Soil weed seed bank in situ and ex situ at a smallholder field in Maranhão State, northeastern Brazil
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| Format: | Artículo científico |
| Language: | en |
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Universidade Estadual de Maringá
2015
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| _version_ | 1876447859977486336 |
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| author | Mário Luiz Ribeiro Mesquita |
| author_facet | Mário Luiz Ribeiro Mesquita |
| contents | Soil weed seed bank in situ and ex situ at a smallholder field in Maranhão State, northeastern Brazil Mário Luiz Ribeiro Mesquita Leonaldo Alves de Andrade Walter Esfrain Pereira Agrociencias Cyperaceae competition phytosociology biological invasion smallholder farmers The objective of this research was to assess the density, floristic composition, phytosociology and diversity of a soil weed seed bank ex situ by germination in a greenhouse and in situ by weed sampling on a smallholder corn field located in Lago Verde County, Maranhão State. Fifteen pairs of 25 m2 plots were designated. In half of these plots, 90 soil samples were collected with an open metal template measuring 25 x 16 x 3 cm and placed in a greenhouse to germinate. In the other half, 90 weed samples were collected using the same metal template. We recorded a total of 1,998 individuals from 40 species, 31 genera and 16 families, from which 659 individuals germinated in situ and 1,339 ex situ. Density was higher ex situ, with 372 plants m-2. The Cyperaceae family had the highest floristic richness with nine species, followed by the Poaceae with six. The dominant species based on the Importance Value Index were Lindernia crustacea (IVI 27.7%) in situ and Scleria lithosperma (IVI 37.0%) ex situ. Floristic diversity was higher ex situ, with H’ = 2.66 nats ind-1. These results could help predict infestation potential and could lead to improved weed management strategies in corn-growing areas on smallholdings in Maranhão State, northeastern Brazil. 2015 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303033072012 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.1 Vol.37 |
| format | Artículo científico |
| id | redalyc_303033072012 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Universidade Estadual de Maringá |
| spellingShingle | Soil weed seed bank in situ and ex situ at a smallholder field in Maranhão State, northeastern Brazil Mário Luiz Ribeiro Mesquita Agrociencias Cyperaceae competition phytosociology biological invasion smallholder farmers Soil weed seed bank in situ and ex situ at a smallholder field in Maranhão State, northeastern Brazil Mário Luiz Ribeiro Mesquita Leonaldo Alves de Andrade Walter Esfrain Pereira Agrociencias Cyperaceae competition phytosociology biological invasion smallholder farmers The objective of this research was to assess the density, floristic composition, phytosociology and diversity of a soil weed seed bank ex situ by germination in a greenhouse and in situ by weed sampling on a smallholder corn field located in Lago Verde County, Maranhão State. Fifteen pairs of 25 m2 plots were designated. In half of these plots, 90 soil samples were collected with an open metal template measuring 25 x 16 x 3 cm and placed in a greenhouse to germinate. In the other half, 90 weed samples were collected using the same metal template. We recorded a total of 1,998 individuals from 40 species, 31 genera and 16 families, from which 659 individuals germinated in situ and 1,339 ex situ. Density was higher ex situ, with 372 plants m-2. The Cyperaceae family had the highest floristic richness with nine species, followed by the Poaceae with six. The dominant species based on the Importance Value Index were Lindernia crustacea (IVI 27.7%) in situ and Scleria lithosperma (IVI 37.0%) ex situ. Floristic diversity was higher ex situ, with H’ = 2.66 nats ind-1. These results could help predict infestation potential and could lead to improved weed management strategies in corn-growing areas on smallholdings in Maranhão State, northeastern Brazil. 2015 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303033072012 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.1 Vol.37 |
| title | Soil weed seed bank in situ and ex situ at a smallholder field in Maranhão State, northeastern Brazil |
| topic | Agrociencias Cyperaceae competition phytosociology biological invasion smallholder farmers |
| url | https://www.redalyc.org/articulo.oa?id=303033072012 |