Effect of Bentonite on the Early Growth Characteristics of Teak Seedlings Planted in Sandy Soil in Northeast Thailand—A Pilot Study
The growth of teak (<i>Tectona grandis</i> L. f.) seedlings in sandy soil in northeast Thailand is suppressed by infertility and drought stress. In a preliminary field pot experiment, we confirmed that bentonite was useful for increasing soil water availability. To monitor early growth c...
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MDPI AG
2020-12-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/12/1/26 |
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| author | Masazumi Kayama Suchat Nimpila Sutjaporn Hongthong Reiji Yoneda Woraphun Himmapan Iwao Noda |
| author_facet | Masazumi Kayama Suchat Nimpila Sutjaporn Hongthong Reiji Yoneda Woraphun Himmapan Iwao Noda |
| author_sort | Masazumi Kayama |
| collection | DOAJ |
| description | The growth of teak (<i>Tectona grandis</i> L. f.) seedlings in sandy soil in northeast Thailand is suppressed by infertility and drought stress. In a preliminary field pot experiment, we confirmed that bentonite was useful for increasing soil water availability. To monitor early growth characteristics of teak seedlings in sandy soil, we curried out an experiment of teak seedlings using bentonite and fertilizer in the field from July 2014 to November 2015. We then compared the growth, biomass, photosynthetic rate, leaf water potential, and concentration of elements in the plant organs among the four treatments. Bentonite increased both soil pH and Ca during the experimental period, and retained P in fertilizer. The dry mass of teak seedlings was markedly increased by concurrent use of bentonite and fertilizer. However, the use of bentonite alone showed little increase of dry mass of teak seedlings. Moreover, application of bentonite was mitigated drought stress in dry season, and photosynthetic rate showed high value by high concentration of chlorophyll. The concentration of K in root of teak seedlings was increased by application of bentonite, and its value showed positive correlation with the relative growth rate of teak seedlings. We concluded that bentonite was useful for the uptake of K and retention of P in fertilizer, as a result, growth of teak seedlings was accelerated. |
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| id | doaj.art-1f1313cf0c5342d4815c8ad9ed3d2cea |
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| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-10T13:43:19Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-1f1313cf0c5342d4815c8ad9ed3d2cea2023-11-21T02:48:51ZengMDPI AGForests1999-49072020-12-011212610.3390/f12010026Effect of Bentonite on the Early Growth Characteristics of Teak Seedlings Planted in Sandy Soil in Northeast Thailand—A Pilot StudyMasazumi Kayama0Suchat Nimpila1Sutjaporn Hongthong2Reiji Yoneda3Woraphun Himmapan4Iwao Noda5Japan International Research Center for Agricultural Sciences, 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, JapanRoyal Forest Department, 61 Phaholyothin Rd., Chatuchak, Bangkok 10900, ThailandRoyal Forest Department, 61 Phaholyothin Rd., Chatuchak, Bangkok 10900, ThailandJapan International Research Center for Agricultural Sciences, 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, JapanRoyal Forest Department, 61 Phaholyothin Rd., Chatuchak, Bangkok 10900, ThailandJapan International Research Center for Agricultural Sciences, 1-1 Ohwashi, Tsukuba, Ibaraki 305-8686, JapanThe growth of teak (<i>Tectona grandis</i> L. f.) seedlings in sandy soil in northeast Thailand is suppressed by infertility and drought stress. In a preliminary field pot experiment, we confirmed that bentonite was useful for increasing soil water availability. To monitor early growth characteristics of teak seedlings in sandy soil, we curried out an experiment of teak seedlings using bentonite and fertilizer in the field from July 2014 to November 2015. We then compared the growth, biomass, photosynthetic rate, leaf water potential, and concentration of elements in the plant organs among the four treatments. Bentonite increased both soil pH and Ca during the experimental period, and retained P in fertilizer. The dry mass of teak seedlings was markedly increased by concurrent use of bentonite and fertilizer. However, the use of bentonite alone showed little increase of dry mass of teak seedlings. Moreover, application of bentonite was mitigated drought stress in dry season, and photosynthetic rate showed high value by high concentration of chlorophyll. The concentration of K in root of teak seedlings was increased by application of bentonite, and its value showed positive correlation with the relative growth rate of teak seedlings. We concluded that bentonite was useful for the uptake of K and retention of P in fertilizer, as a result, growth of teak seedlings was accelerated.https://www.mdpi.com/1999-4907/12/1/26acrisolsarbuscular mycorrhizal fungileaf water potentialnutrientsphotosynthesis |
| spellingShingle | Masazumi Kayama Suchat Nimpila Sutjaporn Hongthong Reiji Yoneda Woraphun Himmapan Iwao Noda Effect of Bentonite on the Early Growth Characteristics of Teak Seedlings Planted in Sandy Soil in Northeast Thailand—A Pilot Study Forests acrisols arbuscular mycorrhizal fungi leaf water potential nutrients photosynthesis |
| title | Effect of Bentonite on the Early Growth Characteristics of Teak Seedlings Planted in Sandy Soil in Northeast Thailand—A Pilot Study |
| title_full | Effect of Bentonite on the Early Growth Characteristics of Teak Seedlings Planted in Sandy Soil in Northeast Thailand—A Pilot Study |
| title_fullStr | Effect of Bentonite on the Early Growth Characteristics of Teak Seedlings Planted in Sandy Soil in Northeast Thailand—A Pilot Study |
| title_full_unstemmed | Effect of Bentonite on the Early Growth Characteristics of Teak Seedlings Planted in Sandy Soil in Northeast Thailand—A Pilot Study |
| title_short | Effect of Bentonite on the Early Growth Characteristics of Teak Seedlings Planted in Sandy Soil in Northeast Thailand—A Pilot Study |
| title_sort | effect of bentonite on the early growth characteristics of teak seedlings planted in sandy soil in northeast thailand a pilot study |
| topic | acrisols arbuscular mycorrhizal fungi leaf water potential nutrients photosynthesis |
| url | https://www.mdpi.com/1999-4907/12/1/26 |
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