Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia)
Reforestation in Mexico is important to recuperate the productivity of deforested and degraded areas and to maintain that of commercial forests. Only 40% of reforested areas have an acceptable level of survival. Characteristics of seedlings out planted, including shoot/root ratio, are essential fact...
| Hlavní autoři: | , , |
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| Médium: | Online |
| Jazyk: | spa |
| Vydáno: |
Instituto de Ecología, A.C.
2016
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| On-line přístup: | https://myb.ojs.inecol.mx/index.php/myb/article/view/1169 |
| _version_ | 1799769217958936576 |
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| author | Negreros-Castillo, Patricia Apodaca-Martinez, Maribel Mize, Carl W. |
| author_facet | Negreros-Castillo, Patricia Apodaca-Martinez, Maribel Mize, Carl W. |
| author_sort | Negreros-Castillo, Patricia |
| collection | MYB |
| description | Reforestation in Mexico is important to recuperate the productivity of deforested and degraded areas and to maintain that of commercial forests. Only 40% of reforested areas have an acceptable level of survival. Characteristics of seedlings out planted, including shoot/root ratio, are essential factors for achieving the desired results of high survival and good growth after transplanting. This study describes the characteristics of mahogany (Swietenia macrophylla King), Spanish cedar (Cedrela odorata L.) and “roble” (Tabebuia rosea (Bertol.) DC when planted at two densities (100 and 50 plants/m2) and in two substrates [soil, and soil + compost (S+C)] in a nursery. The S+C treatment had a significant effect on diameter, height, root biomass and the shoot/root ratio. In soil 76% of seedlings had a shoot/root ratio of 3.0 or less and in S+ C, 21% of seedlings had a ratio less than 3.0. For conifers a ratio of 2/1 is recommended for dry sites and 4/1 for humid sites. For broadleaves the optimum shoot/root ratio is not known. Two months after transplanting in the field more Swietenia produced with the S+C treatment died but less Cedrela and Tabebuia seedlings did. For the three species the seedlings that died were smaller. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-1169 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2016 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-11692022-11-30T00:21:04Z Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia) Efecto de sustrato y densidad en la calidad de plántulas de cedro, caoba y roble Negreros-Castillo, Patricia Apodaca-Martinez, Maribel Mize, Carl W. Tropical woods Reforestation shoot/root ratio forest nursery Maderas tropicales reforestación relación tallo/raíz vivero forestal Reforestation in Mexico is important to recuperate the productivity of deforested and degraded areas and to maintain that of commercial forests. Only 40% of reforested areas have an acceptable level of survival. Characteristics of seedlings out planted, including shoot/root ratio, are essential factors for achieving the desired results of high survival and good growth after transplanting. This study describes the characteristics of mahogany (Swietenia macrophylla King), Spanish cedar (Cedrela odorata L.) and “roble” (Tabebuia rosea (Bertol.) DC when planted at two densities (100 and 50 plants/m2) and in two substrates [soil, and soil + compost (S+C)] in a nursery. The S+C treatment had a significant effect on diameter, height, root biomass and the shoot/root ratio. In soil 76% of seedlings had a shoot/root ratio of 3.0 or less and in S+ C, 21% of seedlings had a ratio less than 3.0. For conifers a ratio of 2/1 is recommended for dry sites and 4/1 for humid sites. For broadleaves the optimum shoot/root ratio is not known. Two months after transplanting in the field more Swietenia produced with the S+C treatment died but less Cedrela and Tabebuia seedlings did. For the three species the seedlings that died were smaller. La reforestación en México es importante para recuperar la producción de las áreas deforestadas y degradadas y para mantener la de los bosques comerciales. Sólo 40% de la reforestación tienen un nivel aceptable de supervivencia. Las características de las plántulas que se utilizan, incluyendo la relación tallo/raíz de la plántula, deben tomarse en cuenta para lograr los resultados deseados (alta supervivencia y buen crecimiento en campo). Se describen las características de plántulas de Swietenia macrophylla King, Cedrela odorata L. y Tabebuia rosea ( Bertol.) DC bajo dos densidades (100 y 50 plantas/m2) y dos sustratos [suelo y suelo + composta (S+C)] en vivero. El tratamiento S+C tuvo un efecto significativo en el crecimiento del diámetro, altura, peso de la raíz y la relación tallo/raíz de cada una de las especies. En suelo 76% de las plántulas tienen la relación tallo/raíz =< 3 y en S+C 21 % presentaron una relación tallo/raíz < 3. Para coníferas se recomienda tallo/raíz 2:1 para sitios secos y 4:1 para húmedos. Para las latifoliadas no se sabe cual es la relación tallo: raíz óptima. Dos meses después de llevarlas a campo, murieron más plántulas de Swietenia en S+C pero menos plántulas de Cedrela y Tabebuia. De las tres especies murieron las más pequeñas. Instituto de Ecología, A.C. 2016-08-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf https://myb.ojs.inecol.mx/index.php/myb/article/view/1169 10.21829/myb.2010.1621169 Madera y Bosques; Vol. 16 No. 2 (2010): Verano 2010; 7-18 Madera y Bosques; Vol. 16 Núm. 2 (2010): Verano 2010; 7-18 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/1169/1349 Derechos de autor 2016 Madera y Bosques |
| spellingShingle | Negreros-Castillo, Patricia Apodaca-Martinez, Maribel Mize, Carl W. Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia) |
| title | Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia) |
| title_full | Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia) |
| title_fullStr | Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia) |
| title_full_unstemmed | Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia) |
| title_short | Effect of substrate and density on the quality of seedlings of Mexican cedar, mahogany and roble (Tabebuia) |
| title_sort | effect of substrate and density on the quality of seedlings of mexican cedar, mahogany and roble (tabebuia) |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/1169 |
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