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Germination ecology of Chloris truncata and its implication for weed management
Chloris truncata is a significant weed in summer crops in the subtropical region of Australia. A study was conducted to evaluate the effect of environmental factors on germination and emergence of two populations of C. truncata. Overall, germination was not affected by the populations. Seeds germina...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6037353/ https://www.ncbi.nlm.nih.gov/pubmed/29985944 http://dx.doi.org/10.1371/journal.pone.0199949 |
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author | Chauhan, Bhagirath Singh Manalil, Sudheesh Florentine, Singarayer Jha, Prashant |
author_facet | Chauhan, Bhagirath Singh Manalil, Sudheesh Florentine, Singarayer Jha, Prashant |
author_sort | Chauhan, Bhagirath Singh |
collection | PubMed |
description | Chloris truncata is a significant weed in summer crops in the subtropical region of Australia. A study was conducted to evaluate the effect of environmental factors on germination and emergence of two populations of C. truncata. Overall, germination was not affected by the populations. Seeds germinated at a wide range of alternating day/night temperatures, suggesting that seeds can germinate throughout the spring, winter and autumn seasons. Seed germination was stimulated by the presence of light; however, 51 to 71% of these seeds still germinated in the dark. The sodium chloride concentration and osmotic potential required to inhibit germination of 50% of the population were 179 mM and -0.52 MPa, respectively. A high proportion of seeds germinated over a wide pH range (4 to 10). Seeds placed on the soil surface had greatest germination (67%) and a burial depth of 3 cm resulted in complete inhibition of emergence. The sorghum residue amount required to reduce emergence by 50% was 1.8 t ha(-1). The results suggest that, although this weed will be favored in no-till systems, residue retention on the soil surface will help in reducing its infestation. Seed bank buildup can be managed by burying seeds below the depth of emergence. |
format | Online Article Text |
id | pubmed-6037353 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-60373532018-07-19 Germination ecology of Chloris truncata and its implication for weed management Chauhan, Bhagirath Singh Manalil, Sudheesh Florentine, Singarayer Jha, Prashant PLoS One Research Article Chloris truncata is a significant weed in summer crops in the subtropical region of Australia. A study was conducted to evaluate the effect of environmental factors on germination and emergence of two populations of C. truncata. Overall, germination was not affected by the populations. Seeds germinated at a wide range of alternating day/night temperatures, suggesting that seeds can germinate throughout the spring, winter and autumn seasons. Seed germination was stimulated by the presence of light; however, 51 to 71% of these seeds still germinated in the dark. The sodium chloride concentration and osmotic potential required to inhibit germination of 50% of the population were 179 mM and -0.52 MPa, respectively. A high proportion of seeds germinated over a wide pH range (4 to 10). Seeds placed on the soil surface had greatest germination (67%) and a burial depth of 3 cm resulted in complete inhibition of emergence. The sorghum residue amount required to reduce emergence by 50% was 1.8 t ha(-1). The results suggest that, although this weed will be favored in no-till systems, residue retention on the soil surface will help in reducing its infestation. Seed bank buildup can be managed by burying seeds below the depth of emergence. Public Library of Science 2018-07-09 /pmc/articles/PMC6037353/ /pubmed/29985944 http://dx.doi.org/10.1371/journal.pone.0199949 Text en © 2018 Chauhan et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Chauhan, Bhagirath Singh Manalil, Sudheesh Florentine, Singarayer Jha, Prashant Germination ecology of Chloris truncata and its implication for weed management |
title | Germination ecology of Chloris truncata and its implication for weed management |
title_full | Germination ecology of Chloris truncata and its implication for weed management |
title_fullStr | Germination ecology of Chloris truncata and its implication for weed management |
title_full_unstemmed | Germination ecology of Chloris truncata and its implication for weed management |
title_short | Germination ecology of Chloris truncata and its implication for weed management |
title_sort | germination ecology of chloris truncata and its implication for weed management |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6037353/ https://www.ncbi.nlm.nih.gov/pubmed/29985944 http://dx.doi.org/10.1371/journal.pone.0199949 |
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