemical and biological properties of these materials as container media have been characterised, and the results obtained have been compiled. Finally, a computerised data bank has been created which can be found in the home page of the Spanish Ministry of Agriculture, Fisheries and Food (http://agritel2.mapya.es/sustratos/).
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            THE PHYSICAL PROPERTIES OF THE SUBSTRATES IN HORTICULTURE

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              METHOD FOR MEASURING THE WATERRELEASE CURVE OF ORGANIC SUBSTRATES.

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                Author and article information

                Journal
                agro
                Agrociencia
                Agrociencia
                Colegio de Postgraduados (Texcoco, Estado de México, Mexico )
                1405-3195
                2521-9766
                September 2014
                : 48
                : 6
                : 627-637
                Affiliations
                [01] Montecillo Estado de México orgnameColegio de Postgraduados orgdiv1Campus Montecillo México
                Article
                S1405-31952014000600005 S1405-3195(14)04800600005
                8b6ce23c-ecf5-4205-97f4-4800ec14e537

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : June 2014
                : July 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 33, Pages: 11
                Product

                SciELO Mexico

                Categories
                Recursos naturales renovables

                nursery,Aserrín,corteza,Pinus montezumae,turba,vivero,Sawdust,bark,peat moss

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