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Soil Physics Involvement in the Germination Ecology of Buried Weed Seeds
Trials were performed to test the germination ecology of buried weed seeds as a function of physical soil conditions such as of burial depth, texture, and compaction. Indeed, these ecological conditions, due to the adopted agronomic practices, play a crucial role in modulating the seed bank germinat...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6358791/ https://www.ncbi.nlm.nih.gov/pubmed/30597933 http://dx.doi.org/10.3390/plants8010007 |
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author | Benvenuti, Stefano Mazzoncini, Marco |
author_facet | Benvenuti, Stefano Mazzoncini, Marco |
author_sort | Benvenuti, Stefano |
collection | PubMed |
description | Trials were performed to test the germination ecology of buried weed seeds as a function of physical soil conditions such as of burial depth, texture, and compaction. Indeed, these ecological conditions, due to the adopted agronomic practices, play a crucial role in modulating the seed bank germination dynamics. Experiments were carried out in open fields in confined soils (polypropylene pipes), and in the laboratory in Petri dishes. Sowing depth strongly inhibited the seed germination of the three weed species selected. This inhibition was found to be inversely proportional to the size of the soil particles. Compaction strongly increased the depth-mediated inhibition, especially in soils that were rich in clay particles, and was inversely proportional to the seed size. The physiological nature of the dormancy imposed by burial was investigated. In addition, ungerminated seeds, re-exhumed after deep-sowing for six months, were found to be in deep dormancy, especially after burial in compacted clay soil. This dormancy induction was more pronounced in weed species characterized by small seeds. Critical issues are discussed regarding weed seed bank ecophysiology and their management in sustainable agricultural cropping systems. |
format | Online Article Text |
id | pubmed-6358791 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63587912019-02-11 Soil Physics Involvement in the Germination Ecology of Buried Weed Seeds Benvenuti, Stefano Mazzoncini, Marco Plants (Basel) Article Trials were performed to test the germination ecology of buried weed seeds as a function of physical soil conditions such as of burial depth, texture, and compaction. Indeed, these ecological conditions, due to the adopted agronomic practices, play a crucial role in modulating the seed bank germination dynamics. Experiments were carried out in open fields in confined soils (polypropylene pipes), and in the laboratory in Petri dishes. Sowing depth strongly inhibited the seed germination of the three weed species selected. This inhibition was found to be inversely proportional to the size of the soil particles. Compaction strongly increased the depth-mediated inhibition, especially in soils that were rich in clay particles, and was inversely proportional to the seed size. The physiological nature of the dormancy imposed by burial was investigated. In addition, ungerminated seeds, re-exhumed after deep-sowing for six months, were found to be in deep dormancy, especially after burial in compacted clay soil. This dormancy induction was more pronounced in weed species characterized by small seeds. Critical issues are discussed regarding weed seed bank ecophysiology and their management in sustainable agricultural cropping systems. MDPI 2018-12-29 /pmc/articles/PMC6358791/ /pubmed/30597933 http://dx.doi.org/10.3390/plants8010007 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Benvenuti, Stefano Mazzoncini, Marco Soil Physics Involvement in the Germination Ecology of Buried Weed Seeds |
title | Soil Physics Involvement in the Germination Ecology of Buried Weed Seeds |
title_full | Soil Physics Involvement in the Germination Ecology of Buried Weed Seeds |
title_fullStr | Soil Physics Involvement in the Germination Ecology of Buried Weed Seeds |
title_full_unstemmed | Soil Physics Involvement in the Germination Ecology of Buried Weed Seeds |
title_short | Soil Physics Involvement in the Germination Ecology of Buried Weed Seeds |
title_sort | soil physics involvement in the germination ecology of buried weed seeds |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6358791/ https://www.ncbi.nlm.nih.gov/pubmed/30597933 http://dx.doi.org/10.3390/plants8010007 |
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